Bit8u VESA_GetSVGAInformation(Bit16u seg,Bit16u off) {
/* Fill 256 byte buffer with VESA information */
PhysPt buffer=PhysMake(seg,off);
Bitu i;
bool vbe2=false;Bit16u vbe2_pos=256+off;
Bitu id=mem_readd(buffer);
if (((id==0x56424532)||(id==0x32454256)) && (!int10.vesa_oldvbe)) vbe2=true;
if (vbe2) {
for (i=0;i<0x200;i++) mem_writeb(buffer+i,0);
} else {
for (i=0;i<0x100;i++) mem_writeb(buffer+i,0);
}
/* Fill common data */
MEM_BlockWrite(buffer,(void *)"VESA",4); //Identification
if (!int10.vesa_oldvbe) mem_writew(buffer+0x04,0x200); //Vesa version 2.0
else mem_writew(buffer+0x04,0x102); //Vesa version 1.2
if (vbe2) {
mem_writed(buffer+0x06,RealMake(seg,vbe2_pos));
for (i=0;i<sizeof(string_oem);i++) real_writeb(seg,vbe2_pos++,string_oem[i]);
mem_writew(buffer+0x14,0x200); //VBE 2 software revision
mem_writed(buffer+0x16,RealMake(seg,vbe2_pos));
for (i=0;i<sizeof(string_vendorname);i++) real_writeb(seg,vbe2_pos++,string_vendorname[i]);
mem_writed(buffer+0x1a,RealMake(seg,vbe2_pos));
for (i=0;i<sizeof(string_productname);i++) real_writeb(seg,vbe2_pos++,string_productname[i]);
mem_writed(buffer+0x1e,RealMake(seg,vbe2_pos));
for (i=0;i<sizeof(string_productrev);i++) real_writeb(seg,vbe2_pos++,string_productrev[i]);
} else {
mem_writed(buffer+0x06,int10.rom.oemstring); //Oemstring
}
mem_writed(buffer+0x0a,0x0); //Capabilities and flags
mem_writed(buffer+0x0e,int10.rom.vesa_modes); //VESA Mode list
mem_writew(buffer+0x12,(Bit16u)(vga.vmemsize/(64*1024))); // memory size in 64kb blocks
return VESA_SUCCESS;
}
Bit8u VESA_GetSVGAInformation(Bit16u seg,Bit16u off) {
/* Fill 256 byte buffer with VESA information */
PhysPt buffer=PhysMake(seg,off);
Bitu i;
bool vbe2=false;Bit16u vbe2_pos;
Bitu id=mem_readd(buffer);
if (((id==0x56424532)||(id==0x32454256)) && (!int10.vesa_oldvbe)) vbe2=true;
if (vbe2) {
for (i=0;i<0x200;i++) mem_writeb(buffer+i,0);
} else {
for (i=0;i<0x100;i++) mem_writeb(buffer+i,0);
}
/* Fill common data */
MEM_BlockWrite(buffer,(void *)"VESA",4); //Identification
if (!int10.vesa_oldvbe) mem_writew(buffer+0x04,0x200); //Vesa version 2.0
else mem_writew(buffer+0x04,0x102); //Vesa version 1.2
if (vbe2) {
vbe2_pos=256+off;
mem_writed(buffer+0x06,RealMake(seg,vbe2_pos));
for (i=0;i<sizeof(string_oem);i++) real_writeb(seg,vbe2_pos++,(Bit8u)string_oem[i]);
mem_writew(buffer+0x14,0x200); //VBE 2 software revision
mem_writed(buffer+0x16,RealMake(seg,vbe2_pos));
for (i=0;i<sizeof(string_vendorname);i++) real_writeb(seg,vbe2_pos++,(Bit8u)string_vendorname[i]);
mem_writed(buffer+0x1a,RealMake(seg,vbe2_pos));
for (i=0;i<sizeof(string_productname);i++) real_writeb(seg,vbe2_pos++,(Bit8u)string_productname[i]);
mem_writed(buffer+0x1e,RealMake(seg,vbe2_pos));
for (i=0;i<sizeof(string_productrev);i++) real_writeb(seg,vbe2_pos++,(Bit8u)string_productrev[i]);
} else {
vbe2_pos=0x20+off;
mem_writed(buffer+0x06,int10.rom.oemstring); //Oemstring
}
if (vesa_bios_modelist_in_info) {
/* put the modelist into the VBE struct itself, as modern BIOSes like to do.
* NOTICE: This limits the modelist to what is able to fit! Extended modes may not fit, which is why the option is OFF by default. */
uint16_t modesg = int10.rom.vesa_modes >> 16;
uint16_t modoff = int10.rom.vesa_modes & 0xFFFF;
uint16_t m;
mem_writed(buffer+0x0e,RealMake(seg,vbe2_pos)); //VESA Mode list
do {
if (vbe2) {
if (vbe2_pos >= (509+off)) break;
}
else {
if (vbe2_pos >= (253+off)) break;
}
m = real_readw(modesg,modoff);
if (m == 0xFFFF) break;
real_writew(seg,vbe2_pos,m);
vbe2_pos += 2;
modoff += 2;
} while (1);
real_writew(seg,vbe2_pos,0xFFFF);
}
else {
void INT10_SetupVESA(void) {
/* Put the mode list somewhere in memory */
Bitu i;
i=0;
int10.rom.vesa_modes=RealMake(0xc000,int10.rom.used);
//TODO Maybe add normal vga modes too, but only seems to complicate things
while (ModeList_VGA[i].mode!=0xffff) {
bool canuse_mode=false;
if (!svga.accepts_mode) canuse_mode=true;
else {
if (svga.accepts_mode(ModeList_VGA[i].mode)) canuse_mode=true;
}
if (ModeList_VGA[i].mode>=0x100 && canuse_mode) {
if ((!int10.vesa_oldvbe) || (ModeList_VGA[i].mode<0x120)) {
phys_writew(PhysMake(0xc000,int10.rom.used),ModeList_VGA[i].mode);
int10.rom.used+=2;
}
}
i++;
}
phys_writew(PhysMake(0xc000,int10.rom.used),0xffff);
int10.rom.used+=2;
int10.rom.oemstring=RealMake(0xc000,int10.rom.used);
Bitu len=(Bitu)(strlen(string_oem)+1);
for (i=0;i<len;i++) {
phys_writeb(0xc0000+int10.rom.used++,string_oem[i]);
}
switch (svgaCard) {
case SVGA_S3Trio:
break;
}
callback.setwindow=CALLBACK_Allocate();
callback.pmPalette=CALLBACK_Allocate();
callback.pmStart=CALLBACK_Allocate();
CALLBACK_Setup(callback.setwindow,VESA_SetWindow,CB_RETF, "VESA Real Set Window");
/* Prepare the pmode interface */
int10.rom.pmode_interface=RealMake(0xc000,int10.rom.used);
int10.rom.used += 8; //Skip the byte later used for offsets
/* PM Set Window call */
int10.rom.pmode_interface_window = int10.rom.used - RealOff( int10.rom.pmode_interface );
phys_writew( Real2Phys(int10.rom.pmode_interface) + 0, int10.rom.pmode_interface_window );
callback.pmWindow=CALLBACK_Allocate();
int10.rom.used += (Bit16u)CALLBACK_Setup(callback.pmWindow, VESA_PMSetWindow, CB_RETN, PhysMake(0xc000,int10.rom.used), "VESA PM Set Window");
/* PM Set start call */
int10.rom.pmode_interface_start = int10.rom.used - RealOff( int10.rom.pmode_interface );
phys_writew( Real2Phys(int10.rom.pmode_interface) + 2, int10.rom.pmode_interface_start);
callback.pmStart=CALLBACK_Allocate();
int10.rom.used += (Bit16u)CALLBACK_Setup(callback.pmStart, VESA_PMSetStart, CB_RETN, PhysMake(0xc000,int10.rom.used), "VESA PM Set Start");
/* PM Set Palette call */
int10.rom.pmode_interface_palette = int10.rom.used - RealOff( int10.rom.pmode_interface );
phys_writew( Real2Phys(int10.rom.pmode_interface) + 4, int10.rom.pmode_interface_palette);
callback.pmPalette=CALLBACK_Allocate();
int10.rom.used += (Bit16u)CALLBACK_Setup(callback.pmPalette, VESA_PMSetPalette, CB_RETN, PhysMake(0xc000,int10.rom.used), "VESA PM Set Palette");
/* Finalize the size and clear the required ports pointer */
phys_writew( Real2Phys(int10.rom.pmode_interface) + 6, 0);
int10.rom.pmode_interface_size=int10.rom.used - RealOff( int10.rom.pmode_interface );
}
void DOS_PSP::MakeNew(Bit16u mem_size) {
/* get previous */
// DOS_PSP prevpsp(dos.psp());
/* Clear it first */
Bitu i;
const Bitu Bit8uSize = sizeof(Bit8u);
const Bitu Bit16uSize = sizeof(Bit16u);
const Bitu RealPtSize = sizeof(RealPt);
const Bitu CommandTailSize = sizeof(CommandTail);
const Bitu sizePSP = sizeof(sPSP);
for (i=0;i<sizePSP;i++) mem_writeb(pt+i,0);
// Set size
sSave(sPSP,next_seg,seg+mem_size);
/* far call opcode */
sSave(sPSP,far_call,0xea);
// far call to interrupt 0x21 - faked for bill & ted
// lets hope nobody really uses this address
sSave(sPSP,cpm_entry,RealMake(0xDEAD,0xFFFF));
/* Standard blocks,int 20 and int21 retf */
sSave(sPSP,exit[0],0xcd);
sSave(sPSP,exit[1],0x20);
sSave(sPSP,service[0],0xcd);
sSave(sPSP,service[1],0x21);
sSave(sPSP,service[2],0xcb);
/* psp and psp-parent */
sSave(sPSP,psp_parent,dos.psp());
sSave(sPSP,prev_psp,0xffffffff);
sSave(sPSP,dos_version,0x0005);
/* terminate 22,break 23,crititcal error 24 address stored */
SaveVectors();
/* FCBs are filled with 0 */
// ....
