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ns32081: movif bug fixes

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* fixed byte-sized operand case
* fixed sign extension
This commit is contained in:
Patrick Mackinlay 2020-10-07 19:32:25 +07:00
parent 088cf0ad19
commit a9844643c4
1 changed files with 14 additions and 7 deletions
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21
src/devices/machine/ns32081.cpp
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@ -206,7 +206,7 @@ void ns32081_device::write_op(u16 data)
switch ((m_opword >> 3) & 7)
{
case 0: // movif
m_op[0].expected = size + 1;
m_op[0].expected = (size == SIZE_B) ? 2 : (size + 1);
m_op[2].expected = f_length;
break;
case 1: // lfsr
@ -327,12 +327,19 @@ void ns32081_device::execute()
// MOVif src,dest
// gen,gen
// read.i,write.f
if (single)
m_op[2].value = i32_to_f32(m_op[0].value).v;
else
m_op[2].value = i32_to_f64(m_op[0].value).v;
m_op[2].expected = f_length;
m_tcy = 53;
{
s32 const src =
(size == SIZE_D) ? s32(m_op[0].value) :
(size == SIZE_W) ? s16(m_op[0].value) :
s8(m_op[0].value);
if (single)
m_op[2].value = i32_to_f32(src).v;
else
m_op[2].value = i32_to_f64(src).v;
m_op[2].expected = f_length;
m_tcy = 53;
}
break;
case 1:
// LFSR src