Bitu Program::GetEnvCount(void) {
PhysPt env_read=PhysMake(psp->GetEnvironment(),0);
Bitu num=0;
while (mem_readb(env_read)!=0) {
for (;mem_readb(env_read);env_read++) {};
env_read++;
num++;
}
return num;
}
Bit16u DOS_PSP::FindFreeFileEntry(void) {
PhysPt files=Real2Phys(sGet(sPSP,file_table));
for (Bit16u i=0;i<sGet(sPSP,max_files);i++) {
if (mem_readb(files+i)==0xff) return i;
}
return 0xff;
}
Bit16u DOS_PSP::FindEntryByHandle(Bit8u handle) {
PhysPt files=Real2Phys(sGet(sPSP,file_table));
for (Bit16u i=0;i<sGet(sPSP,max_files);i++) {
if (mem_readb(files+i)==handle) return i;
}
return 0xFF;
}
Bitu Program::GetEnvCount(void) {
PhysPt env_base,env_fence,env_scan;
Bitu num = 0;
if (dos_kernel_disabled) {
LOG_MSG("BUG: Program::GetEnvCount() called with DOS kernel disabled (such as OS boot).\n");
return 0;
}
if (!LocateEnvironmentBlock(env_base,env_fence,psp->GetEnvironment())) {
LOG_MSG("Warning: GetEnvCount() was not able to locate the program's environment block\n");
return false;
}
env_scan = env_base;
while (env_scan < env_fence) {
/* "NAME" + "=" + "VALUE" + "\0" */
/* end of the block is a NULL string meaning a \0 follows the last string's \0 */
if (mem_readb(env_scan++) == 0) break; /* normal end of block */
num++;
if (!EnvPhys_ScanUntilNextString(env_scan,env_fence)) break;
}
return num;
}
bool Program::GetEnvNum(Bitu want_num,std::string & result) {
PhysPt env_base,env_fence,env_scan;
Bitu num = 0;
if (dos_kernel_disabled) {
LOG_MSG("BUG: Program::GetEnvNum() called with DOS kernel disabled (such as OS boot).\n");
return false;
}
if (!LocateEnvironmentBlock(env_base,env_fence,psp->GetEnvironment())) {
LOG_MSG("Warning: GetEnvCount() was not able to locate the program's environment block\n");
return false;
}
result.clear();
env_scan = env_base;
while (env_scan < env_fence) {
/* "NAME" + "=" + "VALUE" + "\0" */
/* end of the block is a NULL string meaning a \0 follows the last string's \0 */
if (mem_readb(env_scan) == 0) break; /* normal end of block */
if (num == want_num) {
EnvPhys_StrCpyToCPPString(result,env_scan,env_fence);
return true;
}
num++;
if (!EnvPhys_ScanUntilNextString(env_scan,env_fence)) break;
}
return false;
}
static Bitu PROGRAMS_Handler(void) {
/* This sets up everything for a program start up call */
Bitu size=sizeof(Bit8u);
Bit8u index;
/* Read the index from program code in memory */
PhysPt reader=PhysMake(dos.psp(),256+sizeof(exe_block));
HostPt writer=(HostPt)&index;
for (;size>0;size--) *writer++=mem_readb(reader++);
Program * new_program = NULL;
if (index > internal_progs.size()) E_Exit("something is messing with the memory");
InternalProgramEntry *ipe = internal_progs[index];
if (ipe == NULL) E_Exit("Attempt to run internal program slot with nothing allocated");
if (ipe->main == NULL) return CBRET_NONE;
PROGRAMS_Main * handler = internal_progs[index]->main;
(*handler)(&new_program);
try { /* "BOOT" can throw an exception (int(2)) */
new_program->Run();
delete new_program;
}
catch (...) { /* well if it happened, free the program anyway to avert memory leaks */
delete new_program;
throw; /* pass it on */
}
return CBRET_NONE;
}
void DOS_FreeProcessMemory(unsigned short pspseg) {
while (1) {
if (pspseg)
foo ();
