Bit8u DOS_FCBWrite(Bit16u seg,Bit16u offset,Bit16u recno) {
DOS_FCB fcb(seg,offset);
Bit8u fhandle,cur_rec;Bit16u cur_block,rec_size;
fcb.GetSeqData(fhandle,rec_size);
if (fhandle==0xff && rec_size!=0) {
if (!DOS_FCBOpen(seg,offset)) return FCB_READ_NODATA;
LOG(LOG_FCB,LOG_WARN)("Reopened closed FCB");
fcb.GetSeqData(fhandle,rec_size);
}
fcb.GetRecord(cur_block,cur_rec);
Bit32u pos=((cur_block*128)+cur_rec)*rec_size;
if (!DOS_SeekFile(fhandle,&pos,DOS_SEEK_SET)) return FCB_ERR_WRITE;
MEM_BlockRead(Real2Phys(dos.dta())+recno*rec_size,dos_copybuf,rec_size);
Bit16u towrite=rec_size;
if (!DOS_WriteFile(fhandle,dos_copybuf,&towrite)) return FCB_ERR_WRITE;
Bit32u size;Bit16u date,time;
fcb.GetSizeDateTime(size,date,time);
if (pos+towrite>size) size=pos+towrite;
//time doesn't keep track of endofday
date = DOS_PackDate(dos.date.year,dos.date.month,dos.date.day);
Bit32u ticks = mem_readd(BIOS_TIMER);
Bit32u seconds = (ticks*10)/182;
Bit16u hour = (Bit16u)(seconds/3600);
Bit16u min = (Bit16u)((seconds % 3600)/60);
Bit16u sec = (Bit16u)(seconds % 60);
time = DOS_PackTime(hour,min,sec);
Bit8u temp=RealHandle(fhandle);
Files[temp]->time=time;
Files[temp]->date=date;
fcb.SetSizeDateTime(size,date,time);
if (++cur_rec>127) { cur_block++;cur_rec=0; }
fcb.SetRecord(cur_block,cur_rec);
return FCB_SUCCESS;
}
Bit8u DOS_FCBIncreaseSize(Bit16u seg,Bit16u offset) {
DOS_FCB fcb(seg,offset);
Bit8u fhandle,cur_rec;Bit16u cur_block,rec_size;
fcb.GetSeqData(fhandle,rec_size);
fcb.GetRecord(cur_block,cur_rec);
Bit32u pos=((cur_block*128)+cur_rec)*rec_size;
if (!DOS_SeekFile(fhandle,&pos,DOS_SEEK_SET)) return FCB_ERR_WRITE;
Bit16u towrite=0;
if (!DOS_WriteFile(fhandle,dos_copybuf,&towrite)) return FCB_ERR_WRITE;
Bit32u size;Bit16u date,time;
fcb.GetSizeDateTime(size,date,time);
if (pos+towrite>size) size=pos+towrite;
//time doesn't keep track of endofday
date = DOS_PackDate(dos.date.year,dos.date.month,dos.date.day);
Bit32u ticks = mem_readd(BIOS_TIMER);
Bit32u seconds = (ticks*10)/182;
Bit16u hour = (Bit16u)(seconds/3600);
Bit16u min = (Bit16u)((seconds % 3600)/60);
Bit16u sec = (Bit16u)(seconds % 60);
time = DOS_PackTime(hour,min,sec);
Bit8u temp=RealHandle(fhandle);
Files[temp]->time=time;
Files[temp]->date=date;
fcb.SetSizeDateTime(size,date,time);
fcb.SetRecord(cur_block,cur_rec);
return FCB_SUCCESS;
}
bool DOS_DuplicateEntry(Bit16u entry,Bit16u * newentry) {
// Dont duplicate console handles
/* if (entry<=STDPRN) {
*newentry = entry;
return true;
};
*/
Bit8u handle=RealHandle(entry);
if (handle>=DOS_FILES) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
};
if (!Files[handle] || !Files[handle]->IsOpen()) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
};
DOS_PSP psp(dos.psp());
*newentry = psp.FindFreeFileEntry();
if (*newentry==0xff) {
DOS_SetError(DOSERR_TOO_MANY_OPEN_FILES);
return false;
}
Files[handle]->AddRef();
psp.SetFileHandle(*newentry,handle);
return true;
}
void BasicHandler::Run()
{
BeforeHandle();
RealHandle(m_request_data, &m_response_data);
AfterHandler();
m_done->Run();
}
bool DOS_GetSTDINStatus(void)
{
Bit32u handle = RealHandle(STDIN);
if (handle == 0xFF)
return false;