/* Init file pointer and max_files */
sSave(sPSP,file_table,RealMake(seg,offsetof(sPSP,files)));
sSave(sPSP,max_files,20);
for (Bit16u ct=0;ct<20;ct++) SetFileHandle(ct,0xff);
/* User Stack pointer */
// if (prevpsp.GetSegment()!=0) sSave(sPSP,stack,prevpsp.GetStack());
if (rootpsp==0) rootpsp = seg;
}
bool DOS_NewPSP(Bit16u segment, Bit16u size) {
DOS_PSP psp(segment);
psp.MakeNew(size);
Bit16u parent_psp_seg=psp.GetParent();
DOS_PSP psp_parent(parent_psp_seg);
psp.CopyFileTable(&psp_parent,false);
// copy command line as well (Kings Quest AGI -cga switch)
psp.SetCommandTail(RealMake(parent_psp_seg,0x80));
return true;
};
void INT10_SetupBasicVideoParameterTable(void) {
const unsigned char *copy = NULL;
size_t copy_sz = 0;
Bitu ofs;
switch (machine) {
case MCH_TANDY:
copy = vparams_tandy;
copy_sz = sizeof(vparams_tandy);
break;
case MCH_PCJR:
copy = vparams_pcjr;
copy_sz = sizeof(vparams_pcjr);
break;
default:
copy = vparams;
copy_sz = sizeof(vparams);
break;
}
if (BIOS_VIDEO_TABLE_LOCATION == ~0 || BIOS_VIDEO_TABLE_SIZE != (Bitu)copy_sz) {
if (rom_bios_vptable_enable) {
/* TODO: Free previous block */
BIOS_VIDEO_TABLE_SIZE = copy_sz;
if (mainline_compatible_bios_mapping)
BIOS_VIDEO_TABLE_LOCATION = RealMake(0xf000,0xf0a4);
else
BIOS_VIDEO_TABLE_LOCATION = PhysToReal416(ROMBIOS_GetMemory(copy_sz,"BIOS video table (INT 1Dh)")); /* TODO: make option */
/* NTS: Failure to allocate means BIOS_VIDEO_TABLE_LOCATION == 0 */
}
else {
BIOS_VIDEO_TABLE_LOCATION = 0;
}
}
RealSetVec(0x1d,BIOS_VIDEO_TABLE_LOCATION);
ofs = RealToPhys(BIOS_VIDEO_TABLE_LOCATION);
if (ofs != 0) {
if (copy && copy_sz <= BIOS_VIDEO_TABLE_SIZE) {
for (size_t i=0;i < copy_sz;i++)
phys_writeb(ofs+i,copy[i]);
}
else {
E_Exit("Somehow, INT 10 video param table too large");
}
}
}
bool DOS_PSP::SetNumFiles(Bit16u fileNum) {
if (fileNum>20) {
// Allocate needed paragraphs
fileNum+=2; // Add a few more files for safety
Bit16u para = (fileNum/16)+((fileNum%16)>0);
RealPt data = RealMake(DOS_GetMemory(para),0);
sSave(sPSP,file_table,data);
sSave(sPSP,max_files,fileNum);
Bit16u i;
for (i=0; i<20; i++) SetFileHandle(i,(Bit8u)sGet(sPSP,files[i]));
for (i=20; i<fileNum; i++) SetFileHandle(i,0xFF);
} else {
sSave(sPSP,max_files,fileNum);
};
return true;
}
void INT10_SetupBasicVideoParameterTable(void) {
/* video parameter table at F000:F0A4 */
RealSetVec(0x1d,RealMake(0xF000, 0xF0A4));
switch (machine) {
case MCH_TANDY:
for (Bit16u i = 0; i < sizeof(vparams_tandy); i++) {
phys_writeb(0xFF0A4+i,vparams_tandy[i]);
}
break;
case MCH_PCJR:
for (Bit16u i = 0; i < sizeof(vparams_pcjr); i++) {
phys_writeb(0xFF0A4+i,vparams_pcjr[i]);
}
break;
default:
for (Bit16u i = 0; i < sizeof(vparams); i++) {
phys_writeb(0xFF0A4+i,vparams[i]);
}
break;
}
}
static Bitu INT70_Handler(void) {
/* Acknowledge irq with cmos */
IO_Write(0x70,0xc);
IO_Read(0x71);
if (mem_readb(BIOS_WAIT_FLAG_ACTIVE)) {
Bit32u count=mem_readd(BIOS_WAIT_FLAG_COUNT);
if (count>997) {
mem_writed(BIOS_WAIT_FLAG_COUNT,count-997);
} else {
mem_writed(BIOS_WAIT_FLAG_COUNT,0);
PhysPt where=Real2Phys(mem_readd(BIOS_WAIT_FLAG_POINTER));
mem_writeb(where,mem_readb(where)|0x80);
mem_writeb(BIOS_WAIT_FLAG_ACTIVE,0);
mem_writed(BIOS_WAIT_FLAG_POINTER,RealMake(0,BIOS_WAIT_FLAG_TEMP));
IO_Write(0x70,0xb);
IO_Write(0x71,IO_Read(0x71)&~0x40);
}
}
/* Signal EOI to both pics */
IO_Write(0xa0,0x20);
IO_Write(0x20,0x20);
return 0;
}
bool DOS_Execute(char * name,PhysPt block_pt,Bit8u flags) {
EXE_Header head;Bitu i;
Bit16u fhandle;Bit16u len;Bit32u pos;
Bit16u pspseg,envseg,loadseg,memsize,readsize;
PhysPt loadaddress;RealPt relocpt;
Bitu headersize,imagesize;
DOS_ParamBlock block(block_pt);
block.LoadData();
if (flags!=LOADNGO && flags!=OVERLAY && flags!=LOAD) {
E_Exit("DOS:Not supported execute mode %d for file %s",flags,name);
}
/* Check for EXE or COM File */
bool iscom=false;
if (!DOS_OpenFile(name,OPEN_READ,&fhandle)) return false;
len=sizeof(EXE_Header);
if (!DOS_ReadFile(fhandle,(Bit8u *)&head,&len)) {
DOS_CloseFile(fhandle);
return false;
}
if (len<sizeof(EXE_Header)) {
if (len==0) {
/* Prevent executing zero byte files */
DOS_SetError(DOSERR_ACCESS_DENIED);
DOS_CloseFile(fhandle);
return false;
}
/* Otherwise must be a .com file */
iscom=true;
} else {
/* Convert the header to correct endian, i hope this works */
HostPt endian=(HostPt)&head;
for (i=0;i<sizeof(EXE_Header)/2;i++) {
*((Bit16u *)endian)=host_readw(endian);
endian+=2;
}
if ((head.signature!=MAGIC1) && (head.signature!=MAGIC2)) iscom=true;
else {
if(head.pages & ~0x07ff) /* 1 MB dos maximum address limit. Fixes TC3 IDE (kippesoep) */
LOG(LOG_EXEC,LOG_NORMAL)("Weird header: head.pages > 1 MB");
head.pages&=0x07ff;
headersize = head.headersize*16;
imagesize = head.pages*512-headersize;
if (imagesize+headersize<512) imagesize = 512-headersize;
}
}
Bit8u * loadbuf=(Bit8u *)new Bit8u[0x10000];
if (flags!=OVERLAY) {
/* Create an environment block */
envseg=block.exec.envseg;
if (!MakeEnv(name,&envseg)) {
DOS_CloseFile(fhandle);
return false;
}
/* Get Memory */
Bit16u minsize,maxsize;Bit16u maxfree=0xffff;DOS_AllocateMemory(&pspseg,&maxfree);
if (iscom) {
minsize=0x1000;maxsize=0xffff;
if (machine==MCH_PCJR) {
/* try to load file into memory below 96k */
pos=0;DOS_SeekFile(fhandle,&pos,DOS_SEEK_SET);
Bit16u dataread=0x1800;
DOS_ReadFile(fhandle,loadbuf,&dataread);
if (dataread<0x1800) maxsize=dataread;
if (minsize>maxsize) minsize=maxsize;
}
} else { /* Exe size calculated from header */
minsize=long2para(imagesize+(head.minmemory<<4)+256);
if (head.maxmemory!=0) maxsize=long2para(imagesize+(head.maxmemory<<4)+256);
else maxsize=0xffff;
}
if (maxfree<minsize) {
DOS_SetError(DOSERR_INSUFFICIENT_MEMORY);
DOS_FreeMemory(envseg);
return false;
}
if (maxfree<maxsize) memsize=maxfree;
else memsize=maxsize;
if (!DOS_AllocateMemory(&pspseg,&memsize)) E_Exit("DOS:Exec error in memory");
if (iscom && (machine==MCH_PCJR) && (pspseg<0x2000)) {
maxsize=0xffff;
/* resize to full extent of memory block */
DOS_ResizeMemory(pspseg,&maxsize);
/* now try to lock out memory above segment 0x2000 */
if ((real_readb(0x2000,0)==0x5a) && (real_readw(0x2000,1)==0) && (real_readw(0x2000,3)==0x7ffe)) {
/* MCB after PCJr graphics memory region is still free */
if (pspseg+maxsize==0x17ff) {
DOS_MCB cmcb((Bit16u)(pspseg-1));
cmcb.SetType(0x5a); // last block
}
}
}
loadseg=pspseg+16;
if (!iscom) {
/* Check if requested to load program into upper part of allocated memory */
if ((head.minmemory == 0) && (head.maxmemory == 0))
loadseg = ((pspseg+memsize)*0x10-imagesize)/0x10;
}
} else loadseg=block.overlay.loadseg;
/* Load the executable */
loadaddress=PhysMake(loadseg,0);
if (iscom) { /* COM Load 64k - 256 bytes max */
pos=0;DOS_SeekFile(fhandle,&pos,DOS_SEEK_SET);
readsize=0xffff-256;
DOS_ReadFile(fhandle,loadbuf,&readsize);
MEM_BlockWrite(loadaddress,loadbuf,readsize);
} else { /* EXE Load in 32kb blocks and then relocate */
pos=headersize;DOS_SeekFile(fhandle,&pos,DOS_SEEK_SET);
while (imagesize>0x7FFF) {
readsize=0x8000;DOS_ReadFile(fhandle,loadbuf,&readsize);
MEM_BlockWrite(loadaddress,loadbuf,readsize);
// if (readsize!=0x8000) LOG(LOG_EXEC,LOG_NORMAL)("Illegal header");
loadaddress+=0x8000;imagesize-=0x8000;
}
if (imagesize>0) {
readsize=(Bit16u)imagesize;DOS_ReadFile(fhandle,loadbuf,&readsize);
MEM_BlockWrite(loadaddress,loadbuf,readsize);
// if (readsize!=imagesize) LOG(LOG_EXEC,LOG_NORMAL)("Illegal header");
}
/* Relocate the exe image */
Bit16u relocate;
if (flags==OVERLAY) relocate=block.overlay.relocation;
else relocate=loadseg;
pos=head.reloctable;DOS_SeekFile(fhandle,&pos,0);
for (i=0;i<head.relocations;i++) {
readsize=4;DOS_ReadFile(fhandle,(Bit8u *)&relocpt,&readsize);
relocpt=host_readd((HostPt)&relocpt); //Endianize
PhysPt address=PhysMake(RealSeg(relocpt)+loadseg,RealOff(relocpt));
mem_writew(address,mem_readw(address)+relocate);
}
}
delete[] loadbuf;
DOS_CloseFile(fhandle);
/* Setup a psp */
if (flags!=OVERLAY) {
// Create psp after closing exe, to avoid dead file handle of exe in copied psp
SetupPSP(pspseg,memsize,envseg);
SetupCMDLine(pspseg,block);
};
CALLBACK_SCF(false); /* Carry flag cleared for caller if successfull */
if (flags==OVERLAY) return true; /* Everything done for overlays */
RealPt csip,sssp;
if (iscom) {
csip=RealMake(pspseg,0x100);
sssp=RealMake(pspseg,0xfffe);
mem_writew(PhysMake(pspseg,0xfffe),0);
} else {
csip=RealMake(loadseg+head.initCS,head.initIP);
sssp=RealMake(loadseg+head.initSS,head.initSP);
}
if (flags==LOAD) {
DOS_PSP callpsp(dos.psp());
/* Save the SS:SP on the PSP of calling program */
callpsp.SetStack(RealMakeSeg(ss,reg_sp));
/* Switch the psp's */
dos.psp(pspseg);
DOS_PSP newpsp(dos.psp());
dos.dta(RealMake(newpsp.GetSegment(),0x80));
block.exec.initsssp = sssp;
block.exec.initcsip = csip;
block.SaveData();
return true;
}
if (flags==LOADNGO) {
/* Get Caller's program CS:IP of the stack and set termination address to that */
RealSetVec(0x22,RealMake(mem_readw(SegPhys(ss)+reg_sp+2),mem_readw(SegPhys(ss)+reg_sp)));
SaveRegisters();
DOS_PSP callpsp(dos.psp());
/* Save the SS:SP on the PSP of calling program */
callpsp.SetStack(RealMakeSeg(ss,reg_sp));
/* Switch the psp's and set new DTA */
dos.psp(pspseg);
DOS_PSP newpsp(dos.psp());
dos.dta(RealMake(newpsp.GetSegment(),0x80));
/* save vectors */
newpsp.SaveVectors();
/* copy fcbs */
newpsp.SetFCB1(block.exec.fcb1);
newpsp.SetFCB2(block.exec.fcb2);
/* Set the stack for new program */
SegSet16(ss,RealSeg(sssp));reg_sp=RealOff(sssp);
/* Add some flags and CS:IP on the stack for the IRET */
reg_sp-=6;
mem_writew(SegPhys(ss)+reg_sp+0,RealOff(csip));
mem_writew(SegPhys(ss)+reg_sp+2,RealSeg(csip));
/* DOS starts programs with a RETF, so our IRET
should not modify critical flags (IOPL in v86 mode);
interrupt flag is set explicitly, test flags cleared */
mem_writew(SegPhys(ss)+reg_sp+4,(reg_flags&(~FMASK_TEST))|FLAG_IF);
/* Setup the rest of the registers */
reg_ax=reg_bx=0;reg_cx=0xff;
reg_dx=pspseg;
reg_si=RealOff(csip);
reg_di=RealOff(sssp);
reg_bp=0x91c; /* DOS internal stack begin relict */
SegSet16(ds,pspseg);SegSet16(es,pspseg);
#if C_DEBUG
/* Started from debug.com, then set breakpoint at start */
DEBUG_CheckExecuteBreakpoint(RealSeg(csip),RealOff(csip));
#endif
/* Add the filename to PSP and environment MCB's */
char stripname[8];Bitu index=0;
while (char chr=*name++) {
switch (chr) {
case ':':case '\\':case '/':index=0;break;
default:if (index<8) stripname[index++]=toupper(chr);
}
}
index=0;
while (index<8) {
if (stripname[index]=='.') break;
if (!stripname[index]) break;
index++;
}
memset(&stripname[index],0,8-index);
DOS_MCB pspmcb(dos.psp()-1);
pspmcb.SetFileName(stripname);
DOS_UpdatePSPName();
return true;
}
return false;
}
void DOS_PSP::MakeNew(Bit16u mem_size) {
/* get previous */
// DOS_PSP prevpsp(dos.psp());
/* Clear it first */
Bit16u i;
for (i=0;i<sizeof(sPSP);i++) mem_writeb(pt+i,0);
// Set size
sSave(sPSP,next_seg,(unsigned int)seg+mem_size);
/* cpm_entry is an alias for the int 30 vector (0:c0 = c:0); the offset is also the maximum program size */
if (cpm_compat_mode == CPM_COMPAT_MSDOS2) { /* MS-DOS 2.x behavior, where offset is the memory size (for some reason) */
/* far call opcode */
sSave(sPSP,far_call,0x9a);
/* and where to call to */
if (mem_size>CPM_MAX_SEG_SIZE) mem_size=CPM_MAX_SEG_SIZE;
mem_size-=0x10;
sSave(sPSP,cpm_entry,RealMake(0xc-mem_size,mem_size<<4));
}
else if (cpm_compat_mode == CPM_COMPAT_MSDOS5) { /* MS-DOS 5.x behavior, for whatever reason */
/* far call opcode */
sSave(sPSP,far_call,0x9a);
/* and where to call to.
* if 64KB or more, call far to F01D:FEF0.
* else, call far to 0000:00C0.
* don't ask me why MS-DOS 5.0 does this, ask Microsoft. */
if (mem_size >= CPM_MAX_SEG_SIZE)
sSave(sPSP,cpm_entry,RealMake(0xF01D,0xFEF0));
else
sSave(sPSP,cpm_entry,RealMake(0x0000,0x00C0));
}
else if (cpm_compat_mode == CPM_COMPAT_DIRECT) {
/* direct and to the point, though impossible to hook INT 21h without patching all PSP segments
* which is probably why Microsoft never did this in the DOS kernel. Choosing this method
* removes the need for the copy of INT 30h in the HMA area, and therefore opens up all 64KB of
* HMA if you want. */
Bit32u DOS_Get_CPM_entry_direct(void);
/* far call opcode */
sSave(sPSP,far_call,0x9a);
/* and where to call to */
sSave(sPSP,cpm_entry,DOS_Get_CPM_entry_direct());
}
else { /* off */
/* stick an INT 20h in there to make calling the CP/M entry point an immediate exit */
/* this is NOT default, but an option for users who are absolutely certain no CP/M code is going to run in their DOS box. */
sSave(sPSP,far_call,0xCD); // INT 20h + NOP NOP NOP
sSave(sPSP,cpm_entry,0x90909020);
}
/* Standard blocks,int 20 and int21 retf */
sSave(sPSP,exit[0],0xcd);
sSave(sPSP,exit[1],0x20);
sSave(sPSP,service[0],0xcd);
sSave(sPSP,service[1],0x21);
sSave(sPSP,service[2],0xcb);
/* psp and psp-parent */
sSave(sPSP,psp_parent,dos.psp());
sSave(sPSP,prev_psp,0xffffffff);
sSave(sPSP,dos_version,0x0005);
/* terminate 22,break 23,crititcal error 24 address stored */
SaveVectors();
/* FCBs are filled with 0 */
// ....