char *addr = (char*)(&((sMCB*)0)->type);
if (mem_readb(addr)==0x5a) break;
}
};
Bit8u VESA_SetPalette(PhysPt data,Bitu index,Bitu count) {
//Structure is (vesa 3.0 doc): blue,green,red,alignment
Bit8u r,g,b;
if (index>255) return VESA_FAIL;
if (index+count>256) return VESA_FAIL;
IO_Write(0x3c8,(Bit8u)index);
while (count) {
b = mem_readb(data++);
g = mem_readb(data++);
r = mem_readb(data++);
data++;
IO_Write(0x3c9,r);
IO_Write(0x3c9,g);
IO_Write(0x3c9,b);
count--;
}
return VESA_SUCCESS;
}
static void dma(uint8_t value)
{
int addr = value << 8;
if (value > 0xF1)
return;
for (int i = 0; i < 160; i++)
mem_writeb(0xFE00 + i, mem_readb(addr + i));
}
bool EnvPhys_ScanUntilNextString(PhysPt &env_scan,PhysPt env_fence) {
/* scan until end of block or NUL */
while (env_scan < env_fence && mem_readb(env_scan) != 0) env_scan++;
/* if we hit the fence, that's something to warn about. */
if (env_scan >= env_fence) {
LOG_MSG("Warning: environment string scan hit the end of the environment block without terminating NUL\n");
return false;
}
/* if we stopped at anything other than a NUL, that's something to warn about */
if (mem_readb(env_scan) != 0) {
LOG_MSG("Warning: environment string scan scan stopped without hitting NUL\n");
return false;
}
env_scan++; /* skip NUL */
return true;
}
static void VGA_CopyRow(Bit8u cleft,Bit8u cright,Bit8u rold,Bit8u rnew,PhysPt base) {
PhysPt src,dest;Bitu copy;
Bit8u cheight = real_readb(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT);
dest=base+8u*((CurMode->twidth*rnew)*cheight+cleft);
src=base+8u*((CurMode->twidth*rold)*cheight+cleft);
Bitu nextline=8u*(Bitu)CurMode->twidth;
Bitu rowsize=8u*(Bitu)(cright-cleft);
copy=cheight;
for (;copy>0;copy--) {
for (Bitu x=0;x<rowsize;x++) mem_writeb(dest+x,mem_readb(src+x));
dest+=nextline;src+=nextline;
}
}
Bits CPU_Core_Normal_Run(void) {
while (CPU_Cycles-->0) {
LOADIP;
core.opcode_index=cpu.code.big*0x200;
core.prefixes=cpu.code.big;
core.ea_table=&EATable[cpu.code.big*256];
BaseDS=SegBase(ds);
BaseSS=SegBase(ss);
core.base_val_ds=ds;
#if C_DEBUG
#if C_HEAVY_DEBUG
if (DEBUG_HeavyIsBreakpoint()) {
FillFlags();
return debugCallback;
};
#endif
cycle_count++;
#endif
restart_opcode:
switch (core.opcode_index+Fetchb()) {
#include "core_normal/prefix_none.h"
#include "core_normal/prefix_0f.h"
#include "core_normal/prefix_66.h"
#include "core_normal/prefix_66_0f.h"
default:
illegal_opcode:
#if C_DEBUG
{
Bitu len=(GETIP-reg_eip);
LOADIP;
if (len>16) len=16;
char tempcode[16*2+1];char * writecode=tempcode;
for (;len>0;len--) {
sprintf(writecode,"%02X",mem_readb(core.cseip++));
writecode+=2;
}
LOG(LOG_CPU,LOG_NORMAL)("Illegal/Unhandled opcode %s",tempcode);
}
#endif
CPU_Exception(6,0);
continue;
}
SAVEIP;
}
FillFlags();
return CBRET_NONE;
decode_end:
SAVEIP;
FillFlags();
return CBRET_NONE;
}
int EnvPhys_StrCmp(PhysPt es,PhysPt ef,const char *ls) {
unsigned char a,b;
while (1) {
a = mem_readb(es++);
b = (unsigned char)(*ls++);
if (a == '=') a = 0;
if (a == 0 && b == 0) break;
if (a == b) continue;
return (int)a - (int)b;
}
return 0;
}
//===========================================================================
BOOL MemExportar(WORD EndInicial, WORD EndFinal)
{
#ifdef _WINDOWS
OPENFILENAME ofn;
#endif // _WINDOWS
