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More opcodes tripped by Funky Ball ... (and no, it doesn't stop here)

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This commit is contained in:
Angelo Salese 2012-01-02 22:15:01 +00:00
parent 3b0e1175f5
commit 7dbdd98e34
2 changed files with 64 additions and 5 deletions
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62
src/emu/cpu/i386/x87ops.c
View File

@ -170,6 +170,16 @@ static void I386OP(fpu_group_d9)(i386_state *cpustate) // Opcode 0xd9
break; break;
} }
// FXCH
case 0x08: case 0x09: case 0x0a: case 0x0b: case 0x0c: case 0x0d: case 0x0e: case 0x0f:
{
X87_REG t = ST(0);
ST(0) = ST(modrm & 7);
ST(modrm & 7) = t;
CYCLES(cpustate,4);
break;
}
case 0x20: // FCHS case 0x20: // FCHS
{ {
ST(0).i ^= FPU_SIGN_BIT_DOUBLE; ST(0).i ^= FPU_SIGN_BIT_DOUBLE;
@ -177,6 +187,17 @@ static void I386OP(fpu_group_d9)(i386_state *cpustate) // Opcode 0xd9
break; break;
} }
case 0x24: // FTST
{
cpustate->fpu_status_word &= ~(FPU_C3 | FPU_C2 | FPU_C0);
if(ST(0).f == 0.0)
cpustate->fpu_status_word |= FPU_C3;
if(ST(0).f < 0.0)
cpustate->fpu_status_word |= FPU_C0;
CYCLES(cpustate,4);
break;
}
case 0x28: // FLD1 case 0x28: // FLD1
{ {
X87_REG t; X87_REG t;
@ -194,6 +215,9 @@ static void I386OP(fpu_group_d9)(i386_state *cpustate) // Opcode 0xd9
CYCLES(cpustate,1); // TODO CYCLES(cpustate,1); // TODO
break; break;
} }
default: default:
fatalerror("I386: FPU Op D9 %02X at %08X", modrm, cpustate->pc-2); fatalerror("I386: FPU Op D9 %02X at %08X", modrm, cpustate->pc-2);
} }
@ -273,12 +297,23 @@ static void I386OP(fpu_group_dc)(i386_state *cpustate) // Opcode 0xdc
if (modrm < 0xc0) if (modrm < 0xc0)
{ {
//UINT32 ea = GetEA(cpustate,modrm); UINT32 ea = GetEA(cpustate,modrm);
switch ((modrm >> 3) & 0x7) switch ((modrm >> 3) & 0x7)
{ {
case 6: /* FDIV double */
X87_REG t;
t.i = READ64(cpustate,ea);
if(t.f)
ST(0).f /= t.f;
else
fatalerror("FPU Op DC 6 Divide by zero unhandled exception");
CYCLES(cpustate,73);
break;
default: default:
fatalerror("I386: FPU Op DC %02X at %08X", modrm, cpustate->pc-2); printf("I386: FPU Op DC %02X at %08X", (modrm >> 3) & 0x7, cpustate->pc-2);
} }
} }
else else
@ -339,6 +374,17 @@ static void I386OP(fpu_group_dd)(i386_state *cpustate) // Opcode 0xdd
break; break;
} }
case 3: // FSTP
{
X87_REG t;
t.f = ST(0).f;
WRITE64(cpustate,ea, t.i);
FPU_POP(cpustate);
CYCLES(cpustate,8);
break;
}
case 7: // FSTSW case 7: // FSTSW
{ {
WRITE16(cpustate,ea, (cpustate->fpu_status_word & ~FPU_STACK_TOP_MASK) | (cpustate->fpu_top << 10)); WRITE16(cpustate,ea, (cpustate->fpu_status_word & ~FPU_STACK_TOP_MASK) | (cpustate->fpu_top << 10));
@ -436,10 +482,20 @@ static void I386OP(fpu_group_df)(i386_state *cpustate) // Opcode 0xdf
if (modrm < 0xc0) if (modrm < 0xc0)
{ {
// UINT32 ea = GetEA(cpustate,modrm); UINT32 ea = GetEA(cpustate,modrm);
switch ((modrm >> 3) & 0x7) switch ((modrm >> 3) & 0x7)
{ {
case 5: // FILD
{
X87_REG t;
t.f=(INT64)READ64(cpustate,ea);
FPU_PUSH(cpustate,t);
CYCLES(cpustate,10);
break;
}
default: default:
fatalerror("I386: FPU Op DF %02X at %08X", modrm, cpustate->pc-2); fatalerror("I386: FPU Op DF %02X at %08X", modrm, cpustate->pc-2);
} }

7
src/mame/drivers/funkball.c
View File

@ -8,7 +8,10 @@ Notes:
It does: mov [ebx],ecx in there, where ebx is 0xfffxxxxx, but only lower It does: mov [ebx],ecx in there, where ebx is 0xfffxxxxx, but only lower
16 bits are used so it ends up in reading at conventional work RAM. 16 bits are used so it ends up in reading at conventional work RAM.
CPU core bug? CPU core bug?
- Trips 00019652: fld dword ptr [esp+4Ch] after it bp 0x182a8,ax = 1
bp 0x18390,ax = 1
bp 0x183a2,ax = 1
bp 0x1b578,ax = 1
Funky Ball Funky Ball
dgPIX, 1998 dgPIX, 1998
@ -161,7 +164,7 @@ static UINT32 voodoo_0_pci_r(device_t *busdevice, device_t *device, int function
funkball_state* state = device->machine().driver_data<funkball_state>(); funkball_state* state = device->machine().driver_data<funkball_state>();
UINT32 val = 0; UINT32 val = 0;
printf("Voodoo[0] PCI R: %x\n", reg); printf("Voodoo PCI R: %x\n", reg);
switch (reg) switch (reg)
{ {