if (Files[handle] && (Files[handle]->GetInformation() & 64))
return false;
return true;
}
bool DOS_FlushFile(Bit16u entry)
{
Bit32u handle = RealHandle(entry);
if (handle >= DOS_FILES || !Files[handle])
{
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
}
return true;
}
bool DOS_LockFile(Bit16u entry, Bit8u mode, Bit32u pos, Bit32u size)
{
Bit32u handle = RealHandle(entry);
if (handle >= DOS_FILES || !Files[handle])
{
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
}
return Files[handle]->LockFile(mode, pos, size);
}
bool DOS_SeekFile(Bit16u entry, Bit32u* pos, Bit32u type)
{
Bit32u handle = RealHandle(entry);
if (handle >= DOS_FILES || !Files[handle])
{
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
}
return Files[handle]->Seek(pos, type);
}
bool DOS_ReadFile(Bit16u entry, Bit8u* data, Bit16u* amount)
{
Bit32u handle = RealHandle(entry);
if (handle >= DOS_FILES || !Files[handle])
{
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
}
return Files[handle]->Read(data, amount);
}
bool DOS_SeekFile(Bit16u entry,Bit32u * pos,Bit32u type,bool fcb) {
Bit32u handle = fcb?entry:RealHandle(entry);
if (handle>=DOS_FILES) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
};
if (!Files[handle] || !Files[handle]->IsOpen()) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
};
return Files[handle]->Seek(pos,type);
}
bool DOS_ForceDuplicateEntry(Bit16u entry, Bit16u newentry)
{
if (entry == newentry)
{
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
}
Bit8u orig = RealHandle(entry);
if (orig >= DOS_FILES || !Files[orig])
{
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
}
Bit8u newone = RealHandle(newentry);
if (newone < DOS_FILES && Files[newone])
DOS_CloseFile(newentry);
DOS_PSP psp(dos.psp());
Files[orig]->AddRef();
psp.SetFileHandle(newentry, orig);
return true;
}
bool DOS_FlushFile(Bit16u entry) {
Bit32u handle=RealHandle(entry);
if (handle>=DOS_FILES) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
};
if (!Files[handle] || !Files[handle]->IsOpen()) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
};
LOG(LOG_DOSMISC,LOG_NORMAL)("FFlush used.");
return true;
}
bool DOS_GetFileDate(Bit16u entry, Bit16u* otime, Bit16u* odate)
{
Bit32u handle = RealHandle(entry);
if (handle >= DOS_FILES || !Files[handle])
{
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
}
Files[handle]->UpdateDateTimeFromHost();
*otime = Files[handle]->time;
*odate = Files[handle]->date;
return true;
}
bool DOS_FCBGetFileSize(Bit16u seg,Bit16u offset) {
char shortname[DOS_PATHLENGTH];Bit16u entry;Bit8u handle;Bit16u rec_size;
DOS_FCB fcb(seg,offset);
fcb.GetName(shortname);
if (!DOS_OpenFile(shortname,OPEN_READ,&entry)) return false;
handle = RealHandle(entry);
Bit32u size = 0;
Files[handle]->Seek(&size,DOS_SEEK_END);
DOS_CloseFile(entry);fcb.GetSeqData(handle,rec_size);
Bit32u random=(size/rec_size);
if (size % rec_size) random++;
fcb.SetRandom(random);
return true;
}
void DOS_FCB::FileOpen(Bit8u _fhandle) {
sSave(sFCB,drive,GetDrive()+1);
sSave(sFCB,file_handle,_fhandle);
sSave(sFCB,cur_block,0);
sSave(sFCB,rec_size,128);
// sSave(sFCB,rndm,0); // breaks Jewels of darkness.