/* Init file pointer and max_files */
sSave(sPSP,file_table,RealMake(seg,offsetof(sPSP,files)));
sSave(sPSP,max_files,20);
for (Bit16u ct=0;ct<20;ct++) SetFileHandle(ct,0xff);
/* User Stack pointer */
// if (prevpsp.GetSegment()!=0) sSave(sPSP,stack,prevpsp.GetStack());
if (rootpsp==0) rootpsp = seg;
}
void SHELL_Init() {
/* Add messages */
MSG_Add("SHELL_ILLEGAL_PATH","Illegal Path.\n");
MSG_Add("SHELL_CMD_HELP","If you want a list of all supported commands type \033[33;1mhelp /all\033[0m .\nA short list of the most often used commands:\n");
MSG_Add("SHELL_CMD_ECHO_ON","ECHO is on.\n");
MSG_Add("SHELL_CMD_ECHO_OFF","ECHO is off.\n");
MSG_Add("SHELL_ILLEGAL_SWITCH","Illegal switch: %s.\n");
MSG_Add("SHELL_MISSING_PARAMETER","Required parameter missing.\n");
MSG_Add("SHELL_CMD_CHDIR_ERROR","Unable to change to: %s.\n");
MSG_Add("SHELL_CMD_CHDIR_HINT","To change to different drive type \033[31m%c:\033[0m\n");
MSG_Add("SHELL_CMD_CHDIR_HINT_2","directoryname is longer than 8 characters and/or contains spaces.\nTry \033[31mcd %s\033[0m\n");
MSG_Add("SHELL_CMD_CHDIR_HINT_3","You are still on drive Z:, change to a mounted drive with \033[31mC:\033[0m.\n");
MSG_Add("SHELL_CMD_MKDIR_ERROR","Unable to make: %s.\n");
MSG_Add("SHELL_CMD_RMDIR_ERROR","Unable to remove: %s.\n");
MSG_Add("SHELL_CMD_DEL_ERROR","Unable to delete: %s.\n");
MSG_Add("SHELL_SYNTAXERROR","The syntax of the command is incorrect.\n");
MSG_Add("SHELL_CMD_SET_NOT_SET","Environment variable %s not defined.\n");
MSG_Add("SHELL_CMD_SET_OUT_OF_SPACE","Not enough environment space left.\n");
MSG_Add("SHELL_CMD_IF_EXIST_MISSING_FILENAME","IF EXIST: Missing filename.\n");
MSG_Add("SHELL_CMD_IF_ERRORLEVEL_MISSING_NUMBER","IF ERRORLEVEL: Missing number.\n");
MSG_Add("SHELL_CMD_IF_ERRORLEVEL_INVALID_NUMBER","IF ERRORLEVEL: Invalid number.\n");
MSG_Add("SHELL_CMD_GOTO_MISSING_LABEL","No label supplied to GOTO command.\n");
MSG_Add("SHELL_CMD_GOTO_LABEL_NOT_FOUND","GOTO: Label %s not found.\n");
MSG_Add("SHELL_CMD_FILE_NOT_FOUND","File %s not found.\n");
MSG_Add("SHELL_CMD_FILE_EXISTS","File %s already exists.\n");
MSG_Add("SHELL_CMD_DIR_INTRO","Directory of %s.\n");
MSG_Add("SHELL_CMD_DIR_BYTES_USED","%5d File(s) %17s Bytes.\n");
MSG_Add("SHELL_CMD_DIR_BYTES_FREE","%5d Dir(s) %17s Bytes free.\n");
MSG_Add("SHELL_EXECUTE_DRIVE_NOT_FOUND","Drive %c does not exist!\nYou must \033[31mmount\033[0m it first. Type \033[1;33mintro\033[0m or \033[1;33mintro mount\033[0m for more information.\n");
MSG_Add("SHELL_EXECUTE_ILLEGAL_COMMAND","Illegal command: %s.\n");
MSG_Add("SHELL_CMD_PAUSE","Press any key to continue.\n");
MSG_Add("SHELL_CMD_PAUSE_HELP","Waits for 1 keystroke to continue.\n");
MSG_Add("SHELL_CMD_COPY_FAILURE","Copy failure : %s.\n");
MSG_Add("SHELL_CMD_COPY_SUCCESS"," %d File(s) copied.\n");
MSG_Add("SHELL_CMD_SUBST_NO_REMOVE","Removing drive not supported. Doing nothing.\n");
MSG_Add("SHELL_CMD_SUBST_FAILURE","SUBST failed. You either made an error in your commandline or the target drive is already used.\nIt's only possible to use SUBST on Local drives");
MSG_Add("SHELL_STARTUP_BEGIN",
"\033[44;1m\xC9\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
"\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
"\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xBB\n"
"\xBA \033[32mWelcome to DOSBox v%-8s\033[37m \xBA\n"
"\xBA \xBA\n"
// "\xBA DOSBox runs real and protected mode games. \xBA\n"
"\xBA For a short introduction for new users type: \033[33mINTRO\033[37m \xBA\n"
"\xBA For supported shell commands type: \033[33mHELP\033[37m \xBA\n"
"\xBA \xBA\n"
"\xBA To adjust the emulated CPU speed, use \033[31mctrl-F11\033[37m and \033[31mctrl-F12\033[37m. \xBA\n"
"\xBA To activate the keymapper \033[31mctrl-F1\033[37m. \xBA\n"
"\xBA For more information read the \033[36mREADME\033[37m file in the DOSBox directory. \xBA\n"
"\xBA \xBA\n"
);
MSG_Add("SHELL_STARTUP_CGA","\xBA DOSBox supports Composite CGA mode. \xBA\n"
"\xBA Use \033[31m(alt-)F11\033[37m to change the colours when in this mode. \xBA\n"
"\xBA \xBA\n"
);
MSG_Add("SHELL_STARTUP_HERC","\xBA Use \033[31mF11\033[37m to cycle through white, amber, and green monochrome color. \xBA\n"
"\xBA \xBA\n"
);
MSG_Add("SHELL_STARTUP_DEBUG",
"\xBA Press \033[31malt-Pause\033[37m to enter the debugger or start the exe with \033[33mDEBUG\033[37m. \xBA\n"
"\xBA \xBA\n"
);
MSG_Add("SHELL_STARTUP_END",
"\xBA \033[32mHAVE FUN!\033[37m \xBA\n"
"\xBA \033[32mThe DOSBox Team \033[33mhttp://www.dosbox.com\033[37m \xBA\n"
"\xC8\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
"\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD"
"\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xCD\xBC\033[0m\n"
//"\n" //Breaks the startup message if you type a mount and a drive change.
);
MSG_Add("SHELL_CMD_CHDIR_HELP","Displays/changes the current directory.\n");
MSG_Add("SHELL_CMD_CHDIR_HELP_LONG","CHDIR [drive:][path]\n"
"CHDIR [..]\n"
"CD [drive:][path]\n"
"CD [..]\n\n"
" .. Specifies that you want to change to the parent directory.\n\n"
"Type CD drive: to display the current directory in the specified drive.\n"
"Type CD without parameters to display the current drive and directory.\n");
MSG_Add("SHELL_CMD_CLS_HELP","Clear screen.\n");
MSG_Add("SHELL_CMD_DIR_HELP","Directory View.\n");
MSG_Add("SHELL_CMD_ECHO_HELP","Display messages and enable/disable command echoing.\n");
MSG_Add("SHELL_CMD_EXIT_HELP","Exit from the shell.\n");
MSG_Add("SHELL_CMD_HELP_HELP","Show help.\n");
MSG_Add("SHELL_CMD_MKDIR_HELP","Make Directory.\n");
MSG_Add("SHELL_CMD_MKDIR_HELP_LONG","MKDIR [drive:][path]\n"
"MD [drive:][path]\n");
MSG_Add("SHELL_CMD_RMDIR_HELP","Remove Directory.\n");
MSG_Add("SHELL_CMD_RMDIR_HELP_LONG","RMDIR [drive:][path]\n"
"RD [drive:][path]\n");
MSG_Add("SHELL_CMD_SET_HELP","Change environment variables.\n");
MSG_Add("SHELL_CMD_IF_HELP","Performs conditional processing in batch programs.\n");
MSG_Add("SHELL_CMD_GOTO_HELP","Jump to a labeled line in a batch script.\n");
MSG_Add("SHELL_CMD_SHIFT_HELP","Leftshift commandline parameters in a batch script.\n");
MSG_Add("SHELL_CMD_TYPE_HELP","Display the contents of a text-file.\n");
MSG_Add("SHELL_CMD_TYPE_HELP_LONG","TYPE [drive:][path][filename]\n");
MSG_Add("SHELL_CMD_REM_HELP","Add comments in a batch file.\n");
MSG_Add("SHELL_CMD_REM_HELP_LONG","REM [comment]\n");
MSG_Add("SHELL_CMD_NO_WILD","This is a simple version of the command, no wildcards allowed!\n");
MSG_Add("SHELL_CMD_RENAME_HELP","Renames one or more files.\n");
MSG_Add("SHELL_CMD_RENAME_HELP_LONG","RENAME [drive:][path]filename1 filename2.\n"
"REN [drive:][path]filename1 filename2.\n\n"
"Note that you can not specify a new drive or path for your destination file.\n");
MSG_Add("SHELL_CMD_DELETE_HELP","Removes one or more files.\n");
MSG_Add("SHELL_CMD_COPY_HELP","Copy files.\n");
MSG_Add("SHELL_CMD_CALL_HELP","Start a batch file from within another batch file.\n");
MSG_Add("SHELL_CMD_SUBST_HELP","Assign an internal directory to a drive.\n");
MSG_Add("SHELL_CMD_LOADHIGH_HELP","Loads a program into upper memory (requires xms=true,umb=true).\n");
MSG_Add("SHELL_CMD_CHOICE_HELP","Waits for a keypress and sets ERRORLEVEL.\n");
MSG_Add("SHELL_CMD_CHOICE_HELP_LONG","CHOICE [/C:choices] [/N] [/S] text\n"
" /C[:]choices - Specifies allowable keys. Default is: yn.\n"
" /N - Do not display the choices at end of prompt.\n"
" /S - Enables case-sensitive choices to be selected.\n"
" text - The text to display as a prompt.\n");
MSG_Add("SHELL_CMD_ATTRIB_HELP","Does nothing. Provided for compatibility.\n");
MSG_Add("SHELL_CMD_PATH_HELP","Provided for compatibility.\n");
MSG_Add("SHELL_CMD_VER_HELP","View and set the reported DOS version.\n");
MSG_Add("SHELL_CMD_VER_VER","DOSBox version %s. Reported DOS version %d.%02d.\n");
#ifdef IPHONEOS
MSG_Add("SHELL_CMD_UNZIP_HELP","Extract zip file to current directory.\n");
#endif
/* Regular startup */
call_shellstop=CALLBACK_Allocate();
/* Setup the startup CS:IP to kill the last running machine when exitted */
RealPt newcsip=CALLBACK_RealPointer(call_shellstop);
SegSet16(cs,RealSeg(newcsip));
reg_ip=RealOff(newcsip);
CALLBACK_Setup(call_shellstop,shellstop_handler,CB_IRET,"shell stop");
PROGRAMS_MakeFile("COMMAND.COM",SHELL_ProgramStart);
/* Now call up the shell for the first time */
Bit16u psp_seg=DOS_FIRST_SHELL;
Bit16u env_seg=DOS_FIRST_SHELL+19; //DOS_GetMemory(1+(4096/16))+1;
Bit16u stack_seg=DOS_GetMemory(2048/16);
SegSet16(ss,stack_seg);
reg_sp=2046;
/* Set up int 24 and psp (Telarium games) */
real_writeb(psp_seg+16+1,0,0xea); /* far jmp */
real_writed(psp_seg+16+1,1,real_readd(0,0x24*4));
real_writed(0,0x24*4,((Bit32u)psp_seg<<16) | ((16+1)<<4));
/* Set up int 23 to "int 20" in the psp. Fixes what.exe */
real_writed(0,0x23*4,((Bit32u)psp_seg<<16));
/* Setup MCBs */
DOS_MCB pspmcb((Bit16u)(psp_seg-1));
pspmcb.SetPSPSeg(psp_seg); // MCB of the command shell psp
pspmcb.SetSize(0x10+2);
pspmcb.SetType(0x4d);
DOS_MCB envmcb((Bit16u)(env_seg-1));
envmcb.SetPSPSeg(psp_seg); // MCB of the command shell environment
envmcb.SetSize(DOS_MEM_START-env_seg);
envmcb.SetType(0x4d);
/* Setup environment */
PhysPt env_write=PhysMake(env_seg,0);
MEM_BlockWrite(env_write,path_string,(Bitu)(strlen(path_string)+1));
env_write += (PhysPt)(strlen(path_string)+1);
MEM_BlockWrite(env_write,comspec_string,(Bitu)(strlen(comspec_string)+1));
env_write += (PhysPt)(strlen(comspec_string)+1);
mem_writeb(env_write++,0);
mem_writew(env_write,1);
env_write+=2;
MEM_BlockWrite(env_write,full_name,(Bitu)(strlen(full_name)+1));
DOS_PSP psp(psp_seg);
psp.MakeNew(0);
dos.psp(psp_seg);
/* The start of the filetable in the psp must look like this:
* 01 01 01 00 02
* In order to achieve this: First open 2 files. Close the first and
* duplicate the second (so the entries get 01) */
Bit16u dummy=0;
DOS_OpenFile("CON",OPEN_READWRITE,&dummy); /* STDIN */
DOS_OpenFile("CON",OPEN_READWRITE,&dummy); /* STDOUT */
DOS_CloseFile(0); /* Close STDIN */
DOS_ForceDuplicateEntry(1,0); /* "new" STDIN */
DOS_ForceDuplicateEntry(1,2); /* STDERR */
DOS_OpenFile("CON",OPEN_READWRITE,&dummy); /* STDAUX */
DOS_OpenFile("CON",OPEN_READWRITE,&dummy); /* STDPRN */
psp.SetParent(psp_seg);
/* Set the environment */
psp.SetEnvironment(env_seg);
/* Set the command line for the shell start up */
CommandTail tail;
tail.count=(Bit8u)strlen(init_line);
strcpy(tail.buffer,init_line);
MEM_BlockWrite(PhysMake(psp_seg,128),&tail,128);
/* Setup internal DOS Variables */
dos.dta(RealMake(psp_seg,0x80));
dos.psp(psp_seg);
SHELL_ProgramStart(&first_shell);
first_shell->Run();
delete first_shell;
first_shell = 0;//Make clear that it shouldn't be used anymore
}
static Bitu DOS_21Handler(void) {
if (((reg_ah != 0x50) && (reg_ah != 0x51) && (reg_ah != 0x62) && (reg_ah != 0x64)) && (reg_ah<0x6c)) {
DOS_PSP psp(dos.psp());
psp.SetStack(RealMake(SegValue(ss),reg_sp-18));
}
char name1[DOSNAMEBUF+2+DOS_NAMELENGTH_ASCII];
char name2[DOSNAMEBUF+2+DOS_NAMELENGTH_ASCII];
static Bitu time_start = 0; //For emulating temporary time changes.
