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Rewrote the disc sector poller again for simplified code and more accuracy;

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Floppy formats are now accurately timed and also more accurately implemented;
Applied all mainline PCem commits.
This commit is contained in:
OBattler
2016-08-20 03:40:12 +02:00
parent 24a6ab13fb
commit a924f37f43
51 changed files with 2471 additions and 1302 deletions
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13
src/x86_ops_pmode.h
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@@ -1,6 +1,3 @@
/* Copyright holders: Sarah Walker
see COPYING for more details
*/
static int opARPL_a16(uint32_t fetchdat)
{
uint16_t temp_seg;
@@ -294,7 +291,7 @@ static int op0F01_common(uint32_t fetchdat, int is32, int is286)
base = gdt.base; //is32 ? gdt.base : (gdt.base & 0xffffff);
if (is286)
base |= 0xff000000;
writememl(easeg, eaaddr + 2, base);
writememl(easeg, cpu_state.eaaddr + 2, base);
CLOCK_CYCLES(7);
break;
case 0x08: /*SIDT*/
@@ -302,7 +299,7 @@ static int op0F01_common(uint32_t fetchdat, int is32, int is286)
base = idt.base;
if (is286)
base |= 0xff000000;
writememl(easeg, eaaddr + 2, base);
writememl(easeg, cpu_state.eaaddr + 2, base);
CLOCK_CYCLES(7);
break;
case 0x10: /*LGDT*/
@@ -314,7 +311,7 @@ static int op0F01_common(uint32_t fetchdat, int is32, int is286)
}
// pclog("LGDT %08X:%08X\n", easeg, eaaddr);
limit = geteaw();
base = readmeml(0, easeg + eaaddr + 2); if (abrt) return 1;
base = readmeml(0, easeg + cpu_state.eaaddr + 2); if (abrt) return 1;
// pclog(" %08X %04X\n", base, limit);
gdt.limit = limit;
gdt.base = base;
@@ -330,7 +327,7 @@ static int op0F01_common(uint32_t fetchdat, int is32, int is286)
}
// pclog("LIDT %08X:%08X\n", easeg, eaaddr);
limit = geteaw();
base = readmeml(0, easeg + eaaddr + 2); if (abrt) return 1;
base = readmeml(0, easeg + cpu_state.eaaddr + 2); if (abrt) return 1;
// pclog(" %08X %04X\n", base, limit);
idt.limit = limit;
idt.base = base;
@@ -364,7 +361,7 @@ static int op0F01_common(uint32_t fetchdat, int is32, int is286)
x86gpf(NULL, 0);
break;
}
mmu_invalidate(ds + eaaddr);
mmu_invalidate(ds + cpu_state.eaaddr);
CLOCK_CYCLES(12);
break;
}