Bit8u temp = RealHandle(_fhandle);
Bit32u size = 0;
Files[temp]->Seek(&size,DOS_SEEK_END);
sSave(sFCB,filesize,size);
size = 0;
Files[temp]->Seek(&size,DOS_SEEK_SET);
sSave(sFCB,time,Files[temp]->time);
sSave(sFCB,date,Files[temp]->date);
}
bool DOS_WriteFile(Bit16u entry, Bit8u* data, Bit16u* amount)
{
Bit32u handle = RealHandle(entry);
if (handle >= DOS_FILES || !Files[handle])
{
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
}
/*
if ((Files[handle]->flags & 0x0f) == OPEN_READ)) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
}
*/
return Files[handle]->Write(data, amount);
}
bool DOS_CloseFile(Bit16u entry)
{
Bit32u handle = RealHandle(entry);
if (handle >= DOS_FILES || !Files[handle])
{
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
}
Files[handle]->Close();
DOS_PSP psp(dos. psp());
psp.SetFileHandle(entry, 0xff);
if (Files[handle]->RemoveRef() <= 0)
{
delete Files[handle];
Files[handle] = 0;
}
return true;
}
bool DOS_WriteFile(Bit16u entry,Bit8u * data,Bit16u * amount,bool fcb) {
Bit32u handle = fcb?entry:RealHandle(entry);
if (handle>=DOS_FILES) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
};
if (!Files[handle] || !Files[handle]->IsOpen()) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
};
/*
if ((Files[handle]->flags & 0x0f) == OPEN_READ)) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
}
*/
Bit16u towrite=*amount;
bool ret=Files[handle]->Write(data,&towrite);
*amount=towrite;
return ret;
}
bool DOS_ReadFile(Bit16u entry,Bit8u * data,Bit16u * amount) {
Bit32u handle=RealHandle(entry);
if (handle>=DOS_FILES) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
};
if (!Files[handle] || !Files[handle]->IsOpen()) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
};
/*
if ((Files[handle]->flags & 0x0f) == OPEN_WRITE)) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
}
*/
Bit16u toread=*amount;
bool ret=Files[handle]->Read(data,&toread);
*amount=toread;
return ret;
}
bool DOS_CloseFile(Bit16u entry, bool fcb) {
Bit32u handle = fcb?entry:RealHandle(entry);
if (handle>=DOS_FILES) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
};
if (!Files[handle]) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
};
if (Files[handle]->IsOpen()) {
Files[handle]->Close();
}
DOS_PSP psp(dos.psp());
if (!fcb) psp.SetFileHandle(entry,0xff);
if (Files[handle]->RemoveRef()<=0) {
delete Files[handle];
Files[handle]=0;
}
return true;
}
static Bitu DOS_21Handler(void)
{
if (((reg_ah != 0x50) && (reg_ah != 0x51) && (reg_ah != 0x62) && (reg_ah != 0x64)) && (reg_ah < 0x6c))
if (dos.psp() != 0) // No program loaded yet?
{
DOS_PSP psp(dos.psp());
psp.SetStack(SegOff2dWord(SegValue(ss), reg_sp-18));
psp.FindFreeFileEntry();
}
char name1[DOSNAMEBUF+2+DOS_NAMELENGTH_ASCII];
char name2[DOSNAMEBUF+2+DOS_NAMELENGTH_ASCII];
switch (reg_ah)
{
case 0x00: // Terminate Program
DOS_Terminate(Mem_Lodsw(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 = Mem_Lodsw(0x40, 0);
if (port != 0 && serialPorts[0])
serialPorts[0]->Getchar(®_al);
}
break;
case 0x04: // Write Character to STDAUX
{
Bit16u port = Mem_Lodsw(0x40, 0);
if (port != 0 && serialPorts[0])
serialPorts[0]->Putchar(reg_dl);
}
break;
case 0x05: // Write Character to PRINTER
parallelPorts[0]->Putchar(reg_dl);
break;
case 0x06: // Direct Console Output/Input
if (reg_dl == 0xff) // Input
{
// 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);
}
else // Ouput
{
Bit8u c = reg_dl;
Bit16u n = 1;
DOS_WriteFile(STDOUT, &c, &n);
reg_al = reg_dl;
}
break;
case 0x07: // Character Input, without echo
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_Lodsb(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_Lodsb(data);
if (!free)
break;
Bit8u read = 0;
Bit8u c;
Bit16u n = 1;
for(;;)
{
DOS_ReadFile(STDIN, &c ,&n);
if (c == 8)
{ // Backspace
if (read)
{ // Something to backspace.
DOS_WriteFile(STDOUT, &c, &n); // STDOUT treats backspace as non-destructive.