FILE *Arquivo;
char *Buffer;
DWORD TamMem;
char directory[MAX_PATH] = "";
char filename[MAX_PATH] = "";
unsigned int c;
TamMem = EndFinal - EndInicial + 1;
Buffer = (char *)malloc(TamMem);
for (c = 0; c < TamMem; c++)
Buffer[c] = mem_readb(EndInicial + c, 0);
//memcpy((void *)Buffer, (const void*)(mem+EndInicial), (size_t)(TamMem));
#ifdef _WINDOWS
memset(&ofn, 0, sizeof(OPENFILENAME));
ofn.lStructSize = sizeof(OPENFILENAME);
ofn.hwndOwner = (HWND)framewindow;
ofn.hInstance = (HINSTANCE)instance;
ofn.lpstrFilter = "Todos os Arquivos\0*.*\0";
ofn.lpstrFile = filename;
ofn.nMaxFile = MAX_PATH;
ofn.lpstrInitialDir = directory;
ofn.Flags = OFN_OVERWRITEPROMPT;
ofn.lpstrTitle = "Escolha o Arquivo";
if (GetSaveFileName(&ofn))
#else // _WINDOWS
if (0)
#endif // _WINDOWS
{
Arquivo = fopen(filename, "wb");
if (!Arquivo)
{
FrameMostraMensagemErro("Erro ao criar arquivo!");
return -1;
}
if (!fwrite(Buffer, TamMem, 1, Arquivo))
{
FrameMostraMensagemErro("Erro ao criar arquivo!");
fclose(Arquivo);
return -1;
}
fclose(Arquivo);
return 0;
}
return -1;
}
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;
}
Program::Program() {
/* Find the command line and setup the PSP */
psp = new DOS_PSP(dos.psp());
/* Scan environment for filename */
PhysPt envscan=PhysMake(psp->GetEnvironment(),0);
while (mem_readb(envscan)) envscan+=mem_strlen(envscan)+1;
envscan+=3;
CommandTail tail;
MEM_BlockRead(PhysMake(dos.psp(),128),&tail,128);
if (tail.count<127) tail.buffer[tail.count]=0;
else tail.buffer[126]=0;
char filename[256+1];
MEM_StrCopy(envscan,filename,256);
cmd = new CommandLine(filename,tail.buffer);
}
static Bitu PROGRAMS_Handler(void) {
/* This sets up everything for a program start up call */
Bitu size=sizeof(Bit8u);
Bit8u index;
/* Read the index from program code in memory */
PhysPt reader=PhysMake(dos.psp(),256+sizeof(exe_block));
HostPt writer=(HostPt)&index;
for (;size>0;size--) *writer++=mem_readb(reader++);
Program * new_program;
if(index > internal_progs.size()) E_Exit("something is messing with the memory");
PROGRAMS_Main * handler = internal_progs[index];
(*handler)(&new_program);
new_program->Run();
delete new_program;
return CBRET_NONE;
}
//--------------------------------------------------------------------------
ssize_t idaapi dosbox_debmod_t::dbg_read_memory(ea_t ea, void *buffer, size_t size)
{
int i;
PhysPt addr = (PhysPt)ea;
uchar *buf;
buf = (uchar *)buffer;
//addr = addr + r_debug.base;
for(i=0;i<size;i++)
{
buf[i] = mem_readb(addr);
// printf("%02x,",buf[i]);
addr++;
}
printf("dbg_read_memory @ %x, size=%d\n", ea, size);
return size;
}
static void EGA16_CopyRow(Bit8u cleft,Bit8u cright,Bit8u rold,Bit8u rnew,PhysPt base) {
PhysPt src,dest;Bitu copy;
Bit8u cheight = real_readb(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT);
dest=base+(CurMode->twidth*rnew)*cheight+cleft;
src=base+(CurMode->twidth*rold)*cheight+cleft;
Bitu nextline=(Bitu)CurMode->twidth;
/* Setup registers correctly */
IO_Write(0x3ce,5);IO_Write(0x3cf,1); /* Memory transfer mode */
IO_Write(0x3c4,2);IO_Write(0x3c5,0xf); /* Enable all Write planes */
/* Do some copying */
Bitu rowsize=(Bitu)(cright-cleft);
copy=cheight;
for (;copy>0;copy--) {
for (Bitu x=0;x<rowsize;x++) mem_writeb(dest+x,mem_readb(src+x));
