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New segments and removed setsegemnt16 function

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@159
This commit is contained in:
Sjoerd van der Berg 2002-08-19 12:34:52 +00:00
parent 2ae43c7636
commit 77f4c055de
1 changed files with 11 additions and 20 deletions
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31
src/cpu/cpu.cpp
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@ -86,7 +86,7 @@ void Interrupt(Bit8u num) {
case 0xcd:
E_Exit("Call to interrupt 0xCD this is BAD");
case 0x03:
#ifdef C_DEBUG
#if C_DEBUG
if (DEBUG_BreakPoint()) return;
#endif
break;
@ -117,15 +117,15 @@ void Interrupt(Bit8u num) {
flags.tf=false;
/* Save everything on a 16-bit stack */
reg_sp-=2;
mem_writew(Segs[ss].phys+reg_sp,pflags);
mem_writew(SegPhys(ss)+reg_sp,pflags);
reg_sp-=2;
mem_writew(Segs[ss].phys+reg_sp,Segs[cs].value);
mem_writew(SegPhys(ss)+reg_sp,SegValue(cs));
reg_sp-=2;
mem_writew(Segs[ss].phys+reg_sp,reg_ip);
mem_writew(SegPhys(ss)+reg_sp,reg_ip);
/* Get the new CS:IP from vector table */
Bit16u newip=mem_readw(num << 2);
Bit16u newcs=mem_readw((num <<2)+2);
SetSegment_16(cs,newcs);
SegSet16(cs,newcs);
reg_ip=newip;
}
@ -136,15 +136,6 @@ void SetCPU16bit()
CPU_Real_16_Slow_Start();
}
void SetSegment_16(Bit32u seg,Bit16u val) {
Segs[seg].value=val;
Bit32u off=(val << 4);
Segs[seg].host=memory+off;
Segs[seg].phys=off;
//TODO Maybe use this feature one day :)
// Segs[seg].special=MEMORY_TestSpecial(off);
};
void CPU_Init(void) {
reg_eax=0;
@ -156,12 +147,12 @@ void CPU_Init(void) {
reg_ebp=0;
reg_esp=0;
SetSegment_16(cs,0);
SetSegment_16(ds,0);
SetSegment_16(es,0);
SetSegment_16(fs,0);
SetSegment_16(gs,0);
SetSegment_16(ss,0);
SegSet16(cs,0);
SegSet16(ds,0);
SegSet16(es,0);
SegSet16(fs,0);
SegSet16(gs,0);
SegSet16(ss,0);
reg_eip=0;
flags.type=t_UNKNOWN;