switch (reg_ah) {
case 0x00: /* Terminate Program */
DOS_Terminate(mem_readw(SegPhys(ss)+reg_sp+2),false,0);
break;
case 0x01: /* Read character from STDIN, with echo */
{
Bit8u c;Bit16u n=1;
dos.echo=true;
DOS_ReadFile(STDIN,&c,&n);
reg_al=c;
dos.echo=false;
}
break;
case 0x02: /* Write character to STDOUT */
{
Bit8u c=reg_dl;Bit16u n=1;
DOS_WriteFile(STDOUT,&c,&n);
//Not in the official specs, but happens nonetheless. (last written character)
reg_al = c;// reg_al=(c==9)?0x20:c; //Officially: tab to spaces
}
break;
case 0x03: /* Read character from STDAUX */
{
Bit16u port = real_readw(0x40,0);
if(port!=0 && serialports[0]) {
Bit8u status;
// RTS/DTR on
IO_WriteB(port+4,0x3);
serialports[0]->Getchar(®_al, &status, true, 0xFFFFFFFF);
}
}
break;
case 0x04: /* Write Character to STDAUX */
{
Bit16u port = real_readw(0x40,0);
if(port!=0 && serialports[0]) {
// RTS/DTR on
IO_WriteB(port+4,0x3);
serialports[0]->Putchar(reg_dl,true,true, 0xFFFFFFFF);
// RTS off
IO_WriteB(port+4,0x1);
}
}
break;
case 0x05: /* Write Character to PRINTER */
E_Exit("DOS:Unhandled call %02X",reg_ah);
break;
case 0x06: /* Direct Console Output / Input */
switch (reg_dl) {
case 0xFF: /* Input */
{
//Simulate DOS overhead for timing sensitive games
//MM1
overhead();
//TODO Make this better according to standards
if (!DOS_GetSTDINStatus()) {
reg_al=0;
CALLBACK_SZF(true);
break;
}
Bit8u c;Bit16u n=1;
DOS_ReadFile(STDIN,&c,&n);
reg_al=c;
CALLBACK_SZF(false);
break;
}
default:
{
Bit8u c = reg_dl;Bit16u n = 1;
DOS_WriteFile(STDOUT,&c,&n);
reg_al = reg_dl;
}
break;
};
break;
case 0x07: /* Character Input, without echo */
{
Bit8u c;Bit16u n=1;
DOS_ReadFile (STDIN,&c,&n);
reg_al=c;
break;
};
case 0x08: /* Direct Character Input, without echo (checks for breaks officially :)*/
{
Bit8u c;Bit16u n=1;
DOS_ReadFile (STDIN,&c,&n);
reg_al=c;
break;
};
case 0x09: /* Write string to STDOUT */
{
Bit8u c;Bit16u n=1;
PhysPt buf=SegPhys(ds)+reg_dx;
while ((c=mem_readb(buf++))!='$') {
DOS_WriteFile(STDOUT,&c,&n);
}
}
break;
case 0x0a: /* Buffered Input */
{
//TODO ADD Break checkin in STDIN but can't care that much for it
PhysPt data=SegPhys(ds)+reg_dx;
Bit8u free=mem_readb(data);
Bit8u read=0;Bit8u c;Bit16u n=1;
if (!free) break;
free--;
for(;;) {
DOS_ReadFile(STDIN,&c,&n);
if (c == 8) { // Backspace
if (read) { //Something to backspace.
// STDOUT treats backspace as non-destructive.
DOS_WriteFile(STDOUT,&c,&n);
c = ' '; DOS_WriteFile(STDOUT,&c,&n);
c = 8; DOS_WriteFile(STDOUT,&c,&n);
--read;
}
continue;
}
if (read == free && c != 13) { // Keyboard buffer full
Bit8u bell = 7;
DOS_WriteFile(STDOUT, &bell, &n);
continue;
}
DOS_WriteFile(STDOUT,&c,&n);
mem_writeb(data+read+2,c);
if (c==13)
break;
read++;
};
mem_writeb(data+1,read);
break;
};
case 0x0b: /* Get STDIN Status */
if (!DOS_GetSTDINStatus()) {reg_al=0x00;}
else {reg_al=0xFF;}
//Simulate some overhead for timing issues
//Tankwar menu (needs maybe even more)
overhead();
break;
case 0x0c: /* Flush Buffer and read STDIN call */
{
/* flush buffer if STDIN is CON */
Bit8u handle=RealHandle(STDIN);
if (handle!=0xFF && Files[handle] && Files[handle]->IsName("CON")) {
Bit8u c;Bit16u n;
while (DOS_GetSTDINStatus()) {
n=1; DOS_ReadFile(STDIN,&c,&n);
}
}
switch (reg_al) {
case 0x1:
case 0x6:
case 0x7:
case 0x8:
case 0xa:
{
Bit8u oldah=reg_ah;
reg_ah=reg_al;
DOS_21Handler();
reg_ah=oldah;
}
break;
default:
// LOG_ERROR("DOS:0C:Illegal Flush STDIN Buffer call %d",reg_al);
reg_al=0;
break;
}
}
break;
//TODO Find out the values for when reg_al!=0
//TODO Hope this doesn't do anything special
case 0x0d: /* Disk Reset */
//Sure let's reset a virtual disk
break;
case 0x0e: /* Select Default Drive */
DOS_SetDefaultDrive(reg_dl);
reg_al=DOS_DRIVES;
break;
case 0x0f: /* Open File using FCB */
if(DOS_FCBOpen(SegValue(ds),reg_dx)){
reg_al=0;
}else{
reg_al=0xff;
}
LOG(LOG_FCB,LOG_NORMAL)("DOS:0x0f FCB-fileopen used, result:al=%d",reg_al);
break;
case 0x10: /* Close File using FCB */
if(DOS_FCBClose(SegValue(ds),reg_dx)){
reg_al=0;
}else{
reg_al=0xff;
}
LOG(LOG_FCB,LOG_NORMAL)("DOS:0x10 FCB-fileclose used, result:al=%d",reg_al);
break;
case 0x11: /* Find First Matching File using FCB */
if(DOS_FCBFindFirst(SegValue(ds),reg_dx)) reg_al = 0x00;
else reg_al = 0xFF;
LOG(LOG_FCB,LOG_NORMAL)("DOS:0x11 FCB-FindFirst used, result:al=%d",reg_al);
break;
case 0x12: /* Find Next Matching File using FCB */
if(DOS_FCBFindNext(SegValue(ds),reg_dx)) reg_al = 0x00;
else reg_al = 0xFF;
LOG(LOG_FCB,LOG_NORMAL)("DOS:0x12 FCB-FindNext used, result:al=%d",reg_al);
break;
case 0x13: /* Delete File using FCB */
if (DOS_FCBDeleteFile(SegValue(ds),reg_dx)) reg_al = 0x00;
else reg_al = 0xFF;
LOG(LOG_FCB,LOG_NORMAL)("DOS:0x16 FCB-Delete used, result:al=%d",reg_al);
break;
case 0x14: /* Sequential read from FCB */
reg_al = DOS_FCBRead(SegValue(ds),reg_dx,0);
LOG(LOG_FCB,LOG_NORMAL)("DOS:0x14 FCB-Read used, result:al=%d",reg_al);
break;
case 0x15: /* Sequential write to FCB */
reg_al=DOS_FCBWrite(SegValue(ds),reg_dx,0);
LOG(LOG_FCB,LOG_NORMAL)("DOS:0x15 FCB-Write used, result:al=%d",reg_al);
break;
case 0x16: /* Create or truncate file using FCB */
if (DOS_FCBCreate(SegValue(ds),reg_dx)) reg_al = 0x00;
else reg_al = 0xFF;
LOG(LOG_FCB,LOG_NORMAL)("DOS:0x16 FCB-Create used, result:al=%d",reg_al);
break;
case 0x17: /* Rename file using FCB */
if (DOS_FCBRenameFile(SegValue(ds),reg_dx)) reg_al = 0x00;
else reg_al = 0xFF;
break;
case 0x1b: /* Get allocation info for default drive */
if (!DOS_GetAllocationInfo(0,®_cx,®_al,®_dx)) reg_al=0xff;
break;
case 0x1c: /* Get allocation info for specific drive */
if (!DOS_GetAllocationInfo(reg_dl,®_cx,®_al,®_dx)) reg_al=0xff;
break;
case 0x21: /* Read random record from FCB */
{
Bit16u toread=1;
reg_al = DOS_FCBRandomRead(SegValue(ds),reg_dx,&toread,true);
}
LOG(LOG_FCB,LOG_NORMAL)("DOS:0x21 FCB-Random read used, result:al=%d",reg_al);
break;
case 0x22: /* Write random record to FCB */
{
Bit16u towrite=1;
reg_al=DOS_FCBRandomWrite(SegValue(ds),reg_dx,&towrite,true);
}
LOG(LOG_FCB,LOG_NORMAL)("DOS:0x22 FCB-Random write used, result:al=%d",reg_al);
break;
case 0x23: /* Get file size for FCB */
if (DOS_FCBGetFileSize(SegValue(ds),reg_dx)) reg_al = 0x00;
else reg_al = 0xFF;
break;
case 0x24: /* Set Random Record number for FCB */
DOS_FCBSetRandomRecord(SegValue(ds),reg_dx);
break;
case 0x27: /* Random block read from FCB */
reg_al = DOS_FCBRandomRead(SegValue(ds),reg_dx,®_cx,false);
LOG(LOG_FCB,LOG_NORMAL)("DOS:0x27 FCB-Random(block) read used, result:al=%d",reg_al);
break;
case 0x28: /* Random Block write to FCB */
reg_al=DOS_FCBRandomWrite(SegValue(ds),reg_dx,®_cx,false);
LOG(LOG_FCB,LOG_NORMAL)("DOS:0x28 FCB-Random(block) write used, result:al=%d",reg_al);
break;
case 0x29: /* Parse filename into FCB */
{
Bit8u difference;
char string[1024];
MEM_StrCopy(SegPhys(ds)+reg_si,string,1023); // 1024 toasts the stack
reg_al=FCB_Parsename(SegValue(es),reg_di,reg_al ,string, &difference);
reg_si+=difference;
}
LOG(LOG_FCB,LOG_NORMAL)("DOS:29:FCB Parse Filename, result:al=%d",reg_al);
break;
case 0x19: /* Get current default drive */
reg_al=DOS_GetDefaultDrive();
break;
case 0x1a: /* Set Disk Transfer Area Address */
dos.dta(RealMakeSeg(ds,reg_dx));
break;
case 0x25: /* Set Interrupt Vector */
RealSetVec(reg_al,RealMakeSeg(ds,reg_dx));
break;
case 0x26: /* Create new PSP */
DOS_NewPSP(reg_dx,DOS_PSP(dos.psp()).GetSize());
reg_al=0xf0; /* al destroyed */
break;
case 0x2a: /* Get System Date */
{
reg_ax=0; // get time
CALLBACK_RunRealInt(0x1a);
if(reg_al) DOS_AddDays(reg_al);
int a = (14 - dos.date.month)/12;
int y = dos.date.year - a;
int m = dos.date.month + 12*a - 2;
reg_al=(dos.date.day+y+(y/4)-(y/100)+(y/400)+(31*m)/12) % 7;
reg_cx=dos.date.year;
reg_dh=dos.date.month;
reg_dl=dos.date.day;
}
break;
case 0x2b: /* Set System Date */
if (reg_cx<1980) { reg_al=0xff;break;}
if ((reg_dh>12) || (reg_dh==0)) { reg_al=0xff;break;}
if (reg_dl==0) { reg_al=0xff;break;}
if (reg_dl>DOS_DATE_months[reg_dh]) {
if(!((reg_dh==2)&&(reg_cx%4 == 0)&&(reg_dl==29))) // february pass
{ reg_al=0xff;break; }
}
dos.date.year=reg_cx;
dos.date.month=reg_dh;
dos.date.day=reg_dl;
reg_al=0;
break;
case 0x2c: { /* Get System Time */
reg_ax=0; // get time
CALLBACK_RunRealInt(0x1a);
if(reg_al) DOS_AddDays(reg_al);
reg_ah=0x2c;
Bitu ticks=((Bitu)reg_cx<<16)|reg_dx;
if(time_start<=ticks) ticks-=time_start;
Bitu time=(Bitu)((100.0/((double)PIT_TICK_RATE/65536.0)) * (double)ticks);
reg_dl=(Bit8u)((Bitu)time % 100); // 1/100 seconds
time/=100;
reg_dh=(Bit8u)((Bitu)time % 60); // seconds
time/=60;
reg_cl=(Bit8u)((Bitu)time % 60); // minutes
time/=60;
reg_ch=(Bit8u)((Bitu)time % 24); // hours
//Simulate DOS overhead for timing-sensitive games
//Robomaze 2
overhead();
break;
}
case 0x2d: /* Set System Time */
LOG(LOG_DOSMISC,LOG_ERROR)("DOS:Set System Time not supported");
//Check input parameters nonetheless
if( reg_ch > 23 || reg_cl > 59 || reg_dh > 59 || reg_dl > 99 )
reg_al = 0xff;
else { //Allow time to be set to zero. Restore the orginal time for all other parameters. (QuickBasic)
if (reg_cx == 0 && reg_dx == 0) {time_start = mem_readd(BIOS_TIMER);LOG_MSG("Warning: game messes with DOS time!");}
else time_start = 0;
reg_al = 0;
}
break;
case 0x2e: /* Set Verify flag */
dos.verify=(reg_al==1);
break;
case 0x2f: /* Get Disk Transfer Area */
SegSet16(es,RealSeg(dos.dta()));
reg_bx=RealOff(dos.dta());
break;
case 0x30: /* Get DOS Version */
if (reg_al==0) reg_bh=0xFF; /* Fake Microsoft DOS */
if (reg_al==1) reg_bh=0x10; /* DOS is in HMA */
reg_al=dos.version.major;
reg_ah=dos.version.minor;
/* Serialnumber */
reg_bl=0x00;
reg_cx=0x0000;
break;
case 0x31: /* Terminate and stay resident */
// Important: This service does not set the carry flag!