dest+=nextline;src+=nextline;
}
/* Restore registers */
IO_Write(0x3ce,5);IO_Write(0x3cf,0); /* Normal transfer mode */
}
void EnvPhys_StrCpyToCPPString(std::string &result,PhysPt &env_scan,PhysPt env_fence) {
char tmp[512],*w=tmp,*wf=tmp+sizeof(tmp)-1,c;
result.clear();
while (env_scan < env_fence) {
if ((c=(char)mem_readb(env_scan++)) == 0) break;
if (w >= wf) {
*w = 0;
result += tmp;
w = tmp;
}
assert(w < wf);
*w++ = c;
}
if (w != tmp) {
*w = 0;
result += tmp;
}
}
//Does way to much. Many things should be moved to mouse reset one day
void Mouse_NewVideoMode(void) {
mouse.inhibit_draw=false;
/* Get the correct resolution from the current video mode */
Bit8u mode=mem_readb(BIOS_VIDEO_MODE);
if(mode == mouse.mode) {LOG(LOG_MOUSE,LOG_NORMAL)("New video is the same as the old"); /*return;*/}
switch (mode) {
case 0x00:
case 0x01:
case 0x02:
case 0x03: {
Bitu rows=real_readb(BIOSMEM_SEG,BIOSMEM_NB_ROWS);
if ((rows==0) || (rows>250)) rows=25-1;
mouse.max_y=8*(rows+1)-1;
break;
}
case 0x04:
case 0x05:
case 0x06:
case 0x07:
case 0x08:
case 0x09:
case 0x0a:
case 0x0d:
case 0x0e:
case 0x13:
mouse.max_y=199;
break;
case 0x0f:
case 0x10:
mouse.max_y=349;
break;
case 0x11:
case 0x12:
mouse.max_y=479;
break;
default:
LOG(LOG_MOUSE,LOG_ERROR)("Unhandled videomode %X on reset",mode);
mouse.inhibit_draw=true;
return;
}
mouse.mode = mode;
mouse.hidden = 1;
mouse.max_x = 639;
mouse.min_x = 0;
mouse.min_y = 0;
mouse.granMask = (mode == 0x0d || mode == 0x13) ? 0xfffe : 0xffff;
mouse.events = 0;
mouse.timer_in_progress = false;
PIC_RemoveEvents(MOUSE_Limit_Events);
mouse.hotx = 0;
mouse.hoty = 0;
mouse.background = false;
mouse.screenMask = defaultScreenMask;
mouse.cursorMask = defaultCursorMask;
mouse.textAndMask= defaultTextAndMask;
mouse.textXorMask= defaultTextXorMask;
mouse.language = 0;
mouse.page = 0;
mouse.doubleSpeedThreshold = 64;
mouse.updateRegion_x[0] = 1;
mouse.updateRegion_y[0] = 1;
mouse.updateRegion_x[1] = 1;
mouse.updateRegion_y[1] = 1;
mouse.cursorType = 0;
mouse.enabled=true;
mouse.oldhidden=1;
oldmouseX = static_cast<Bit16s>(mouse.x);
oldmouseY = static_cast<Bit16s>(mouse.y);
}
Bits CPU_Core_Prefetch_Run(void) {
bool invalidate_pq=false;
while (CPU_Cycles-->0) {
if (invalidate_pq) {
pq_valid=false;
invalidate_pq=false;
}
LOADIP;
core.opcode_index=cpu.code.big*0x200;
core.prefixes=cpu.code.big;
core.ea_table=&EATable[cpu.code.big*256];
BaseDS=SegBase(ds);
BaseSS=SegBase(ss);
core.base_val_ds=ds;
#if C_DEBUG
#if C_HEAVY_DEBUG
if (DEBUG_HeavyIsBreakpoint()) {
FillFlags();
return debugCallback;
};
#endif
cycle_count++;
#endif
restart_opcode:
Bit8u next_opcode=Fetchb();
invalidate_pq=false;
if (core.opcode_index&OPCODE_0F) invalidate_pq=true;
else switch (next_opcode) {
case 0x70: case 0x71: case 0x72: case 0x73:
case 0x74: case 0x75: case 0x76: case 0x77:
case 0x78: case 0x79: case 0x7a: case 0x7b:
case 0x7c: case 0x7d: case 0x7e: case 0x7f: // jcc
case 0x9a: // call
case 0xc2: case 0xc3: // retn
case 0xc8: // enter
case 0xc9: // leave
case 0xca: case 0xcb: // retf
case 0xcc: // int3
case 0xcd: // int
case 0xce: // into
case 0xcf: // iret
case 0xe0: // loopnz
case 0xe1: // loopz
case 0xe2: // loop
case 0xe3: // jcxz
case 0xe8: // call
