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i8087: fsave resets the fpu

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This commit is contained in:
cracyc 2022-05-26 14:13:56 -05:00
parent 1799466943
commit ecdd2c5ddf
2 changed files with 2 additions and 0 deletions
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1
src/devices/cpu/i386/x87ops.hxx
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@ -4870,6 +4870,7 @@ void i386_device::x87_fsave(uint8_t modrm)
for (int i = 0; i < 8; ++i) for (int i = 0; i < 8; ++i)
WRITE80(ea + i*10, ST(i)); WRITE80(ea + i*10, ST(i));
x87_reset();
CYCLES((m_cr[0] & 1) ? 56 : 67); CYCLES((m_cr[0] & 1) ? 56 : 67);
} }

1
src/devices/machine/i8087.cpp
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@ -4236,6 +4236,7 @@ void i8087_device::fsave(u8 modrm)
for (int i = 0; i < 8; ++i) for (int i = 0; i < 8; ++i)
WRITE80(ea + i*10, ST(i)); WRITE80(ea + i*10, ST(i));
reset();
CYCLES(67); CYCLES(67);
} }