DOS_ResizeMemory(dos.psp(),®_dx);
DOS_Terminate(dos.psp(),true,reg_al);
break;
case 0x1f: /* Get drive parameter block for default drive */
case 0x32: /* Get drive parameter block for specific drive */
{ /* Officially a dpb should be returned as well. The disk detection part is implemented */
Bit8u drive=reg_dl;
if (!drive || reg_ah==0x1f) drive = DOS_GetDefaultDrive();
else drive--;
if (Drives[drive]) {
reg_al = 0x00;
SegSet16(ds,dos.tables.dpb);
reg_bx = drive;//Faking only the first entry (that is the driveletter)
LOG(LOG_DOSMISC,LOG_ERROR)("Get drive parameter block.");
} else {
reg_al=0xff;
}
}
break;
case 0x33: /* Extended Break Checking */
switch (reg_al) {
case 0:reg_dl=dos.breakcheck;break; /* Get the breakcheck flag */
case 1:dos.breakcheck=(reg_dl>0);break; /* Set the breakcheck flag */
case 2:{bool old=dos.breakcheck;dos.breakcheck=(reg_dl>0);reg_dl=old;}break;
case 3: /* Get cpsw */
/* Fallthrough */
case 4: /* Set cpsw */
LOG(LOG_DOSMISC,LOG_ERROR)("Someone playing with cpsw %x",reg_ax);
break;
case 5:reg_dl=3;break;//TODO should be z /* Always boot from c: :) */
case 6: /* Get true version number */
reg_bl=dos.version.major;
reg_bh=dos.version.minor;
reg_dl=dos.version.revision;
reg_dh=0x10; /* Dos in HMA */
break;
default:
LOG(LOG_DOSMISC,LOG_ERROR)("Weird 0x33 call %2X",reg_al);
reg_al =0xff;
break;
}
break;
case 0x34: /* Get INDos Flag */
SegSet16(es,DOS_SDA_SEG);
reg_bx=DOS_SDA_OFS + 0x01;
break;
case 0x35: /* Get interrupt vector */
reg_bx=real_readw(0,((Bit16u)reg_al)*4);
SegSet16(es,real_readw(0,((Bit16u)reg_al)*4+2));
break;
case 0x36: /* Get Free Disk Space */
{
Bit16u bytes,clusters,free;
Bit8u sectors;
if (DOS_GetFreeDiskSpace(reg_dl,&bytes,§ors,&clusters,&free)) {
reg_ax=sectors;
reg_bx=free;
reg_cx=bytes;
reg_dx=clusters;
} else {
Bit8u drive=reg_dl;
if (drive==0) drive=DOS_GetDefaultDrive();
else drive--;
if (drive<2) {
// floppy drive, non-present drivesdisks issue floppy check through int24
// (critical error handler); needed for Mixed up Mother Goose (hook)
// CALLBACK_RunRealInt(0x24);
}
reg_ax=0xffff; // invalid drive specified
}
}
break;
case 0x37: /* Get/Set Switch char Get/Set Availdev thing */
//TODO Give errors for these functions to see if anyone actually uses this shit-
switch (reg_al) {
case 0:
reg_al=0;reg_dl=0x2f;break; /* always return '/' like dos 5.0+ */
case 1:
reg_al=0;break;
case 2:
reg_al=0;reg_dl=0x2f;break;
case 3:
reg_al=0;break;
};
LOG(LOG_MISC,LOG_ERROR)("DOS:0x37:Call for not supported switchchar");
break;
case 0x38: /* Set Country Code */
if (reg_al==0) { /* Get country specidic information */
PhysPt dest = SegPhys(ds)+reg_dx;
MEM_BlockWrite(dest,dos.tables.country,0x18);
reg_ax = reg_bx = 0x01;
CALLBACK_SCF(false);
break;
} else { /* Set country code */
LOG(LOG_MISC,LOG_ERROR)("DOS:Setting country code not supported");
}
CALLBACK_SCF(true);
break;
case 0x39: /* MKDIR Create directory */
MEM_StrCopy(SegPhys(ds)+reg_dx,name1,DOSNAMEBUF);
if (DOS_MakeDir(name1)) {
reg_ax=0x05; /* ax destroyed */
CALLBACK_SCF(false);
} else {
reg_ax=dos.errorcode;
CALLBACK_SCF(true);
}
break;
case 0x3a: /* RMDIR Remove directory */
MEM_StrCopy(SegPhys(ds)+reg_dx,name1,DOSNAMEBUF);
if (DOS_RemoveDir(name1)) {
reg_ax=0x05; /* ax destroyed */
CALLBACK_SCF(false);
} else {
reg_ax=dos.errorcode;
CALLBACK_SCF(true);
LOG(LOG_MISC,LOG_NORMAL)("Remove dir failed on %s with error %X",name1,dos.errorcode);
}
break;
case 0x3b: /* CHDIR Set current directory */
MEM_StrCopy(SegPhys(ds)+reg_dx,name1,DOSNAMEBUF);
if (DOS_ChangeDir(name1)) {
reg_ax=0x00; /* ax destroyed */
CALLBACK_SCF(false);
} else {
reg_ax=dos.errorcode;
CALLBACK_SCF(true);
}
break;
case 0x3c: /* CREATE Create of truncate file */
MEM_StrCopy(SegPhys(ds)+reg_dx,name1,DOSNAMEBUF);
if (DOS_CreateFile(name1,reg_cx,®_ax)) {
CALLBACK_SCF(false);
} else {
reg_ax=dos.errorcode;
CALLBACK_SCF(true);
}
break;
case 0x3d: /* OPEN Open existing file */
MEM_StrCopy(SegPhys(ds)+reg_dx,name1,DOSNAMEBUF);
if (DOS_OpenFile(name1,reg_al,®_ax)) {
CALLBACK_SCF(false);
} else {
reg_ax=dos.errorcode;
CALLBACK_SCF(true);
}
break;
case 0x3e: /* CLOSE Close file */
if (DOS_CloseFile(reg_bx)) {
// reg_al=0x01; /* al destroyed. Refcount */
CALLBACK_SCF(false);
} else {
reg_ax=dos.errorcode;
CALLBACK_SCF(true);
}
break;
case 0x3f: /* READ Read from file or device */
{
Bit16u toread=reg_cx;
dos.echo=true;
if (DOS_ReadFile(reg_bx,dos_copybuf,&toread)) {
MEM_BlockWrite(SegPhys(ds)+reg_dx,dos_copybuf,toread);
reg_ax=toread;
CALLBACK_SCF(false);
} else {
reg_ax=dos.errorcode;
CALLBACK_SCF(true);
}
modify_cycles(reg_ax);
dos.echo=false;
break;
}
case 0x40: /* WRITE Write to file or device */
{
Bit16u towrite=reg_cx;
MEM_BlockRead(SegPhys(ds)+reg_dx,dos_copybuf,towrite);
if (DOS_WriteFile(reg_bx,dos_copybuf,&towrite)) {
reg_ax=towrite;
CALLBACK_SCF(false);
} else {
reg_ax=dos.errorcode;
CALLBACK_SCF(true);
}
modify_cycles(reg_ax);
break;
};
case 0x41: /* UNLINK Delete file */
MEM_StrCopy(SegPhys(ds)+reg_dx,name1,DOSNAMEBUF);
if (DOS_UnlinkFile(name1)) {
CALLBACK_SCF(false);
} else {
reg_ax=dos.errorcode;
CALLBACK_SCF(true);
}
break;
case 0x42: /* LSEEK Set current file position */
{
Bit32u pos=(reg_cx<<16) + reg_dx;
if (DOS_SeekFile(reg_bx,&pos,reg_al)) {
reg_dx=(Bit16u)(pos >> 16);
reg_ax=(Bit16u)(pos & 0xFFFF);
CALLBACK_SCF(false);
} else {
reg_ax=dos.errorcode;
CALLBACK_SCF(true);
}
break;
}
void DOS_SetupTables(void) {
dos_memseg=0xd000;
Bit16u seg,seg2;Bitu i;
dos.tables.mediaid=RealMake(DOS_GetMemory(4),0);
dos.tables.tempdta=RealMake(DOS_GetMemory(4),0);
dos.tables.tempdta_fcbdelete=RealMake(DOS_GetMemory(4),0);
for (i=0;i<DOS_DRIVES;i++) mem_writew(Real2Phys(dos.tables.mediaid)+i*2,0);
/* Create the DOS Info Block */
dos_infoblock.SetLocation(DOS_INFOBLOCK_SEG); //c2woody
/* create SDA */
DOS_SDA(DOS_SDA_SEG,0).Init();
/* Some weird files >20 detection routine */
/* Possibly obselete when SFT is properly handled */
real_writed(DOS_CONSTRING_SEG,0x0a,0x204e4f43);
real_writed(DOS_CONSTRING_SEG,0x1a,0x204e4f43);
real_writed(DOS_CONSTRING_SEG,0x2a,0x204e4f43);
/* create a CON device driver */
seg=DOS_CONDRV_SEG;
real_writed(seg,0x00,0xffffffff); // next ptr
real_writew(seg,0x04,0x8013); // attributes
real_writed(seg,0x06,0xffffffff); // strategy routine
real_writed(seg,0x0a,0x204e4f43); // driver name
real_writed(seg,0x0e,0x20202020); // driver name
dos_infoblock.SetDeviceChainStart(RealMake(seg,0));
/* Create a fake Current Directory Structure */
seg=DOS_CDS_SEG;
real_writed(seg,0x00,0x005c3a43);
dos_infoblock.SetCurDirStruct(RealMake(seg,0));
/* Allocate DCBS DOUBLE BYTE CHARACTER SET LEAD-BYTE TABLE */
dos.tables.dcbs=RealMake(DOS_GetMemory(12),0);
mem_writed(Real2Phys(dos.tables.dcbs),0); //empty table
/* Create a fake FCB SFT */
seg=DOS_GetMemory(4);
real_writed(seg,0,0xffffffff); //Last File Table
real_writew(seg,4,100); //File Table supports 100 files
dos_infoblock.SetFCBTable(RealMake(seg,0));
/* Create a fake disk buffer head */
seg=DOS_GetMemory(6);
for (Bitu ct=0; ct<0x20; ct++) real_writeb(seg,ct,0);
real_writew(seg,0x00,0xffff); // forward ptr
real_writew(seg,0x02,0xffff); // backward ptr
real_writeb(seg,0x04,0xff); // not in use
real_writeb(seg,0x0a,0x01); // number of FATs
real_writed(seg,0x0d,0xffffffff); // pointer to DPB
dos_infoblock.SetDiskBufferHeadPt(RealMake(seg,0));
/* Set buffers to a nice value */
dos_infoblock.SetBuffers(50,50);
/* case map routine INT 0x21 0x38 */
call_casemap = CALLBACK_Allocate();
CALLBACK_Setup(call_casemap,DOS_CaseMapFunc,CB_RETF,"DOS CaseMap");
/* Add it to country structure */
host_writed(country_info + 0x12, CALLBACK_RealPointer(call_casemap));
dos.tables.country=country_info;
}
void DOS_InfoBlock::SetLocation(Bit16u segment) {
seg = segment;
pt=PhysMake(seg,0);
/* Clear the initial Block */
for(Bitu i=0;i<sizeof(sDIB);i++) mem_writeb(pt+i,0xff);
for(Bitu i=0;i<14;i++) mem_writeb(pt+i,0);
sSave(sDIB,regCXfrom5e,(Bit16u)0);
sSave(sDIB,countLRUcache,(Bit16u)0);
sSave(sDIB,countLRUopens,(Bit16u)0);
sSave(sDIB,protFCBs,(Bit16u)0);
sSave(sDIB,specialCodeSeg,(Bit16u)0);
sSave(sDIB,joindedDrives,(Bit8u)0);
sSave(sDIB,lastdrive,(Bit8u)0x01);//increase this if you add drives to cds-chain
sSave(sDIB,diskInfoBuffer,RealMake(segment,offsetof(sDIB,diskBufferHeadPt)));
sSave(sDIB,setverPtr,(Bit32u)0);
sSave(sDIB,a20FixOfs,(Bit16u)0);
sSave(sDIB,pspLastIfHMA,(Bit16u)0);
sSave(sDIB,blockDevices,(Bit8u)0);
sSave(sDIB,bootDrive,(Bit8u)0);
sSave(sDIB,useDwordMov,(Bit8u)1);
sSave(sDIB,extendedSize,(Bit16u)(MEM_TotalPages()*4-1024));
sSave(sDIB,magicWord,(Bit16u)0x0001); // dos5+
sSave(sDIB,sharingCount,(Bit16u)0);
sSave(sDIB,sharingDelay,(Bit16u)0);
sSave(sDIB,ptrCONinput,(Bit16u)0); // no unread input available
sSave(sDIB,maxSectorLength,(Bit16u)0x200);
sSave(sDIB,dirtyDiskBuffers,(Bit16u)0);
sSave(sDIB,lookaheadBufPt,(Bit32u)0);
sSave(sDIB,lookaheadBufNumber,(Bit16u)0);