case 0xe9: case 0xea: case 0xeb: // jmp
case 0xff:
invalidate_pq=true;
break;
default:
break;
}
switch (core.opcode_index+next_opcode) {
#include "core_normal/prefix_none.h"
#include "core_normal/prefix_0f.h"
#include "core_normal/prefix_66.h"
#include "core_normal/prefix_66_0f.h"
default:
illegal_opcode:
#if C_DEBUG
{
bool ignore=false;
Bitu len=(GETIP-reg_eip);
LOADIP;
if (len>16) len=16;
char tempcode[16*2+1];char * writecode=tempcode;
if (ignore_opcode_63 && mem_readb(core.cseip) == 0x63)
ignore = true;
for (;len>0;len--) {
sprintf(writecode,"%02X",mem_readb(core.cseip++));
writecode+=2;
}
if (!ignore)
LOG(LOG_CPU,LOG_NORMAL)("Illegal/Unhandled opcode %s",tempcode);
}
#endif
CPU_Exception(6,0);
invalidate_pq=true;
continue;
}
SAVEIP;
}
FillFlags();
return CBRET_NONE;
decode_end:
SAVEIP;
FillFlags();
return CBRET_NONE;
}
void mem_strcpy(PhysPt dest,PhysPt src) {
Bit8u r;
while ( (r = mem_readb(src++)) ) mem_writeb_inline(dest++,r);
mem_writeb_inline(dest,0);
}
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_FCB::GetAttr(Bit8u& attr) {
if(extended) attr=mem_readb(pt - 1);
}
/* NTS: "entry" string must have already been converted to uppercase */
bool Program::SetEnv(const char * entry,const char * new_string) {
PhysPt env_base,env_fence,env_scan;
size_t nsl = 0,el = 0,needs;
if (dos_kernel_disabled) {
LOG_MSG("BUG: Program::SetEnv() called with DOS kernel disabled (such as OS boot).\n");
return false;
}
if (!LocateEnvironmentBlock(env_base,env_fence,psp->GetEnvironment())) {
LOG_MSG("Warning: SetEnv() was not able to locate the program's environment block\n");
return false;
}
el = strlen(entry);
if (*new_string != 0) nsl = strlen(new_string);
needs = nsl+1+el+1+1; /* entry + '=' + new_string + '\0' + '\0' */
/* look for the variable in the block. break the loop if found */
env_scan = env_base;
while (env_scan < env_fence) {
if (mem_readb(env_scan) == 0) break;
if (EnvPhys_StrCmp(env_scan,env_fence,entry) == 0) {
/* found it. remove by shifting the rest of the environment block over */
int zeroes=0;
PhysPt s,d;
/* before we remove it: is there room for the new value? */
if (nsl != 0) {
if ((env_scan+needs) > env_fence) {
LOG_MSG("Program::SetEnv() error, insufficient room for environment variable %s=%s\n",entry,new_string);
return false;
}
}
s = env_scan; d = env_scan;
while (s < env_fence && mem_readb(s) != 0) s++;
if (s < env_fence && mem_readb(s) == 0) s++;
while (s < env_fence) {
unsigned char b = mem_readb(s++);
if (b == 0) zeroes++;
else zeroes=0;
mem_writeb(d++,b);
if (zeroes >= 2) break; /* two consecutive zeros means the end of the block */
}
}
else {
/* scan to next string */
if (!EnvPhys_ScanUntilNextString(env_scan,env_fence)) break;
}
}
/* At this point, env_scan points to the first byte beyond the block */
/* add the string to the end of the block */
if (*new_string != 0) {
if ((env_scan+needs) > env_fence) {
LOG_MSG("Program::SetEnv() error, insufficient room for environment variable %s=%s\n",entry,new_string);
return false;
}
assert(env_scan < env_fence);
for (const char *s=entry;*s != 0;) mem_writeb(env_scan++,*s++);
mem_writeb(env_scan++,'=');
assert(env_scan < env_fence);
for (const char *s=new_string;*s != 0;) mem_writeb(env_scan++,*s++);