c = ' ';
DOS_WriteFile(STDOUT, &c, &n);
c = 8;
DOS_WriteFile(STDOUT, &c, &n);
--read;
}
continue;
}
if (read >= free) // Keyboard buffer full
{
Beep(1750, 300);
continue;
}
DOS_WriteFile(STDOUT, &c, &n);
Mem_Stosb(data+read+2, c);
if (c == 13)
break;
read++;
}
Mem_Stosb(data+1, read);
}
break;
case 0x0b: // Get STDIN Status
reg_al = DOS_GetSTDINStatus() ? 0xff : 0x00;
break;
case 0x0c: // Flush Buffer and read STDIN call
{
Bit8u handle = RealHandle(STDIN);
if (handle != 0xFF && Files[handle] && Files[handle]->IsName("CON")) // flush buffer if STDIN is CON
{
Bit8u c;
Bit16u n;
while (DOS_GetSTDINStatus())
{
n = 1;
DOS_ReadFile(STDIN, &c, &n);
}
}
if (reg_al == 0x1 || reg_al == 0x6 || reg_al == 0x7 || reg_al == 0x8 || reg_al == 0xa)
{
Bit8u oldah = reg_ah;
reg_ah = reg_al;
DOS_21Handler();
reg_ah = oldah;
}
else
reg_al = 0;
}
break;
case 0x0d: // Disk Reset
break;
case 0x0e: // Select Default Drive
DOS_SetDefaultDrive(reg_dl);
reg_al = DOS_DRIVES;
break;
case 0x0f: // Open File using FCB
reg_al = DOS_FCBOpen(SegValue(ds), reg_dx) ? 0 : 0xFF;
break;
case 0x10: // Close File using FCB
reg_al = DOS_FCBClose(SegValue(ds), reg_dx) ? 0 : 0xFF;
break;
case 0x11: // Find First Matching File using FCB
reg_al = DOS_FCBFindFirst(SegValue(ds), reg_dx) ? 0 : 0xFF; // No test for C:\COMMAND.COM!
break;
case 0x12: // Find Next Matching File using FCB
reg_al = DOS_FCBFindNext(SegValue(ds), reg_dx) ? 0 : 0xFF;
break;
case 0x13: // Delete File using FCB
reg_al = DOS_FCBDeleteFile(SegValue(ds), reg_dx) ? 0 : 0xFF;
break;
case 0x14: // Sequential read from FCB
reg_al = DOS_FCBRead(SegValue(ds), reg_dx, 0);
break;
case 0x15: // Sequential write to FCB
reg_al = DOS_FCBWrite(SegValue(ds), reg_dx, 0);
break;
case 0x16: // Create or truncate file using FCB
reg_al = DOS_FCBCreate(SegValue(ds), reg_dx) ? 0 : 0xFF;
break;
case 0x17: // Rename file using FCB
reg_al = DOS_FCBRenameFile(SegValue(ds), reg_dx) ? 0 : 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
reg_al = DOS_FCBRandomRead(SegValue(ds), reg_dx, 1, true);
break;
case 0x22: // Write random record to FCB
reg_al = DOS_FCBRandomWrite(SegValue(ds), reg_dx, 1, true);
break;
case 0x23: // Get file size for FCB
reg_al = DOS_FCBGetFileSize(SegValue(ds), reg_dx) ? 0 : 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, reg_cx, false);
break;
case 0x28: // Random Block write to FCB
reg_al = DOS_FCBRandomWrite(SegValue(ds), reg_dx, reg_cx, false);
break;
case 0x29: // Parse filename into FCB
{
Bit8u difference;
char string[1024];
Mem_StrnCopyFrom(string, SegPhys(ds)+reg_si, 1023); // 1024 toasts the stack
reg_al = FCB_Parsename(SegValue(es), reg_di, reg_al, string, &difference);
reg_si += difference;
}
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());
break;
case 0x2a: // Get System Date
{
_SYSTEMTIME systime; // Return the Windows localdate
GetLocalTime(&systime);
reg_al = (Bit8u)systime.wDayOfWeek; // NB Sunday = 0, despite of MSDN documentation
reg_cx = systime.wYear;
reg_dx = (systime.wMonth<<8)+systime.wDay;
}
break;
case 0x2b: // Set System Date (we don't!)
reg_al = 0xff;
daysInMonth[2] = reg_cx&3 ? 28 : 29; // Year is from 1980 to 2099, it is this simple
if (reg_cx >= 1980 && reg_cx <= 2099)
if (reg_dh > 0 && reg_dh <= 12)
if (reg_dl > 0 && reg_dl <= daysInMonth[reg_dh])
reg_al = 0; // Date is valid, fake set
break;
case 0x2c: // Get System Time
{
_SYSTEMTIME systime; // Return the Windows localtime
GetLocalTime(&systime);
reg_cx = (systime.wHour<<8) + systime.wMinute;
reg_dx = (systime.wSecond<<8) + systime.wMilliseconds/10;
}
break;
case 0x2d: // Set System Time (we don't!)