sSave(sDIB,bufferLocation,(Bit8u)0); // buffer in base memory, no workspace
sSave(sDIB,workspaceBuffer,(Bit32u)0);
sSave(sDIB,minMemForExec,(Bit16u)0);
sSave(sDIB,memAllocScanStart,(Bit16u)DOS_MEM_START);
sSave(sDIB,startOfUMBChain,(Bit16u)0xffff);
sSave(sDIB,chainingUMB,(Bit8u)0);
sSave(sDIB,nulNextDriver,(Bit32u)0xffffffff);
sSave(sDIB,nulAttributes,(Bit16u)0x8004);
sSave(sDIB,nulStrategy,(Bit32u)0x00000000);
sSave(sDIB,nulString[0],(Bit8u)0x4e);
sSave(sDIB,nulString[1],(Bit8u)0x55);
sSave(sDIB,nulString[2],(Bit8u)0x4c);
sSave(sDIB,nulString[3],(Bit8u)0x20);
sSave(sDIB,nulString[4],(Bit8u)0x20);
sSave(sDIB,nulString[5],(Bit8u)0x20);
sSave(sDIB,nulString[6],(Bit8u)0x20);
sSave(sDIB,nulString[7],(Bit8u)0x20);
/* Create a fake SFT, so programs think there are 100 file handles */
Bit16u sftOffset=offsetof(sDIB,firstFileTable)+0xa2;
sSave(sDIB,firstFileTable,RealMake(segment,sftOffset));
real_writed(segment,sftOffset+0x00,RealMake(segment+0x26,0)); //Next File Table
real_writew(segment,sftOffset+0x04,100); //File Table supports 100 files
real_writed(segment+0x26,0x00,0xffffffff); //Last File Table
real_writew(segment+0x26,0x04,100); //File Table supports 100 files
}
static bool DOS_MultiplexFunctions(void) {
switch (reg_ax) {
/* ert, 20100711: Locking extensions */
case 0x1000: /* SHARE.EXE installation check */
if (enable_share_exe_fake) {
reg_ax=0xffff; /* Pretend that share.exe is installed.. Of course it's a bloody LIE! */
}
else {
return false; /* pass it on */
}
break;
case 0x1216: /* GET ADDRESS OF SYSTEM FILE TABLE ENTRY */
// reg_bx is a system file table entry, should coincide with
// the file handle so just use that
LOG(LOG_DOSMISC,LOG_ERROR)("Some BAD filetable call used bx=%X",reg_bx);
if(reg_bx <= DOS_FILES) CALLBACK_SCF(false);
else CALLBACK_SCF(true);
if (reg_bx<16) {
RealPt sftrealpt=mem_readd(Real2Phys(dos_infoblock.GetPointer())+4);
PhysPt sftptr=Real2Phys(sftrealpt);
Bitu sftofs=0x06+reg_bx*0x3b;
if (Files[reg_bx]) mem_writeb(sftptr+sftofs,Files[reg_bx]->refCtr);
else mem_writeb(sftptr+sftofs,0);
if (!Files[reg_bx]) return true;
Bit32u handle=RealHandle(reg_bx);
if (handle>=DOS_FILES) {
mem_writew(sftptr+sftofs+0x02,0x02); // file open mode
mem_writeb(sftptr+sftofs+0x04,0x00); // file attribute
mem_writew(sftptr+sftofs+0x05,Files[reg_bx]->GetInformation()); // device info word
mem_writed(sftptr+sftofs+0x07,0); // device driver header
mem_writew(sftptr+sftofs+0x0d,0); // packed time
mem_writew(sftptr+sftofs+0x0f,0); // packed date
mem_writew(sftptr+sftofs+0x11,0); // size
mem_writew(sftptr+sftofs+0x15,0); // current position
} else {
Bit8u drive=Files[reg_bx]->GetDrive();
mem_writew(sftptr+sftofs+0x02,(Bit16u)(Files[reg_bx]->flags&3)); // file open mode
mem_writeb(sftptr+sftofs+0x04,(Bit8u)(Files[reg_bx]->attr)); // file attribute
mem_writew(sftptr+sftofs+0x05,0x40|drive); // device info word
mem_writed(sftptr+sftofs+0x07,RealMake(dos.tables.dpb,drive)); // dpb of the drive
mem_writew(sftptr+sftofs+0x0d,Files[reg_bx]->time); // packed file time
mem_writew(sftptr+sftofs+0x0f,Files[reg_bx]->date); // packed file date
Bit32u curpos=0;
Files[reg_bx]->Seek(&curpos,DOS_SEEK_CUR);
Bit32u endpos=0;
Files[reg_bx]->Seek(&endpos,DOS_SEEK_END);
mem_writed(sftptr+sftofs+0x11,endpos); // size
mem_writed(sftptr+sftofs+0x15,curpos); // current position
Files[reg_bx]->Seek(&curpos,DOS_SEEK_SET);
}
// fill in filename in fcb style
// (space-padded name (8 chars)+space-padded extension (3 chars))
const char* filename=(const char*)Files[reg_bx]->GetName();
if (strrchr(filename,'\\')) filename=strrchr(filename,'\\')+1;
if (strrchr(filename,'/')) filename=strrchr(filename,'/')+1;
if (!filename) return true;
const char* dotpos=strrchr(filename,'.');
if (dotpos) {
dotpos++;
size_t nlen=strlen(filename);
size_t extlen=strlen(dotpos);
Bits nmelen=(Bits)nlen-(Bits)extlen;
if (nmelen<1) return true;
nlen-=(extlen+1);
if (nlen>8) nlen=8;
size_t i;
for (i=0; i<nlen; i++)
mem_writeb((PhysPt)(sftptr+sftofs+0x20+i),filename[i]);
for (i=nlen; i<8; i++)
mem_writeb((PhysPt)(sftptr+sftofs+0x20+i),' ');
if (extlen>3) extlen=3;
for (i=0; i<extlen; i++)
mem_writeb((PhysPt)(sftptr+sftofs+0x28+i),dotpos[i]);
for (i=extlen; i<3; i++)
mem_writeb((PhysPt)(sftptr+sftofs+0x28+i),' ');
} else {
size_t i;
size_t nlen=strlen(filename);
if (nlen>8) nlen=8;
for (i=0; i<nlen; i++)
mem_writeb((PhysPt)(sftptr+sftofs+0x20+i),filename[i]);
for (i=nlen; i<11; i++)
mem_writeb((PhysPt)(sftptr+sftofs+0x20+i),' ');
}
SegSet16(es,RealSeg(sftrealpt));
reg_di=RealOff(sftrealpt+sftofs);
reg_ax=0xc000;
}
return true;
case 0x1605: /* Windows init broadcast */
if (enable_a20_on_windows_init) {
/* This hack exists because Windows 3.1 doesn't seem to enable A20 first during an
* initial critical period where it assumes it's on, prior to checking and enabling/disabling it.
*
* Note that Windows 3.1 also makes this mistake in Standard/286 mode, but it doesn't even
* make this callout, so this hack is useless unless you are using Enhanced/386 mode.
* If you want to run Windows 3.1 Standard mode with a20=mask you will have to run builtin
* command "a20gate on" to turn on the A20 gate prior to starting Windows. */
LOG_MSG("Enabling A20 gate for Windows in response to INIT broadcast");
XMS_EnableA20(true);
}
/* TODO: Maybe future parts of DOSBox-X will do something with this */
/* TODO: Don't show this by default. Show if the user wants it by a) setting something to "true" in dosbox.conf or b) running a builtin command in Z:\ */
LOG_MSG("DEBUG: INT 2Fh Windows 286/386 DOSX init broadcast issued (ES:BX=%04x:%04x DS:SI=%04x:%04x CX=%04x DX=%04x DI=%04x(aka version %u.%u))",
SegValue(es),reg_bx,
SegValue(ds),reg_si,
reg_cx,reg_dx,reg_di,
reg_di>>8,reg_di&0xFF);
if (reg_dx & 0x0001)
LOG_MSG(" [286 DOS extender]");
else
LOG_MSG(" [Enhanced mode]");
LOG_MSG("\n");
/* NTS: The way this protocol works, is that when you (the program hooking this call) receive it,
* you first pass the call down to the previous INT 2Fh handler with registers unmodified,
* and then when the call unwinds back up the chain, THEN you modify the results to notify
* yourself to Windows. So logically, since we're the DOS kernel at the end of the chain,
* we should still see ES:BX=0000:0000 and DS:SI=0000:0000 and CX=0000 unmodified from the
* way the Windows kernel issued the call. If that's not the case, then we need to issue
* a warning because some bastard on the call chain is ruining it for all of us. */
if (SegValue(es) != 0 || reg_bx != 0 || SegValue(ds) != 0 || reg_si != 0 || reg_cx != 0) {
LOG_MSG("WARNING: Some registers at this point (the top of the call chain) are nonzero.\n");
LOG_MSG(" That means a TSR or other entity has modified registers on the way down\n");
LOG_MSG(" the call chain. The Windows init broadcast is supposed to be handled\n");
LOG_MSG(" going down the chain by calling the previous INT 2Fh handler with registers\n");
LOG_MSG(" unmodified, and only modify registers on the way back up the chain!\n");
}
return false; /* pass it on to other INT 2F handlers */
case 0x1606: /* Windows exit broadcast */
/* TODO: Maybe future parts of DOSBox-X will do something with this */
/* TODO: Don't show this by default. Show if the user wants it by a) setting something to "true" in dosbox.conf or b) running a builtin command in Z:\ */
LOG_MSG("DEBUG: INT 2Fh Windows 286/386 DOSX exit broadcast issued (DX=0x%04x)",reg_dx);
if (reg_dx & 0x0001)
LOG_MSG(" [286 DOS extender]");
else
LOG_MSG(" [Enhanced mode]");
LOG_MSG("\n");
return false; /* pass it on to other INT 2F handlers */
case 0x1607:
/* TODO: Don't show this by default. Show if the user wants it by a) setting something to "true" in dosbox.conf or b) running a builtin command in Z:\
* Additionally, if the user WANTS to see every invocation of the IDLE call, then allow them to enable that too */
if (reg_bx != 0x18) { /* don't show the idle call. it's used too often */
const char *str = Win_NameThatVXD(reg_bx);
if (str == NULL) str = "??";
LOG_MSG("DEBUG: INT 2Fh Windows virtual device '%s' callout (BX(deviceID)=0x%04x CX(function)=0x%04x)\n",
str,reg_bx,reg_cx);
}
if (reg_bx == 0x15) { /* DOSMGR */
switch (reg_cx) {
case 0x0000: // query instance
reg_cx = 0x0001;
reg_dx = 0x50; // dos driver segment
SegSet16(es,0x50); // patch table seg
reg_bx = 0x60; // patch table ofs
return true;
case 0x0001: // set patches
reg_ax = 0xb97c;
reg_bx = (reg_dx & 0x16);
reg_dx = 0xa2ab;
return true;
case 0x0003: // get size of data struc
if (reg_dx==0x0001) {
// CDS size requested
reg_ax = 0xb97c;
reg_dx = 0xa2ab;
reg_cx = 0x000e; // size
}
return true;
case 0x0004: // instanced data
reg_dx = 0; // none
return true;
case 0x0005: // get device driver size
reg_ax = 0;
reg_dx = 0;
return true;
default:
return false;
}
}
else if (reg_bx == 0x18) { /* VMPoll (idle) */
return true;
}
else return false;
case 0x1680: /* RELEASE CURRENT VIRTUAL MACHINE TIME-SLICE */
