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get rid of write_pc, those checks are not needed

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This commit is contained in:
Michaël Banaan Ananas 2012-05-21 10:39:58 +00:00
parent 643d0e9d92
commit 96123c775d
2 changed files with 2 additions and 31 deletions
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32
src/emu/machine/i8255.c
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@ -562,35 +562,6 @@ void i8255_device::write_mode2(UINT8 data)
}
//-------------------------------------------------
// write_pc -
//-------------------------------------------------
void i8255_device::write_pc(UINT8 data)
{
int changed = 0;
// PC upper
if (group_mode(GROUP_A) == MODE_0 && port_c_upper_mode() == MODE_OUTPUT)
{
m_output[PORT_C] = (data & 0xf0) | (m_output[PORT_C] & 0x0f);
changed = 1;
}
// PC lower
if (group_mode(GROUP_B) == MODE_0 && port_c_lower_mode() == MODE_OUTPUT)
{
m_output[PORT_C] = (m_output[PORT_C] & 0xf0) | (data & 0x0f);
changed = 1;
}
if (changed)
{
output_pc();
}
}
//-------------------------------------------------
// output_pc -
//-------------------------------------------------
@ -878,7 +849,8 @@ WRITE8_MEMBER( i8255_device::write )
case PORT_C:
if (LOG) logerror("I8255 '%s' Port C Write: %02x\n", tag(), data);
write_pc(data);
m_output[PORT_C] = data;
output_pc();
break;
case CONTROL:

1
src/emu/machine/i8255.h
View File

@ -126,7 +126,6 @@ private:
void write_mode0(int port, UINT8 data);
void write_mode1(int port, UINT8 data);
void write_mode2(UINT8 data);
void write_pc(UINT8 data);
void output_pc();
void set_mode(UINT8 data);
void set_pc_bit(int bit, int state);