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made dos more compatible and fixed aaowcga

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@496
This commit is contained in:
Peter Veenstra 2002-11-13 11:39:31 +00:00
parent 6906625545
commit 7dba8a97b8
1 changed files with 11 additions and 10 deletions
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21
src/dos/dos.cpp
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@ -43,9 +43,6 @@ static Bitu DOS_21Handler(void) {
char name1[DOSNAMEBUF+1];
char name2[DOSNAMEBUF+1];
switch (reg_ah) {
case 0x00: /* Terminate Program */
E_Exit("DOS:Unhandled call %02X",reg_ah);
break;
case 0x01: /* Read character from STDIN, with echo */
{
Bit8u c;Bit16u n=1;
@ -161,7 +158,7 @@ static Bitu DOS_21Handler(void) {
break;
case 0x0e: /* Select Default Drive */
DOS_SetDefaultDrive(reg_dl);
reg_al=26;
reg_al=DOS_DRIVES;
break;
case 0x0f: /* Open File using FCB */
if(DOS_FCBOpen(SegValue(ds),reg_dx)){
@ -605,8 +602,11 @@ static Bitu DOS_21Handler(void) {
}
break;
//TODO Check for use of execution state AL=5
case 0x00:
reg_ax=0x4c00; /* Terminate Program */
case 0x4c: /* EXIT Terminate with return code */
{
{
if (DOS_Terminate(false)) {
/* This can't ever return false normally */
} else {
@ -653,9 +653,10 @@ static Bitu DOS_21Handler(void) {
//TODO Think hard how shit this is gonna be
//And will any game ever use this :)
case 0x53: /* Translate BIOS parameter block to drive parameter block */
//YEAH RIGHT
E_Exit("Unhandled Dos 21 call %02X",reg_ah);
break;
case 0x54: /* Get verify flag */
E_Exit("Unhandled Dos 21 call %02X",reg_ah);
reg_al=dos.verify?1:0;
break;
case 0x55: /* Create Child PSP*/
DOS_NewPSP(reg_dx,reg_si);
@ -821,10 +822,10 @@ static Bitu DOS_21Handler(void) {
LOG_WARN("DOS:Windows long file name support call %2X",reg_al);
break;
case 0xE0:
LOG_DEBUG("DOS:E0:Unhandled, what should this call do?");
break;
case 0xEF:
default:
E_Exit("DOS:Unhandled call %02X",reg_ah);
reg_al=0x00; /* default value */
LOG_DEBUG("DOS:Unhandled call %02X. Set al to default of 0 no carry",reg_ah);
break;
};
return CBRET_NONE;