//TODO Maybe do some idling but could screw up other systems :)
return true; //So no warning in the debugger anymore
case 0x1689: /* Kernel IDLE CALL */
case 0x168f: /* Close awareness crap */
/* Removing warning */
return true;
case 0x4a01: { /* Query free hma space */
Bit32u limit = DOS_HMA_LIMIT();
if (limit == 0) {
/* TODO: What does MS-DOS prior to v5.0? */
reg_bx = 0;
reg_di = 0xFFFF;
SegSet16(es,0xFFFF);
LOG(LOG_MISC,LOG_DEBUG)("HMA query: rejected");
return true;
}
Bit32u start = DOS_HMA_FREE_START();
reg_bx = limit - start; /* free space in bytes */
SegSet16(es,0xffff);
reg_di = (start + 0x10) & 0xFFFF;
LOG(LOG_MISC,LOG_DEBUG)("HMA query: start=0x%06x limit=0x%06x free=0x%06x -> bx=%u %04x:%04x",
start,limit,DOS_HMA_GET_FREE_SPACE(),(int)reg_bx,(int)SegValue(es),(int)reg_di);
} return true;
case 0x4a02: { /* ALLOCATE HMA SPACE */
Bit32u limit = DOS_HMA_LIMIT();
if (limit == 0) {
/* TODO: What does MS-DOS prior to v5.0? */
reg_bx = 0;
reg_di = 0xFFFF;
SegSet16(es,0xFFFF);
LOG(LOG_MISC,LOG_DEBUG)("HMA allocation: rejected");
return true;
}
/* NTS: According to RBIL, Windows 95 adds a deallocate function and changes HMA allocation up to follow a
* MCB chain structure. Which is something we're probably not going to add for awhile. */
/* FIXME: So, according to Ralph Brown Interrupt List, MS-DOS 5 and 6 liked to round up to the next paragraph? */
if (dos.version.major < 7 && (reg_bx & 0xF) != 0)
reg_bx = (reg_bx + 0xF) & (~0xF);
Bit32u start = DOS_HMA_FREE_START();
if ((start+reg_bx) > limit) {
LOG(LOG_MISC,LOG_DEBUG)("HMA allocation: rejected (not enough room) for %u bytes",reg_bx);
reg_bx = 0;
reg_di = 0xFFFF;
SegSet16(es,0xFFFF);
return true;
}
/* convert the start to segment:offset, normalized to FFFF:offset */
reg_di = (start - 0x10) & 0xFFFF;
SegSet16(es,0xFFFF);
/* let HMA emulation know what was claimed */
LOG(LOG_MISC,LOG_DEBUG)("HMA allocation: %u bytes at FFFF:%04x",reg_bx,reg_di);
DOS_HMA_CLAIMED(reg_bx);
} return true;
}
return false;
}
void DOS_SetupTables(void) {
Bit16u seg;Bitu i;
dos.tables.mediaid=RealMake(DOS_GetMemory(4),0);
dos.tables.tempdta=RealMake(DOS_GetMemory(4),0);
dos.tables.tempdta_fcbdelete=RealMake(DOS_GetMemory(4),0);
for (i=0;i<DOS_DRIVES;i++) mem_writew(Real2Phys(dos.tables.mediaid)+i*2,0);
/* Create the DOS Info Block */
dos_infoblock.SetLocation(DOS_INFOBLOCK_SEG); //c2woody
/* create SDA */
DOS_SDA(DOS_SDA_SEG,0).Init();
/* Some weird files >20 detection routine */
/* Possibly obselete when SFT is properly handled */
real_writed(DOS_CONSTRING_SEG,0x0a,0x204e4f43);
real_writed(DOS_CONSTRING_SEG,0x1a,0x204e4f43);
real_writed(DOS_CONSTRING_SEG,0x2a,0x204e4f43);
/* create a CON device driver */
seg=DOS_CONDRV_SEG;
real_writed(seg,0x00,0xffffffff); // next ptr
real_writew(seg,0x04,0x8013); // attributes
real_writed(seg,0x06,0xffffffff); // strategy routine
real_writed(seg,0x0a,0x204e4f43); // driver name
real_writed(seg,0x0e,0x20202020); // driver name
dos_infoblock.SetDeviceChainStart(RealMake(seg,0));
/* Create a fake Current Directory Structure */
seg=DOS_CDS_SEG;
real_writed(seg,0x00,0x005c3a43);
dos_infoblock.SetCurDirStruct(RealMake(seg,0));
/* Allocate DCBS DOUBLE BYTE CHARACTER SET LEAD-BYTE TABLE */
dos.tables.dbcs=RealMake(DOS_GetMemory(12),0);
mem_writed(Real2Phys(dos.tables.dbcs),0); //empty table
/* FILENAME CHARACTER TABLE */
dos.tables.filenamechar=RealMake(DOS_GetMemory(2),0);
mem_writew(Real2Phys(dos.tables.filenamechar)+0x00,0x16);
mem_writeb(Real2Phys(dos.tables.filenamechar)+0x02,0x01);
mem_writeb(Real2Phys(dos.tables.filenamechar)+0x03,0x00); // allowed chars from
mem_writeb(Real2Phys(dos.tables.filenamechar)+0x04,0xff); // ...to
mem_writeb(Real2Phys(dos.tables.filenamechar)+0x05,0x00);
mem_writeb(Real2Phys(dos.tables.filenamechar)+0x06,0x00); // excluded chars from
mem_writeb(Real2Phys(dos.tables.filenamechar)+0x07,0x20); // ...to
mem_writeb(Real2Phys(dos.tables.filenamechar)+0x08,0x02);
mem_writeb(Real2Phys(dos.tables.filenamechar)+0x09,0x0e); // number of illegal separators
mem_writeb(Real2Phys(dos.tables.filenamechar)+0x0a,0x2e);
mem_writeb(Real2Phys(dos.tables.filenamechar)+0x0b,0x22);
mem_writeb(Real2Phys(dos.tables.filenamechar)+0x0c,0x2f);
mem_writeb(Real2Phys(dos.tables.filenamechar)+0x0d,0x5c);
mem_writeb(Real2Phys(dos.tables.filenamechar)+0x0e,0x5b);
mem_writeb(Real2Phys(dos.tables.filenamechar)+0x0f,0x5d);
mem_writeb(Real2Phys(dos.tables.filenamechar)+0x10,0x3a);
mem_writeb(Real2Phys(dos.tables.filenamechar)+0x11,0x7c);
mem_writeb(Real2Phys(dos.tables.filenamechar)+0x12,0x3c);
mem_writeb(Real2Phys(dos.tables.filenamechar)+0x13,0x3e);
mem_writeb(Real2Phys(dos.tables.filenamechar)+0x14,0x2b);
mem_writeb(Real2Phys(dos.tables.filenamechar)+0x15,0x3d);
mem_writeb(Real2Phys(dos.tables.filenamechar)+0x16,0x3b);
mem_writeb(Real2Phys(dos.tables.filenamechar)+0x17,0x2c);
/* COLLATING SEQUENCE TABLE + UPCASE TABLE*/
// 256 bytes for col table, 128 for upcase, 4 for number of entries
dos.tables.collatingseq=RealMake(DOS_GetMemory(25),0);
mem_writew(Real2Phys(dos.tables.collatingseq),0x100);
for (i=0; i<256; i++) mem_writeb(Real2Phys(dos.tables.collatingseq)+i+2,i);
dos.tables.upcase=dos.tables.collatingseq+258;
mem_writew(Real2Phys(dos.tables.upcase),0x80);
for (i=0; i<128; i++) mem_writeb(Real2Phys(dos.tables.upcase)+i+2,0x80+i);
/* Create a fake FCB SFT */
seg=DOS_GetMemory(4);
real_writed(seg,0,0xffffffff); //Last File Table
real_writew(seg,4,100); //File Table supports 100 files
dos_infoblock.SetFCBTable(RealMake(seg,0));
/* Create a fake DPB */
dos.tables.dpb=DOS_GetMemory(2);
for(Bitu d=0;d<26;d++) real_writeb(dos.tables.dpb,d,d);
/* Create a fake disk buffer head */
seg=DOS_GetMemory(6);
for (Bitu ct=0; ct<0x20; ct++) real_writeb(seg,ct,0);
real_writew(seg,0x00,0xffff); // forward ptr
real_writew(seg,0x02,0xffff); // backward ptr
real_writeb(seg,0x04,0xff); // not in use
real_writeb(seg,0x0a,0x01); // number of FATs
real_writed(seg,0x0d,0xffffffff); // pointer to DPB
dos_infoblock.SetDiskBufferHeadPt(RealMake(seg,0));
/* Set buffers to a nice value */
dos_infoblock.SetBuffers(50,50);
/* case map routine INT 0x21 0x38 */
call_casemap = CALLBACK_Allocate();
CALLBACK_Setup(call_casemap,DOS_CaseMapFunc,CB_RETF,"DOS CaseMap");
/* Add it to country structure */
host_writed(country_info + 0x12, CALLBACK_RealPointer(call_casemap));
dos.tables.country=country_info;
}
void WriteMouseIntVector(void)
{
// Create a mouse vector with weird address
// for strange mouse detection routines in Sim City & Wasteland
real_writed(0,0x33<<2,RealMake(CB_SEG+1,(call_int33<<4)-0x10+1)); // +1 = Skip NOP
};
void set_timer(void)
{
bc__dos_setvect(8, (INTCAST)RealMake(0xb2a + reloc_game, 0x244));
}
bool DOS_Shell::Execute(char * name,char * args) {
/* return true => don't check for hardware changes in do_command
* return false => check for hardware changes in do_command */
char fullname[DOS_PATHLENGTH+4]; //stores results from Which
char* p_fullname;
char line[CMD_MAXLINE];
if(strlen(args)!= 0){
if(*args != ' '){ //put a space in front
line[0]=' ';line[1]=0;
strncat(line,args,CMD_MAXLINE-2);
line[CMD_MAXLINE-1]=0;
}
else
{
safe_strncpy(line,args,CMD_MAXLINE);
}
}else{
line[0]=0;
};
/* check for a drive change */
if (((strcmp(name + 1, ":") == 0) || (strcmp(name + 1, ":\\") == 0)) && isalpha(*name))
{
if (!DOS_SetDrive(toupper(name[0])-'A')) {
WriteOut(MSG_Get("SHELL_EXECUTE_DRIVE_NOT_FOUND"),toupper(name[0]));
}
return true;
}
/* Check for a full name */
p_fullname = Which(name);
if (!p_fullname) return false;
strcpy(fullname,p_fullname);
const char* extension = strrchr(fullname,'.');
__android_log_print(ANDROID_LOG_INFO, "dosbox", "command fullname:%s", fullname);
/*always disallow files without extension from being executed. */
/*only internal commands can be run this way and they never get in this handler */
if(extension == 0)
{
//Check if the result will fit in the parameters. Else abort
if(strlen(fullname) >( DOS_PATHLENGTH - 1) ) return false;
char temp_name[DOS_PATHLENGTH+4],* temp_fullname;
//try to add .com, .exe and .bat extensions to filename
strcpy(temp_name,fullname);
strcat(temp_name,".COM");
temp_fullname=Which(temp_name);
if (temp_fullname) { extension=".com";strcpy(fullname,temp_fullname); }
else
{
strcpy(temp_name,fullname);
strcat(temp_name,".EXE");
temp_fullname=Which(temp_name);
if (temp_fullname) { extension=".exe";strcpy(fullname,temp_fullname);}
else
{
strcpy(temp_name,fullname);
strcat(temp_name,".BAT");
temp_fullname=Which(temp_name);
if (temp_fullname) { extension=".bat";strcpy(fullname,temp_fullname);}
else
{
return false;
}
}
}
}
if (strcasecmp(extension, ".bat") == 0)
{ /* Run the .bat file */
/* delete old batch file if call is not active*/
bool temp_echo=echo; /*keep the current echostate (as delete bf might change it )*/
if(bf && !call) delete bf;
bf=new BatchFile(this,fullname,name,line);
echo=temp_echo; //restore it.
