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Some undocumented features for findfirst/findnext and new dos_ioctl call.

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@415
This commit is contained in:
Sjoerd van der Berg 2002-10-25 15:38:45 +00:00
parent 17a1974f6a
commit a18cdd1387
1 changed files with 7 additions and 6 deletions
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13
src/dos/dos.cpp
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@ -40,7 +40,6 @@ void DOS_SetError(Bit16u code) {
#define DOSNAMEBUF 256
static Bitu DOS_21Handler(void) {
//TODO KEYBOARD Check for break
char name1[DOSNAMEBUF+1];
char name2[DOSNAMEBUF+1];
switch (reg_ah) {
@ -460,7 +459,7 @@ static Bitu DOS_21Handler(void) {
case 0x3f: /* READ Read from file or device */
{
Bit16u toread=reg_cx;
if (reg_cx+reg_dx>0xffff) LOG_DEBUG("DOS:READ:Buffer overflow");
if (reg_cx+reg_dx>0xffff) LOG_DEBUG("DOS:READ:Buffer overflow %d",reg_cx+reg_dx);
if (DOS_ReadFile(reg_bx,dos_copybuf,&toread)) {
MEM_BlockWrite(SegPhys(ds)+reg_dx,dos_copybuf,toread);
reg_ax=toread;
@ -474,7 +473,7 @@ static Bitu DOS_21Handler(void) {
case 0x40: /* WRITE Write to file or device */
{
Bit16u towrite=reg_cx;
if (reg_cx+reg_dx>0xffff) LOG_DEBUG("DOS:WRITE:Buffer overflow");
if (reg_cx+reg_dx>0xffff) LOG_DEBUG("DOS:WRITE:Buffer overflow %d",reg_cx+reg_dx);
MEM_BlockRead(SegPhys(ds)+reg_dx,dos_copybuf,towrite);
if (DOS_WriteFile(reg_bx,dos_copybuf,&towrite)) {
reg_ax=towrite;
@ -528,7 +527,7 @@ static Bitu DOS_21Handler(void) {
}
break;
case 0x44: /* IOCTL Functions */
if (DOS_IOCTL(reg_al,reg_bx)) {
if (DOS_IOCTL()) {
CALLBACK_SCF(false);
} else {
reg_ax=dos.errorcode;
@ -622,7 +621,8 @@ static Bitu DOS_21Handler(void) {
case 0x4e: /* FINDFIRST Find first matching file */
MEM_StrCopy(SegPhys(ds)+reg_dx,name1,DOSNAMEBUF);
if (DOS_FindFirst(name1,reg_cx)) {
CALLBACK_SCF(false);
CALLBACK_SCF(false);
reg_ax=0; /* Undocumented */
} else {
reg_ax=dos.errorcode;
CALLBACK_SCF(true);
@ -630,7 +630,8 @@ static Bitu DOS_21Handler(void) {
break;
case 0x4f: /* FINDNEXT Find next matching file */
if (DOS_FindNext()) {
CALLBACK_SCF(false);
CALLBACK_SCF(false);
reg_ax=0xffff; /* Undocumented */
} else {
reg_ax=dos.errorcode;
CALLBACK_SCF(true);