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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;
}
// 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
{
ST(0).i ^= FPU_SIGN_BIT_DOUBLE;
@ -177,6 +187,17 @@ static void I386OP(fpu_group_d9)(i386_state *cpustate) // Opcode 0xd9
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
{
X87_REG t;
@ -194,6 +215,9 @@ static void I386OP(fpu_group_d9)(i386_state *cpustate) // Opcode 0xd9
CYCLES(cpustate,1); // TODO
break;
}
default:
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)
{
//UINT32 ea = GetEA(cpustate,modrm);
UINT32 ea = GetEA(cpustate,modrm);
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:
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
@ -339,6 +374,17 @@ static void I386OP(fpu_group_dd)(i386_state *cpustate) // Opcode 0xdd
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
{
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)
{
// UINT32 ea = GetEA(cpustate,modrm);
UINT32 ea = GetEA(cpustate,modrm);
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:
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
16 bits are used so it ends up in reading at conventional work RAM.
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
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>();
UINT32 val = 0;
printf("Voodoo[0] PCI R: %x\n", reg);
printf("Voodoo PCI R: %x\n", reg);
switch (reg)
{