if (reg_ch < 24 && reg_cl < 60 && reg_dh < 60 && reg_dl < 100)
reg_al = 0; // Time is valid, fake set
else
reg_al = 0xff;
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
else if (reg_al == 1)
reg_bh = 0; // DOS is NOT in HMA
reg_al = dos.version.major;
reg_ah = dos.version.minor;
reg_bl = 0; // Serialnumber
reg_cx = 0;
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 = 0;
SegSet16(ds, dos.tables.dpb);
reg_bx = drive; // Faking only the first entry (that is the driveletter)
}
else
reg_al = 0xff;
}
break;
case 0x33: // Extended Break Checking
switch (reg_al)
{
case 0: // Get the breakcheck flag
reg_dl = dos.breakcheck;
break;
case 1: // Set the breakcheck flag
dos.breakcheck = (reg_dl > 0);
break;
case 2:
{
bool old = dos.breakcheck;
dos.breakcheck = (reg_dl > 0);
reg_dl = old;
}
break;
case 3: // Get cpsw
case 4: // Set cpsw, both not used really
break;
case 5:
reg_dl = 3; // Boot drive = C:
break;
case 6: // Get true version number
reg_bx = (dos.version.minor<<8) + dos.version.major;
reg_dx = 0x1000; // Dos in ROM
break;
default:
reg_al = 0xff;
}
break;
case 0x34: // Get address of INDos Flag
SegSet16(es, DOS_SDA_SEG);
reg_bx = DOS_SDA_OFS + 0x01;
break;
case 0x35: // Get interrupt vector
reg_bx = Mem_Lodsw(0, ((Bit16u)reg_al)*4);
SegSet16(es, Mem_Lodsw(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
reg_ax = 0xffff; // invalid drive specified
}
break;
case 0x37: // Get/Set Switch char Get/Set Availdev thing
switch (reg_al)
{
case 0:
reg_dl = 0x2f; // Always return '/' like dos 5.0+
break;
case 1:
reg_al = 0;
break;
case 2:
reg_al = 0;
reg_dl = 0x2f;
break;
case 3:
reg_al = 0;
break;
}
break;
case 0x38: // Get/set Country Code
if (reg_al == 0) // Get country specidic information
{
PhysPt dest = SegPhys(ds)+reg_dx;
Mem_CopyTo(dest, dos.tables.country, 0x18);
reg_ax = reg_bx = 1;
CALLBACK_SCF(false);
}
else // Set country code
CALLBACK_SCF(true);
break;
case 0x39: // MKDIR Create directory
Mem_StrnCopyFrom(name1, SegPhys(ds)+reg_dx, DOSNAMEBUF);
rSpTrim(name1);
if (DOS_MakeDir(name1))
{
reg_ax = 0xffff; // AX destroyed
CALLBACK_SCF(false);
}
else
{
reg_ax = dos.errorcode;
CALLBACK_SCF(true);
}
break;
case 0x3a: // RMDIR Remove directory
Mem_StrnCopyFrom(name1, SegPhys(ds)+reg_dx, DOSNAMEBUF);
rSpTrim(name1);
if (DOS_RemoveDir(name1))
{
reg_ax = 0xffff; // AX destroyed
CALLBACK_SCF(false);
}
else
{
reg_ax = dos.errorcode;
CALLBACK_SCF(true);
}
break;
case 0x3b: // CHDIR Set current directory
Mem_StrnCopyFrom(name1, SegPhys(ds)+reg_dx, DOSNAMEBUF);
rSpTrim(name1);
if (DOS_ChangeDir(name1))
{
reg_ax = 0xff00; // AX destroyed
CALLBACK_SCF(false);
}
else
{
reg_ax = dos.errorcode;
CALLBACK_SCF(true);
}
break;
case 0x3c: // CREATE Create or truncate file
Mem_StrnCopyFrom(name1, SegPhys(ds)+reg_dx, DOSNAMEBUF);
rSpTrim(name1);
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_StrnCopyFrom(name1, SegPhys(ds)+reg_dx, DOSNAMEBUF);
rSpTrim(name1);
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))
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_CopyTo(SegPhys(ds)+reg_dx, dos_copybuf, toread);
reg_ax = toread;
CALLBACK_SCF(false);
}
else
{
reg_ax = dos.errorcode;
CALLBACK_SCF(true);
}
dos.echo = false;
}
break;
case 0x40: // WRITE Write to file or device
{
Bit16u towrite = reg_cx;
Mem_CopyFrom(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);
}
}
break;
case 0x41: // UNLINK Delete file
Mem_StrnCopyFrom(name1, SegPhys(ds)+reg_dx, DOSNAMEBUF);
rSpTrim(name1);
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);
}
}
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;
}
bool DOS_IOCTL(void) {
Bitu handle=0;Bit8u drive=0;
/* calls 0-4,6,7,10,12,16 use a file handle */
if ((reg_al<4) || (reg_al==0x06) || (reg_al==0x07) || (reg_al==0x0a) || (reg_al==0x0c) || (reg_al==0x10)) {
handle=RealHandle(reg_bx);
if (handle>=DOS_FILES) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
}
if (!Files[handle]) {
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