mem_writeb(env_scan++,0);
mem_writeb(env_scan++,0);
assert(env_scan < env_fence);
}
return true;
}
Bit8u DOS_PSP::GetFileHandle(Bit16u index) {
if (index>=sGet(sPSP,max_files)) return 0xff;
PhysPt files=Real2Phys(sGet(sPSP,file_table));
return mem_readb(files+index);
}
bool INT10_VideoState_Save(Bitu state,RealPt buffer) {
Bitu ct;
if ((state&7)==0) return false;
Bitu base_seg=RealSeg(buffer);
Bitu base_dest=RealOff(buffer)+0x20;
if (state&1) {
real_writew(base_seg,RealOff(buffer),base_dest);
Bit16u crt_reg=real_readw(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS);
real_writew(base_seg,base_dest+0x40,crt_reg);
real_writeb(base_seg,base_dest+0x00,IO_ReadB(0x3c4));
real_writeb(base_seg,base_dest+0x01,IO_ReadB(0x3d4));
real_writeb(base_seg,base_dest+0x02,IO_ReadB(0x3ce));
IO_ReadB(crt_reg+6);
real_writeb(base_seg,base_dest+0x03,IO_ReadB(0x3c0));
real_writeb(base_seg,base_dest+0x04,IO_ReadB(0x3ca));
// sequencer
for (ct=1; ct<5; ct++) {
IO_WriteB(0x3c4,ct);
real_writeb(base_seg,base_dest+0x04+ct,IO_ReadB(0x3c5));
}
real_writeb(base_seg,base_dest+0x09,IO_ReadB(0x3cc));
// crt controller
for (ct=0; ct<0x19; ct++) {
IO_WriteB(crt_reg,ct);
real_writeb(base_seg,base_dest+0x0a+ct,IO_ReadB(crt_reg+1));
}
// attr registers
for (ct=0; ct<4; ct++) {
IO_ReadB(crt_reg+6);
IO_WriteB(0x3c0,0x10+ct);
real_writeb(base_seg,base_dest+0x33+ct,IO_ReadB(0x3c1));
}
// graphics registers
for (ct=0; ct<9; ct++) {
IO_WriteB(0x3ce,ct);
real_writeb(base_seg,base_dest+0x37+ct,IO_ReadB(0x3cf));
}
// save some registers
IO_WriteB(0x3c4,2);
Bit8u crtc_2=IO_ReadB(0x3c5);
IO_WriteB(0x3c4,4);
Bit8u crtc_4=IO_ReadB(0x3c5);
IO_WriteB(0x3ce,6);
Bit8u gfx_6=IO_ReadB(0x3cf);
IO_WriteB(0x3ce,5);
Bit8u gfx_5=IO_ReadB(0x3cf);
IO_WriteB(0x3ce,4);
Bit8u gfx_4=IO_ReadB(0x3cf);
// reprogram for full access to plane latches
IO_WriteW(0x3c4,0x0f02);
IO_WriteW(0x3c4,0x0704);
IO_WriteW(0x3ce,0x0406);
IO_WriteW(0x3ce,0x0105);
mem_writeb(0xaffff,0);
for (ct=0; ct<4; ct++) {
IO_WriteW(0x3ce,0x0004+ct*0x100);
real_writeb(base_seg,base_dest+0x42+ct,mem_readb(0xaffff));
}
// restore registers
IO_WriteW(0x3ce,0x0004|(gfx_4<<8));
IO_WriteW(0x3ce,0x0005|(gfx_5<<8));
IO_WriteW(0x3ce,0x0006|(gfx_6<<8));
IO_WriteW(0x3c4,0x0004|(crtc_4<<8));
IO_WriteW(0x3c4,0x0002|(crtc_2<<8));
for (ct=0; ct<0x10; ct++) {
IO_ReadB(crt_reg+6);
IO_WriteB(0x3c0,ct);
real_writeb(base_seg,base_dest+0x23+ct,IO_ReadB(0x3c1));
}
IO_WriteB(0x3c0,0x20);
base_dest+=0x46;
}
if (state&2) {
real_writew(base_seg,RealOff(buffer)+2,base_dest);
real_writeb(base_seg,base_dest+0x00,mem_readb(0x410)&0x30);
for (ct=0; ct<0x1e; ct++) {
real_writeb(base_seg,base_dest+0x01+ct,mem_readb(0x449+ct));
}
for (ct=0; ct<0x07; ct++) {
real_writeb(base_seg,base_dest+0x1f+ct,mem_readb(0x484+ct));
}
real_writed(base_seg,base_dest+0x26,mem_readd(0x48a));
real_writed(base_seg,base_dest+0x2a,mem_readd(0x14)); // int 5
real_writed(base_seg,base_dest+0x2e,mem_readd(0x74)); // int 1d
real_writed(base_seg,base_dest+0x32,mem_readd(0x7c)); // int 1f
real_writed(base_seg,base_dest+0x36,mem_readd(0x10c)); // int 43
base_dest+=0x3a;
}
if (state&4) {
real_writew(base_seg,RealOff(buffer)+4,base_dest);
Bit16u crt_reg=real_readw(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS);
