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Some FCB read/write refinements. Stop exiting on weird int 21 0x33 calls. (ripsaw)

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3666
This commit is contained in:
Peter Veenstra 2011-01-05 19:48:18 +00:00
parent c3a904c56e
commit 1589c86ebe
3 changed files with 28 additions and 20 deletions
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18
src/dos/dos.cpp
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@ -319,11 +319,17 @@ static Bitu DOS_21Handler(void) {
if (!DOS_GetAllocationInfo(reg_dl,&reg_cx,&reg_al,&reg_dx)) reg_al=0xff;
break;
case 0x21: /* Read random record from FCB */
reg_al = DOS_FCBRandomRead(SegValue(ds),reg_dx,1,true);
{
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 */
reg_al=DOS_FCBRandomWrite(SegValue(ds),reg_dx,1,true);
{
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 */
@ -334,11 +340,11 @@ static Bitu DOS_21Handler(void) {
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);
reg_al = DOS_FCBRandomRead(SegValue(ds),reg_dx,&reg_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,reg_cx,false);
reg_al=DOS_FCBRandomWrite(SegValue(ds),reg_dx,&reg_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 */
@ -462,7 +468,9 @@ static Bitu DOS_21Handler(void) {
reg_dh=0x10; /* Dos in HMA */
break;
default:
E_Exit("DOS:Illegal 0x33 Call %2X",reg_al);
LOG(LOG_DOSMISC,LOG_ERROR)("Weird 0x33 call %2X",reg_al);
reg_al =0xff;
break;
}
break;
case 0x34: /* Get INDos Flag */