}
} else if (reg_al<0x12) { /* those use a diskdrive except 0x0b */
if (reg_al!=0x0b) {
drive=reg_bl;if (!drive) drive = DOS_GetDefaultDrive();else drive--;
if( !(( drive < DOS_DRIVES ) && Drives[drive]) ) {
DOS_SetError(DOSERR_INVALID_DRIVE);
return false;
}
}
} else {
LOG(LOG_DOSMISC,LOG_ERROR)("DOS:IOCTL Call %2X unhandled",reg_al);
DOS_SetError(DOSERR_FUNCTION_NUMBER_INVALID);
return false;
}
switch(reg_al) {
case 0x00: /* Get Device Information */
if (Files[handle]->GetInformation() & 0x8000) { //Check for device
reg_dx=Files[handle]->GetInformation();
} else {
Bit8u hdrive=Files[handle]->GetDrive();
if (hdrive==0xff) {
LOG(LOG_IOCTL,LOG_NORMAL)("00:No drive set");
hdrive=2; // defaulting to C:
}
/* return drive number in lower 5 bits for block devices */
reg_dx=(Files[handle]->GetInformation()&0xffe0)|hdrive;
}
reg_ax=reg_dx; //Destroyed officially
return true;
case 0x01: /* Set Device Information */
if (reg_dh != 0) {
DOS_SetError(DOSERR_DATA_INVALID);
return false;
} else {
if (Files[handle]->GetInformation() & 0x8000) { //Check for device
reg_al=(Bit8u)(Files[handle]->GetInformation() & 0xff);
} else {
DOS_SetError(DOSERR_FUNCTION_NUMBER_INVALID);
return false;
}
}
return true;
case 0x02: /* Read from Device Control Channel */
if (Files[handle]->GetInformation() & 0xc000) {
/* is character device with IOCTL support */
PhysPt bufptr=PhysMake(SegValue(ds),reg_dx);
Bit16u retcode=0;
if (((DOS_Device*)(Files[handle]))->ReadFromControlChannel(bufptr,reg_cx,&retcode)) {
reg_ax=retcode;
return true;
}
}
DOS_SetError(DOSERR_FUNCTION_NUMBER_INVALID);
return false;
case 0x03: /* Write to Device Control Channel */
if (Files[handle]->GetInformation() & 0xc000) {
/* is character device with IOCTL support */
PhysPt bufptr=PhysMake(SegValue(ds),reg_dx);
Bit16u retcode=0;
if (((DOS_Device*)(Files[handle]))->WriteToControlChannel(bufptr,reg_cx,&retcode)) {
reg_ax=retcode;
return true;
}
}
DOS_SetError(DOSERR_FUNCTION_NUMBER_INVALID);
return false;
case 0x06: /* Get Input Status */
if (Files[handle]->GetInformation() & 0x8000) { //Check for device
reg_al=(Files[handle]->GetInformation() & 0x40) ? 0x0 : 0xff;
} else { // FILE
Bit32u oldlocation=0;
Files[handle]->Seek(&oldlocation, DOS_SEEK_CUR);
Bit32u endlocation=0;
Files[handle]->Seek(&endlocation, DOS_SEEK_END);
if(oldlocation < endlocation){//Still data available
reg_al=0xff;
} else {
reg_al=0x0; //EOF or beyond
}
Files[handle]->Seek(&oldlocation, DOS_SEEK_SET); //restore filelocation
LOG(LOG_IOCTL,LOG_NORMAL)("06:Used Get Input Status on regular file with handle %d",handle);
}
return true;
case 0x07: /* Get Output Status */
LOG(LOG_IOCTL,LOG_NORMAL)("07:Fakes output status is ready for handle %d",handle);
reg_al=0xff;
return true;
case 0x08: /* Check if block device removable */
/* cdrom drives and drive a&b are removable */
if (drive < 2) reg_ax=0;
else if (!Drives[drive]->isRemovable()) reg_ax=1;
else {
DOS_SetError(DOSERR_FUNCTION_NUMBER_INVALID);
return false;
}
return true;
case 0x09: /* Check if block device remote */
if (Drives[drive]->isRemote()) {
reg_dx=0x1000; // device is remote
// undocumented bits always clear
} else {
reg_dx=0x0802; // Open/Close supported; 32bit access supported (any use? fixes Fable installer)
// undocumented bits from device attribute word
// TODO Set bit 9 on drives that don't support direct I/O
}
reg_ax=0x300;
return true;
case 0x0B: /* Set sharing retry count */
if (reg_dx==0) {
DOS_SetError(DOSERR_FUNCTION_NUMBER_INVALID);
return false;
}
return true;
case 0x0D: /* Generic block device request */
{
if (Drives[drive]->isRemovable()) {
DOS_SetError(DOSERR_FUNCTION_NUMBER_INVALID);
return false;
}
PhysPt ptr = SegPhys(ds)+reg_dx;
switch (reg_cl) {
case 0x60: /* Get Device parameters */
mem_writeb(ptr ,0x03); // special function
mem_writeb(ptr+1,(drive>=2)?0x05:0x14); // fixed disc(5), 1.44 floppy(14)
mem_writew(ptr+2,drive>=2); // nonremovable ?