IO_ReadB(crt_reg+6);
IO_WriteB(0x3c0,0x14);
real_writeb(base_seg,base_dest+0x303,IO_ReadB(0x3c1));
Bitu dac_state=IO_ReadB(0x3c7)&1;
Bitu dac_windex=IO_ReadB(0x3c8);
if (dac_state!=0) dac_windex--;
real_writeb(base_seg,base_dest+0x000,dac_state);
real_writeb(base_seg,base_dest+0x001,dac_windex);
real_writeb(base_seg,base_dest+0x002,IO_ReadB(0x3c6));
for (ct=0; ct<0x100; ct++) {
IO_WriteB(0x3c7,ct);
real_writeb(base_seg,base_dest+0x003+ct*3+0,IO_ReadB(0x3c9));
real_writeb(base_seg,base_dest+0x003+ct*3+1,IO_ReadB(0x3c9));
real_writeb(base_seg,base_dest+0x003+ct*3+2,IO_ReadB(0x3c9));
}
IO_ReadB(crt_reg+6);
IO_WriteB(0x3c0,0x20);
base_dest+=0x303;
}
if ((svgaCard==SVGA_S3Trio) && (state&8)) {
real_writew(base_seg,RealOff(buffer)+6,base_dest);
Bit16u crt_reg=real_readw(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS);
IO_WriteB(0x3c4,0x08);
// Bitu seq_8=IO_ReadB(0x3c5);
IO_ReadB(0x3c5);
// real_writeb(base_seg,base_dest+0x00,IO_ReadB(0x3c5));
IO_WriteB(0x3c5,0x06); // unlock s3-specific registers
// sequencer
for (ct=0; ct<0x13; ct++) {
IO_WriteB(0x3c4,0x09+ct);
real_writeb(base_seg,base_dest+0x00+ct,IO_ReadB(0x3c5));
}
// unlock s3-specific registers
IO_WriteW(crt_reg,0x4838);
IO_WriteW(crt_reg,0xa539);
// crt controller
Bitu ct_dest=0x13;
for (ct=0; ct<0x40; ct++) {
if ((ct==0x4a-0x30) || (ct==0x4b-0x30)) {
IO_WriteB(crt_reg,0x45);
IO_ReadB(crt_reg+1);
IO_WriteB(crt_reg,0x30+ct);
real_writeb(base_seg,base_dest+(ct_dest++),IO_ReadB(crt_reg+1));
real_writeb(base_seg,base_dest+(ct_dest++),IO_ReadB(crt_reg+1));
real_writeb(base_seg,base_dest+(ct_dest++),IO_ReadB(crt_reg+1));
} else {
IO_WriteB(crt_reg,0x30+ct);
real_writeb(base_seg,base_dest+(ct_dest++),IO_ReadB(crt_reg+1));
}
}
}
return true;
}
bool INT10_VideoState_Restore(Bitu state,RealPt buffer) {
Bitu ct;
if ((state&7)==0) return false;
Bit16u base_seg=RealSeg(buffer);
Bit16u base_dest;
if (state&1) {
base_dest=real_readw(base_seg,RealOff(buffer));
Bit16u crt_reg=real_readw(base_seg,base_dest+0x40);
// reprogram for full access to plane latches
IO_WriteW(0x3c4,0x0704);
IO_WriteW(0x3ce,0x0406);
IO_WriteW(0x3ce,0x0005);
IO_WriteW(0x3c4,0x0002);
mem_writeb(0xaffff,real_readb(base_seg,base_dest+0x42));
IO_WriteW(0x3c4,0x0102);
mem_writeb(0xaffff,real_readb(base_seg,base_dest+0x43));
IO_WriteW(0x3c4,0x0202);
mem_writeb(0xaffff,real_readb(base_seg,base_dest+0x44));
IO_WriteW(0x3c4,0x0402);
mem_writeb(0xaffff,real_readb(base_seg,base_dest+0x45));
IO_WriteW(0x3c4,0x0f02);
mem_readb(0xaffff);
IO_WriteW(0x3c4,0x0100);
// sequencer
for (ct=1; ct<5; ct++) {
IO_WriteW(0x3c4,ct+(real_readb(base_seg,base_dest+0x04+ct)<<8));
}
IO_WriteB(0x3c2,real_readb(base_seg,base_dest+0x09));
IO_WriteW(0x3c4,0x0300);
IO_WriteW(crt_reg,0x0011);
// crt controller
for (ct=0; ct<0x19; ct++) {
IO_WriteW(crt_reg,ct+(real_readb(base_seg,base_dest+0x0a+ct)<<8));
}
IO_ReadB(crt_reg+6);
// attr registers
for (ct=0; ct<4; ct++) {
IO_WriteB(0x3c0,0x10+ct);
IO_WriteB(0x3c0,real_readb(base_seg,base_dest+0x33+ct));
}
// graphics registers
for (ct=0; ct<9; ct++) {
IO_WriteW(0x3ce,ct+(real_readb(base_seg,base_dest+0x37+ct)<<8));
}
IO_WriteB(crt_reg+6,real_readb(base_seg,base_dest+0x04));
IO_ReadB(crt_reg+6);
// attr registers
for (ct=0; ct<0x10; ct++) {
