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f2mc16: Fix a few subtle mistakes (nw)

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This commit is contained in:
AJR 2019-07-10 23:44:54 -04:00
parent f47dba85cb
commit 08cb6e9a79
2 changed files with 4 additions and 4 deletions
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4
src/devices/cpu/f2mc16/f2mc16.cpp
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@ -1472,7 +1472,7 @@ void f2mc16_device::opcodes_ea74(u8 operand)
switch (operand) switch (operand)
{ {
// CMP A, @RWx + disp8 // CMP A, @RWx + disp8
case 0x70: case 0x71: case 0x72: case 0x73: case 0x74: case 0x75: case 0x76: case 0x57: case 0x70: case 0x71: case 0x72: case 0x73: case 0x74: case 0x75: case 0x76: case 0x77:
m_tmp8 = read_8((m_pcb<<16) | (m_pc+2)); m_tmp8 = read_8((m_pcb<<16) | (m_pc+2));
m_tmp16 = read_rwX(operand & 7) + (s8)m_tmp8; m_tmp16 = read_rwX(operand & 7) + (s8)m_tmp8;
m_tmp8 = read_8(getRWbank(operand & 7, m_tmp16)); m_tmp8 = read_8(getRWbank(operand & 7, m_tmp16));
@ -1502,7 +1502,7 @@ void f2mc16_device::opcodes_ea76(u8 operand)
switch (operand) switch (operand)
{ {
// CMPW A, @RWx + disp8 // CMPW A, @RWx + disp8
case 0x70: case 0x71: case 0x72: case 0x73: case 0x74: case 0x75: case 0x76: case 0x57: case 0x70: case 0x71: case 0x72: case 0x73: case 0x74: case 0x75: case 0x76: case 0x77:
m_tmp8 = read_8((m_pcb<<16) | (m_pc+2)); m_tmp8 = read_8((m_pcb<<16) | (m_pc+2));
m_tmp16 = read_rwX(operand & 7) + (s8)m_tmp8; m_tmp16 = read_rwX(operand & 7) + (s8)m_tmp8;
m_tmp16 = read_16(getRWbank(operand & 7, m_tmp16)); m_tmp16 = read_16(getRWbank(operand & 7, m_tmp16));

4
src/devices/cpu/f2mc16/f2mc16.h
View File

@ -365,7 +365,7 @@ private:
inline u16 doADD_16(u16 lhs, u16 rhs) inline u16 doADD_16(u16 lhs, u16 rhs)
{ {
m_tmp32 = lhs + rhs; m_tmp32 = lhs + rhs;
m_ps &= ~F_V|F_C; m_ps &= ~(F_C|F_V);
if ((m_tmp32 ^ lhs) & (m_tmp32 ^ rhs) & 0x8000) if ((m_tmp32 ^ lhs) & (m_tmp32 ^ rhs) & 0x8000)
{ {
m_ps |= F_V; m_ps |= F_V;
@ -381,7 +381,7 @@ private:
inline u32 doADD_32(u32 lhs, u32 rhs) inline u32 doADD_32(u32 lhs, u32 rhs)
{ {
m_tmp64 = lhs + rhs; m_tmp64 = lhs + rhs;
m_ps &= ~F_V|F_C; m_ps &= ~(F_C|F_V);
if ((m_tmp64 ^ lhs) & (m_tmp64 ^ rhs) & 0x80000000) if ((m_tmp64 ^ lhs) & (m_tmp64 ^ rhs) & 0x80000000)
{ {
m_ps |= F_V; m_ps |= F_V;