mem_writew(ptr+4,0x0000); // num of cylinders
mem_writeb(ptr+6,0x00); // media type (00=other type)
// drive parameter block following
mem_writeb(ptr+7,drive); // drive
mem_writeb(ptr+8,0x00); // unit number
mem_writed(ptr+0x1f,0xffffffff); // next parameter block
break;
case 0x46:
case 0x66: /* Volume label */
{
char const* bufin=Drives[drive]->GetLabel();
char buffer[11] ={' '};
char const* find_ext=strchr(bufin,'.');
if (find_ext) {
Bitu size=(Bitu)(find_ext-bufin);
if (size>8) size=8;
memcpy(buffer,bufin,size);
find_ext++;
memcpy(buffer+size,find_ext,(strlen(find_ext)>3) ? 3 : strlen(find_ext));
} else {
memcpy(buffer,bufin,(strlen(bufin) > 8) ? 8 : strlen(bufin));
}
char buf2[8]={ 'F','A','T','1','6',' ',' ',' '};
if(drive<2) buf2[4] = '2'; //FAT12 for floppies
mem_writew(ptr+0,0); // 0
mem_writed(ptr+2,0x1234); //Serial number
MEM_BlockWrite(ptr+6,buffer,11);//volumename
if(reg_cl == 0x66) MEM_BlockWrite(ptr+0x11, buf2,8);//filesystem
}
break;
default :
LOG(LOG_IOCTL,LOG_ERROR)("DOS:IOCTL Call 0D:%2X Drive %2X unhandled",reg_cl,drive);
DOS_SetError(DOSERR_FUNCTION_NUMBER_INVALID);
return false;
}
return true;
}
case 0x0E: /* Get Logical Drive Map */
if (Drives[drive]->isRemovable()) {
DOS_SetError(DOSERR_FUNCTION_NUMBER_INVALID);
return false;
}
reg_al = 0; /* Only 1 logical drive assigned */
return true;
default:
LOG(LOG_DOSMISC,LOG_ERROR)("DOS:IOCTL Call %2X unhandled",reg_al);
DOS_SetError(DOSERR_FUNCTION_NUMBER_INVALID);
break;
}
return false;
}
bool DOS_IOCTL(void)
{
Bitu handle = 0;
Bit8u drive = 0;
// calls 0-4,6,7,10,12,16 use a file handle
if ((reg_al < 4) || (reg_al == 0x06) || (reg_al == 0x07) || (reg_al == 0x0a) || (reg_al == 0x0c) || (reg_al == 0x10))
{
handle = RealHandle(reg_bx);
if (handle >= DOS_FILES || !Files[handle])
{
DOS_SetError(DOSERR_INVALID_HANDLE);
return false;
}
}
else if (reg_al < 0x12)
{ // those use a diskdrive except 0x0b
if (reg_al != 0x0b)
{
drive = reg_bl;
if (!drive)
drive = DOS_GetDefaultDrive();
else
drive--;
if (!((drive < DOS_DRIVES) && Drives[drive]))
{
DOS_SetError(DOSERR_INVALID_DRIVE);
return false;
}
}
}
else
{
LOG(LOG_DOSMISC, LOG_ERROR)("DOS:IOCTL Call %2X unhandled", reg_al);
DOS_SetError(DOSERR_FUNCTION_NUMBER_INVALID);
return false;
}
switch (reg_al)
{
case 0: // Get Device Information
if (Files[handle]->GetInformation() & 0x8000) // Check for device
reg_dx = Files[handle]->GetInformation();
else
{
Bit8u hdrive = Files[handle]->GetDrive();
if (hdrive == 0xff)
hdrive = 2; // defaulting to C:
// return drive number in lower 5 bits for block devices
reg_dx = (Files[handle]->GetInformation()&0xffe0)|hdrive;
}
reg_ax = reg_dx; // Destroyed officially
return true;
case 1: // Set Device Information
if (reg_dh != 0)
{
DOS_SetError(DOSERR_DATA_INVALID);
return false;
}
if (Files[handle]->GetInformation() & 0x8000) // Check for device
reg_al = (Bit8u)(Files[handle]->GetInformation() & 0xff);
else
{
DOS_SetError(DOSERR_FUNCTION_NUMBER_INVALID);
return false;
}
return true;
case 2: // Read from Device Control Channel