IO_WriteB(0x3c0,ct);
IO_WriteB(0x3c0,real_readb(base_seg,base_dest+0x23+ct));
}
IO_WriteB(0x3c4,real_readb(base_seg,base_dest+0x00));
IO_WriteB(0x3d4,real_readb(base_seg,base_dest+0x01));
IO_WriteB(0x3ce,real_readb(base_seg,base_dest+0x02));
IO_ReadB(crt_reg+6);
IO_WriteB(0x3c0,real_readb(base_seg,base_dest+0x03));
}
if (state&2) {
base_dest=real_readw(base_seg,RealOff(buffer)+2);
mem_writeb(0x410,(mem_readb(0x410)&0xcf) | real_readb(base_seg,base_dest+0x00));
for (ct=0; ct<0x1e; ct++) {
mem_writeb(0x449+ct,real_readb(base_seg,base_dest+0x01+ct));
}
for (ct=0; ct<0x07; ct++) {
mem_writeb(0x484+ct,real_readb(base_seg,base_dest+0x1f+ct));
}
mem_writed(0x48a,real_readd(base_seg,base_dest+0x26));
mem_writed(0x14,real_readd(base_seg,base_dest+0x2a)); // int 5
mem_writed(0x74,real_readd(base_seg,base_dest+0x2e)); // int 1d
mem_writed(0x7c,real_readd(base_seg,base_dest+0x32)); // int 1f
mem_writed(0x10c,real_readd(base_seg,base_dest+0x36)); // int 43
}
if (state&4) {
base_dest=real_readw(base_seg,RealOff(buffer)+4);
Bit16u crt_reg=real_readw(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS);
IO_WriteB(0x3c6,real_readb(base_seg,base_dest+0x002));
for (ct=0; ct<0x100; ct++) {
IO_WriteB(0x3c8,ct);
IO_WriteB(0x3c9,real_readb(base_seg,base_dest+0x003+ct*3+0));
IO_WriteB(0x3c9,real_readb(base_seg,base_dest+0x003+ct*3+1));
IO_WriteB(0x3c9,real_readb(base_seg,base_dest+0x003+ct*3+2));
}
IO_ReadB(crt_reg+6);
IO_WriteB(0x3c0,0x14);
IO_WriteB(0x3c0,real_readb(base_seg,base_dest+0x303));
Bitu dac_state=real_readb(base_seg,base_dest+0x000);
if (dac_state==0) {
IO_WriteB(0x3c8,real_readb(base_seg,base_dest+0x001));
} else {
IO_WriteB(0x3c7,real_readb(base_seg,base_dest+0x001));
}
}
if ((svgaCard==SVGA_S3Trio) && (state&8)) {
base_dest=real_readw(base_seg,RealOff(buffer)+6);
Bit16u crt_reg=real_readw(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS);
Bitu seq_idx=IO_ReadB(0x3c4);
IO_WriteB(0x3c4,0x08);
// Bitu seq_8=IO_ReadB(0x3c5);
IO_ReadB(0x3c5);
// real_writeb(base_seg,base_dest+0x00,IO_ReadB(0x3c5));
IO_WriteB(0x3c5,0x06); // unlock s3-specific registers
// sequencer
for (ct=0; ct<0x13; ct++) {
IO_WriteW(0x3c4,(0x09+ct)+(real_readb(base_seg,base_dest+0x00+ct)<<8));
}
IO_WriteB(0x3c4,seq_idx);
// Bitu crtc_idx=IO_ReadB(0x3d4);
// unlock s3-specific registers
IO_WriteW(crt_reg,0x4838);
IO_WriteW(crt_reg,0xa539);
// crt controller
Bitu ct_dest=0x13;
for (ct=0; ct<0x40; ct++) {
if ((ct==0x4a-0x30) || (ct==0x4b-0x30)) {
IO_WriteB(crt_reg,0x45);
IO_ReadB(crt_reg+1);
IO_WriteB(crt_reg,0x30+ct);
IO_WriteB(crt_reg,real_readb(base_seg,base_dest+(ct_dest++)));
} else {
IO_WriteW(crt_reg,(0x30+ct)+(real_readb(base_seg,base_dest+(ct_dest++))<<8));
}
}
// mmio
/* IO_WriteB(crt_reg,0x40);
Bitu sysval1=IO_ReadB(crt_reg+1);
IO_WriteB(crt_reg+1,sysval|1);
IO_WriteB(crt_reg,0x53);
Bitu sysva2=IO_ReadB(crt_reg+1);
IO_WriteB(crt_reg+1,sysval2|0x10);
real_writew(0xa000,0x8128,0xffff);
IO_WriteB(crt_reg,0x40);
IO_WriteB(crt_reg,sysval1);
IO_WriteB(crt_reg,0x53);
IO_WriteB(crt_reg,sysval2);
IO_WriteB(crt_reg,crtc_idx); */
}
return true;
}
static inline Bit16u LoadMw(Bitu off) {
if (last_ea86_offset == 0xffff)
return (mem_readb(off) | (mem_readb(off-0xffff) << 8));
return mem_readw(off);
}
