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i386: tzcnt fall back to bsf for 386 and 486 too

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This commit is contained in:
cracyc 2023-07-03 13:32:04 -05:00
parent 40bfb19bce
commit a9b4767304
1 changed files with 1 additions and 0 deletions
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src/devices/cpu/i386/i386ops.h
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@ -521,6 +521,7 @@ const i386_device::X86_OPCODE i386_device::s_x86_opcode_table[] =
{ 0x7F, OP_3BYTEF3|OP_SSE, &i386_device::sse_movdqu_rm128_r128, &i386_device::sse_movdqu_rm128_r128, false},
{ 0xAE, OP_3BYTE66|OP_SSE, &i386_device::i386_invalid, &i386_device::i386_invalid, false},
{ 0xB8, OP_3BYTEF3|OP_PENTIUM, &i386_device::pentium_popcnt_r16_rm16, &i386_device::pentium_popcnt_r32_rm32, false},
{ 0xBC, OP_3BYTEF3|OP_I386, &i386_device::i386_bsf_r16_rm16, &i386_device::i386_bsf_r32_rm32, false},
{ 0xBC, OP_3BYTEF3|OP_PENTIUM, &i386_device::pentium_tzcnt_r16_rm16, &i386_device::pentium_tzcnt_r32_rm32, false},
{ 0xC2, OP_3BYTEF3|OP_SSE, &i386_device::sse_cmpss_r128_r128m32_i8, &i386_device::sse_cmpss_r128_r128m32_i8,false},
{ 0xC7, OP_3BYTEF2|OP_SSE, &i386_device::i386_invalid, &i386_device::i386_invalid, false},