DOS_SetError(DOSERR_FUNCTION_NUMBER_INVALID);
return false;
case 3: // Write to Device Control Channel
DOS_SetError(DOSERR_FUNCTION_NUMBER_INVALID);
return false;
case 6: // Get Input Status
if (Files[handle]->GetInformation() & 0x8000) // Check for device
reg_al = (Files[handle]->GetInformation() & 0x40) ? 0 : 0xff;
else
{ // FILE
Bit32u oldlocation = 0;
Files[handle]->Seek(&oldlocation, DOS_SEEK_CUR);
Bit32u endlocation = 0;
Files[handle]->Seek(&endlocation, DOS_SEEK_END);
if (oldlocation < endlocation)
reg_al = 0xff; // Still data available
else
reg_al = 0; //EOF or beyond
Files[handle]->Seek(&oldlocation, DOS_SEEK_SET); // restore filelocation
}
return true;
case 7: // Get Output Status
reg_al = 0xff;
return true;
case 8: // Check if block device removable
reg_ax = 1;
return true;
case 9: // Check if block device remote
reg_dx = 0x0802; // Open/Close supported; 32bit access supported (any use? fixes Fable installer)
// undocumented bits from device attribute word
// TODO Set bit 9 on drives that don't support direct I/O
reg_ax = 0x300;
return true;
case 0x0A: // Is Device or Handle Remote?
reg_dx = 0; // No!
return true;
case 0x0B: // Set sharing retry count
return true;
case 0x0D: // Generic block device request
{
PhysPt ptr = SegPhys(ds)+reg_dx;
switch (reg_cl)
{
case 0x60: // Get Device parameters
vPC_rStosb(ptr, 3); // special function
vPC_rStosb(ptr+1, (drive>=2) ? 0x05 : 0x14); // fixed disc(5), 1.44 floppy(14)
vPC_rStosw(ptr+2, drive >= 2); // nonremovable ?
vPC_rStosw(ptr+4, 0); // num of cylinders
vPC_rStosb(ptr+6, 0); // media type (00=other type)
// drive parameter block following
vPC_rStosb(ptr+7, drive); // drive
vPC_rStosb(ptr+8, 0); // unit number
vPC_rStosd(ptr+0x1f, 0xffffffff); // next parameter block
break;
case 0x46:
case 0x66: // Volume label
{
char const* bufin = Drives[drive]->GetLabel();
char buffer[11] ={' '};
char const* find_ext = strchr(bufin,'.');
if (find_ext)
{
Bitu size = (Bitu)(find_ext-bufin);
if (size > 8)
size = 8;
memcpy(buffer, bufin,size);
find_ext++;
memcpy(buffer+size, find_ext, (strlen(find_ext)>3) ? 3 : strlen(find_ext));
}
else
memcpy(buffer,bufin, (strlen(bufin) > 8) ? 8 : strlen(bufin));
char buf2[8]={ 'F','A','T','1','6',' ',' ',' '};
if (drive < 2)
buf2[4] = '2'; // FAT12 for floppies
vPC_rStosw(ptr+0, 0); // 0
vPC_rStosd(ptr+2, 0x1234); // Serial number
vPC_rBlockWrite(ptr+6, buffer,11); // volumename
if (reg_cl == 0x66)
vPC_rBlockWrite(ptr+0x11, buf2, 8); // filesystem
}
break;
default :
LOG(LOG_IOCTL, LOG_ERROR)("DOS:IOCTL Call 0D:%2X Drive %2X unhandled", reg_cl, drive);
DOS_SetError(DOSERR_FUNCTION_NUMBER_INVALID);
return false;
}
return true;
}
case 0x0E: // Get Logical Drive Map
reg_al = 0; // Only 1 logical drive assigned
return true;
default:
LOG(LOG_DOSMISC, LOG_ERROR)("DOS:IOCTL Call %2X unhandled", reg_al);
DOS_SetError(DOSERR_FUNCTION_NUMBER_INVALID);
break;
}
return false;
}
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;
}
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;
}