}
else
{ /* only .bat .exe .com extensions maybe be executed by the shell */
if(strcasecmp(extension, ".com") !=0)
{
if(strcasecmp(extension, ".exe") !=0) return false;
}
/* Run the .exe or .com file from the shell */
/* Allocate some stack space for tables in physical memory */
reg_sp-=0x200;
//Add Parameter block
DOS_ParamBlock block(SegPhys(ss)+reg_sp);
block.Clear();
//Add a filename
RealPt file_name=RealMakeSeg(ss,reg_sp+0x20);
MEM_BlockWrite(Real2Phys(file_name),fullname,(Bitu)(strlen(fullname)+1));
/* HACK: Store full commandline for mount and imgmount */
full_arguments.assign(line);
/* Fill the command line */
CommandTail cmdtail;
cmdtail.count = 0;
memset(&cmdtail.buffer,0,126); //Else some part of the string is unitialized (valgrind)
if (strlen(line)>126) line[126]=0;
cmdtail.count=(Bit8u)strlen(line);
memcpy(cmdtail.buffer,line,strlen(line));
cmdtail.buffer[strlen(line)]=0xd;
/* Copy command line in stack block too */
MEM_BlockWrite(SegPhys(ss)+reg_sp+0x100,&cmdtail,128);
/* Parse FCB (first two parameters) and put them into the current DOS_PSP */
Bit8u add;
FCB_Parsename(dos.psp(),0x5C,0x00,cmdtail.buffer,&add);
FCB_Parsename(dos.psp(),0x6C,0x00,&cmdtail.buffer[add],&add);
block.exec.fcb1=RealMake(dos.psp(),0x5C);
block.exec.fcb2=RealMake(dos.psp(),0x6C);
/* Set the command line in the block and save it */
block.exec.cmdtail=RealMakeSeg(ss,reg_sp+0x100);
block.SaveData();
#if 0
/* Save CS:IP to some point where i can return them from */
Bit32u oldeip=reg_eip;
Bit16u oldcs=SegValue(cs);
RealPt newcsip=CALLBACK_RealPointer(call_shellstop);
SegSet16(cs,RealSeg(newcsip));
reg_ip=RealOff(newcsip);
#endif
/* Start up a dos execute interrupt */
reg_ax=0x4b00;
//Filename pointer
SegSet16(ds,SegValue(ss));
reg_dx=RealOff(file_name);
//Paramblock
SegSet16(es,SegValue(ss));
reg_bx=reg_sp;
SETFLAGBIT(IF,false);
CALLBACK_RunRealInt(0x21);
/* Restore CS:IP and the stack */
reg_sp+=0x200;
#if 0
reg_eip=oldeip;
SegSet16(cs,oldcs);
#endif
}
return true; //Executable started
}
void MOUSE_Init(Section* /*sec*/) {
// Callback for mouse interrupt 0x33
call_int33=CALLBACK_Allocate();
// RealPt i33loc=RealMake(CB_SEG+1,(call_int33*CB_SIZE)-0x10);
RealPt i33loc=RealMake(DOS_GetMemory(0x1)-1,0x10);
CALLBACK_Setup(call_int33,&INT33_Handler,CB_MOUSE,Real2Phys(i33loc),"Mouse");
// Wasteland needs low(seg(int33))!=0 and low(ofs(int33))!=0
real_writed(0,0x33<<2,i33loc);
call_mouse_bd=CALLBACK_Allocate();
CALLBACK_Setup(call_mouse_bd,&MOUSE_BD_Handler,CB_RETF8,
PhysMake(RealSeg(i33loc),RealOff(i33loc)+2),"MouseBD");
// pseudocode for CB_MOUSE (including the special backdoor entry point):
// jump near i33hd
// callback MOUSE_BD_Handler
// retf 8
// label i33hd:
// callback INT33_Handler
// iret
// Callback for ps2 irq
call_int74=CALLBACK_Allocate();
CALLBACK_Setup(call_int74,&INT74_Handler,CB_IRQ12,"int 74");
// pseudocode for CB_IRQ12:
// push ds
// push es
// pushad
// sti
// callback INT74_Handler
// doesn't return here, but rather to CB_IRQ12_RET
// (ps2 callback/user callback inbetween if requested)
int74_ret_callback=CALLBACK_Allocate();
CALLBACK_Setup(int74_ret_callback,&MOUSE_UserInt_CB_Handler,CB_IRQ12_RET,"int 74 ret");
// pseudocode for CB_IRQ12_RET:
// callback MOUSE_UserInt_CB_Handler
// cli
// mov al, 0x20
// out 0xa0, al
// out 0x20, al
// popad
// pop es
// pop ds
// iret
Bit8u hwvec=(MOUSE_IRQ>7)?(0x70+MOUSE_IRQ-8):(0x8+MOUSE_IRQ);
RealSetVec(hwvec,CALLBACK_RealPointer(call_int74));
// Callback for ps2 user callback handling
useps2callback = false; ps2callbackinit = false;
call_ps2=CALLBACK_Allocate();
CALLBACK_Setup(call_ps2,&PS2_Handler,CB_RETF,"ps2 bios callback");
ps2_callback=CALLBACK_RealPointer(call_ps2);
memset(&mouse,0,sizeof(mouse));
mouse.hidden = 1; //Hide mouse on startup
mouse.timer_in_progress = false;
mouse.mode = 0xFF; //Non existing mode
mouse.sub_mask=0;
mouse.sub_seg=0x6362; // magic value
mouse.sub_ofs=0;
Mouse_ResetHardware();
Mouse_Reset();
Mouse_SetSensitivity(50,50,50);
}
RealPt DOS_InfoBlock::GetPointer(void) {
return RealMake(seg,offsetof(sDIB,firstDPB));
}
void DOS_SetupMemory(void) {
/* Let dos claim a few bios interrupts. Makes DOSBox more compatible with
* buggy games, which compare against the interrupt table. (probably a
* broken linked list implementation) */
Bit16u ihseg = 0x70;
Bit16u ihofs = 0x08;
real_writeb(ihseg,ihofs,(Bit8u)0xCF); //An IRET Instruction
RealSetVec(0x01,RealMake(ihseg,ihofs)); //BioMenace (offset!=4)
RealSetVec(0x02,RealMake(ihseg,ihofs)); //BioMenace (segment<0x8000)
RealSetVec(0x03,RealMake(ihseg,ihofs)); //Alien Incident (offset!=0)
RealSetVec(0x04,RealMake(ihseg,ihofs)); //Shadow President (lower byte of segment!=0)
RealSetVec(0x0f,RealMake(ihseg,ihofs)); //Always a tricky one (soundblaster irq)
// Create a dummy device MCB with PSPSeg=0x0008
DOS_MCB mcb_devicedummy((Bit16u)DOS_MEM_START);
mcb_devicedummy.SetPSPSeg(MCB_DOS); // Devices
mcb_devicedummy.SetSize(1);
mcb_devicedummy.SetType(0x4d); // More blocks will follow
// mcb_devicedummy.SetFileName("SD ");
Bit16u mcb_sizes=2;
// Create a small empty MCB (result from a growing environment block)
DOS_MCB tempmcb((Bit16u)DOS_MEM_START+mcb_sizes);
tempmcb.SetPSPSeg(MCB_FREE);
tempmcb.SetSize(4);
mcb_sizes+=5;
tempmcb.SetType(0x4d);
// Lock the previous empty MCB
DOS_MCB tempmcb2((Bit16u)DOS_MEM_START+mcb_sizes);
tempmcb2.SetPSPSeg(0x40); // can be removed by loadfix
tempmcb2.SetSize(16);
mcb_sizes+=17;
tempmcb2.SetType(0x4d);
DOS_MCB mcb((Bit16u)DOS_MEM_START+mcb_sizes);
mcb.SetPSPSeg(MCB_FREE); //Free
mcb.SetType(0x5a); //Last Block
if (machine==MCH_TANDY) {
/* memory up to 608k available, the rest (to 640k) is used by
the tandy graphics system's variable mapping of 0xb800 */
mcb.SetSize(0x9BFF - DOS_MEM_START - mcb_sizes);
} else if (machine==MCH_PCJR) {
/* memory from 128k to 640k is available */
mcb_devicedummy.SetPt((Bit16u)0x2000);
mcb_devicedummy.SetPSPSeg(MCB_FREE);
mcb_devicedummy.SetSize(0x9FFF - 0x2000);
mcb_devicedummy.SetType(0x5a);
/* exclude PCJr graphics region */
mcb_devicedummy.SetPt((Bit16u)0x17ff);
mcb_devicedummy.SetPSPSeg(MCB_DOS);
mcb_devicedummy.SetSize(0x800);
mcb_devicedummy.SetType(0x4d);
/* memory below 96k */
mcb.SetSize(0x1800 - DOS_MEM_START - (2+mcb_sizes));
mcb.SetType(0x4d);
} else {
/* complete memory up to 640k available */
/* last paragraph used to add UMB chain to low-memory MCB chain */
mcb.SetSize(0x9FFE - DOS_MEM_START - mcb_sizes);
}
dos.firstMCB=DOS_MEM_START;
dos_infoblock.SetFirstMCB(DOS_MEM_START);
}
static bool DOS_MultiplexFunctions(void) {
char name[256];
switch (reg_ax) {
case 0x1216: /* GET ADDRESS OF SYSTEM FILE TABLE ENTRY */
// reg_bx is a system file table entry, should coincide with
// the file handle so just use that
LOG(LOG_DOSMISC,LOG_ERROR)("Some BAD filetable call used bx=%X",reg_bx);
if(reg_bx <= DOS_FILES) CALLBACK_SCF(false);
else CALLBACK_SCF(true);
if (reg_bx<16) {
RealPt sftrealpt=mem_readd(Real2Phys(dos_infoblock.GetPointer())+4);
PhysPt sftptr=Real2Phys(sftrealpt);
Bitu sftofs=0x06+reg_bx*0x3b;
if (Files[reg_bx]) mem_writeb(sftptr+sftofs,Files[reg_bx]->refCtr);
else mem_writeb(sftptr+sftofs,0);
if (!Files[reg_bx]) return true;
Bit32u handle=RealHandle(reg_bx);
if (handle>=DOS_FILES) {
mem_writew(sftptr+sftofs+0x02,0x02); // file open mode
mem_writeb(sftptr+sftofs+0x04,0x00); // file attribute
mem_writew(sftptr+sftofs+0x05,Files[reg_bx]->GetInformation()); // device info word
mem_writed(sftptr+sftofs+0x07,0); // device driver header
mem_writew(sftptr+sftofs+0x0d,0); // packed time
mem_writew(sftptr+sftofs+0x0f,0); // packed date
mem_writew(sftptr+sftofs+0x11,0); // size
mem_writew(sftptr+sftofs+0x15,0); // current position
} else {
Bit8u drive=Files[reg_bx]->GetDrive();
mem_writew(sftptr+sftofs+0x02,(Bit16u)(Files[reg_bx]->flags&3)); // file open mode
mem_writeb(sftptr+sftofs+0x04,(Bit8u)(Files[reg_bx]->attr)); // file attribute
mem_writew(sftptr+sftofs+0x05,0x40|drive); // device info word
mem_writed(sftptr+sftofs+0x07,RealMake(dos.tables.dpb,drive)); // dpb of the drive
mem_writew(sftptr+sftofs+0x0d,Files[reg_bx]->time); // packed file time
mem_writew(sftptr+sftofs+0x0f,Files[reg_bx]->date); // packed file date
Bit32u curpos=0;
Files[reg_bx]->Seek(&curpos,DOS_SEEK_CUR);
Bit32u endpos=0;
Files[reg_bx]->Seek(&endpos,DOS_SEEK_END);
mem_writed(sftptr+sftofs+0x11,endpos); // size
mem_writed(sftptr+sftofs+0x15,curpos); // current position
Files[reg_bx]->Seek(&curpos,DOS_SEEK_SET);
}
// fill in filename in fcb style
// (space-padded name (8 chars)+space-padded extension (3 chars))
const char* filename=(const char*)Files[reg_bx]->GetName();
if (strrchr(filename,'\\')) filename=strrchr(filename,'\\')+1;
if (strrchr(filename,'/')) filename=strrchr(filename,'/')+1;
if (!filename) return true;
const char* dotpos=strrchr(filename,'.');
if (dotpos) {
dotpos++;
size_t nlen=strlen(filename);
size_t extlen=strlen(dotpos);
Bits nmelen=(Bits)nlen-(Bits)extlen;
if (nmelen<1) return true;
nlen-=(extlen+1);
if (nlen>8) nlen=8;
size_t i;
for (i=0; i<nlen; i++)
mem_writeb((PhysPt)(sftptr+sftofs+0x20+i),filename[i]);
for (i=nlen; i<8; i++)
mem_writeb((PhysPt)(sftptr+sftofs+0x20+i),' ');
if (extlen>3) extlen=3;
for (i=0; i<extlen; i++)
mem_writeb((PhysPt)(sftptr+sftofs+0x28+i),dotpos[i]);
for (i=extlen; i<3; i++)
mem_writeb((PhysPt)(sftptr+sftofs+0x28+i),' ');
} else {
size_t i;
size_t nlen=strlen(filename);
if (nlen>8) nlen=8;
for (i=0; i<nlen; i++)
mem_writeb((PhysPt)(sftptr+sftofs+0x20+i),filename[i]);
for (i=nlen; i<11; i++)
mem_writeb((PhysPt)(sftptr+sftofs+0x20+i),' ');
}
SegSet16(es,RealSeg(sftrealpt));
reg_di=RealOff(sftrealpt+sftofs);
reg_ax=0xc000;
}
return true;
case 0x1607:
if (reg_bx == 0x15) {
switch (reg_cx) {
case 0x0000: // query instance
reg_cx = 0x0001;
reg_dx = 0x50; // dos driver segment
SegSet16(es,0x50); // patch table seg
reg_bx = 0x60; // patch table ofs
return true;
case 0x0001: // set patches
reg_ax = 0xb97c;
reg_bx = (reg_dx & 0x16);
reg_dx = 0xa2ab;
return true;
case 0x0003: // get size of data struc
if (reg_dx==0x0001) {
// CDS size requested
reg_ax = 0xb97c;
reg_dx = 0xa2ab;
reg_cx = 0x000e; // size
}
return true;
case 0x0004: // instanced data
reg_dx = 0; // none
return true;
case 0x0005: // get device driver size
reg_ax = 0;
reg_dx = 0;
return true;
default:
return false;
}
}
else if (reg_bx == 0x18) return true; // idle callout
else return false;
case 0x1680: /* RELEASE CURRENT VIRTUAL MACHINE TIME-SLICE */
//TODO Maybe do some idling but could screw up other systems :)
return true; //So no warning in the debugger anymore
case 0x1689: /* Kernel IDLE CALL */
case 0x168f: /* Close awareness crap */
/* Removing warning */
return true;
case 0x4a01: /* Query free hma space */
case 0x4a02: /* ALLOCATE HMA SPACE */
LOG(LOG_DOSMISC,LOG_WARN)("INT 2f:4a HMA. DOSBox reports none available.");
reg_bx=0; //number of bytes available in HMA or amount successfully allocated
//ESDI=ffff:ffff Location of HMA/Allocated memory
SegSet16(es,0xffff);
reg_di=0xffff;
return true;
case 0x1300:
case 0x1302:
reg_ax=0;
return true;
case 0x1605:
return true;
case 0x1612:
reg_ax=0;
name[0]=1;
name[1]=0;
MEM_BlockWrite(SegPhys(es)+reg_bx,name,0x20);
return true;
case 0x1613: /* Get SYSTEM.DAT path */
strcpy(name,"C:\\WINDOWS\\SYSTEM.DAT");
MEM_BlockWrite(SegPhys(es)+reg_di,name,(Bitu)(strlen(name)+1));
reg_ax=0;
reg_cx=strlen(name);
return true;
case 0x4a16: /* Open bootlog */
return true;
case 0x4a17: /* Write bootlog */
MEM_StrCopy(SegPhys(ds)+reg_dx,name,255);
LOG(LOG_DOSMISC,LOG_NORMAL)("BOOTLOG: %s\n",name);
return true;
case 0x4a33: /* Check MS-DOS Version 7 */
reg_ax=0;
return true;
}
return false;
}