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i386: implemented FCLEX FPU instruction. [Barry Rodewald]

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This commit is contained in:
Miodrag Milanovic 2011-07-19 08:45:07 +00:00
parent 036b025ba4
commit 2e549870b7
1 changed files with 8 additions and 0 deletions
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8
src/emu/cpu/i386/x87ops.c
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@ -182,6 +182,14 @@ static void I386OP(fpu_group_db)(i386_state *cpustate) // Opcode 0xdb
{
switch (modrm & 0x3f)
{
case 0x22: // FCLEX
{
// clears exception flags and busy bit.
cpustate->fpu_status_word &= ~0x80ff;
CYCLES(cpustate,1); // TODO
break;
}
case 0x23: // FINIT
{
cpustate->fpu_control_word = 0x37f;