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fixed int 21 1c and changed sectors allocation to bit8 instead of bit16

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@555
This commit is contained in:
Peter Veenstra 2002-12-02 18:56:53 +00:00
parent 845d5c172f
commit 8f4eaf16a2
8 changed files with 28 additions and 20 deletions
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21
src/dos/dos.cpp
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@ -32,7 +32,7 @@ DOS_Block dos;
DOS_InfoBlock dos_infoblock;
Bit8u dos_copybuf[0x10000];
static Bitu call_20,call_21,call_27;
static Bitu call_20,call_21,call_27,call_28;
void DOS_SetError(Bit16u code) {
dos.errorcode=code;
@ -215,10 +215,10 @@ static Bitu DOS_21Handler(void) {
else reg_al = 0xFF;
break;
case 0x1b: /* Get allocation info for default drive */
if (!DOS_GetAllocationInfo(0,&reg_cx,&reg_ax,&reg_dx)) reg_al=0xff;
if (!DOS_GetAllocationInfo(0,&reg_cx,&reg_al,&reg_dx)) reg_al=0xff;
break;
case 0x1c: /* Get allocation info for specific drive */
if (!DOS_GetAllocationInfo(reg_dl,&reg_cx,&reg_ax,&reg_dx)) reg_al=0xff;
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);
@ -359,7 +359,8 @@ static Bitu DOS_21Handler(void) {
break;
case 0x36: /* Get Free Disk Space */
{
Bit16u bytes,sectors,clusters,free;
Bit16u bytes,clusters,free;
Bit8u sectors;
if (DOS_GetFreeDiskSpace(reg_dl,&bytes,&sectors,&clusters,&free)) {
reg_ax=sectors;
reg_bx=free;
@ -783,9 +784,6 @@ static Bitu DOS_21Handler(void) {
LOG_DEBUG("DOS:67:Set Handle Count not working");
CALLBACK_SCF(false);
break;
case 0x68: /* FFLUSH Commit file */
E_Exit("Unhandled Dos 21 call %02X",reg_ah);
break;
case 0x69: /* Get/Set disk serial number */
{
switch(reg_al) {
@ -808,6 +806,7 @@ static Bitu DOS_21Handler(void) {
CALLBACK_SCF(true);
LOG_WARN("DOS:Windows long file name support call %2X",reg_al);
break;
case 0x68: /* FFLUSH Commit file */
case 0xE0:
case 0x18: /* NULL Function for CP/M compatibility or Extended rename FCB */
case 0x1d: /* NULL Function for CP/M compatibility or Extended rename FCB */
@ -844,6 +843,10 @@ static Bitu DOS_27Handler(void)
return CBRET_NONE;
}
static Bitu DOS_28Handler(void) {
return CBRET_NONE;
}
void DOS_Init(Section* sec) {
MSG_Add("DOS_CONFIGFILE_HELP","Setting a memory size to 0 will disable it.\n");
call_20=CALLBACK_Allocate();
@ -858,6 +861,10 @@ void DOS_Init(Section* sec) {
CALLBACK_Setup(call_27,DOS_27Handler,CB_IRET);
RealSetVec(0x27,CALLBACK_RealPointer(call_27));
call_28=CALLBACK_Allocate();
CALLBACK_Setup(call_28,DOS_28Handler,CB_IRET);
RealSetVec(0x28,CALLBACK_RealPointer(call_28));
DOS_SetupFiles(); /* Setup system File tables */
DOS_SetupDevices(); /* Setup dos devices */
DOS_SetupTables();