static void set_pc_bit(const device_config *device, int bit, int state)
{
i8255a_t *i8255a = get_safe_token(device);
/* set output latch bit */
i8255a->output[PORT_C] &= ~(1 << bit);
i8255a->output[PORT_C] |= state << bit;
switch (group_mode(i8255a, GROUP_A))
{
case MODE_1:
if (port_mode(i8255a, PORT_A) == MODE_OUTPUT)
{
switch (bit)
{
case 3: set_intr(i8255a, PORT_A, state); break;
case 6: set_inte(i8255a, PORT_A, state); break;
case 7: set_obf(i8255a, PORT_A, state); break;
}
}
else
{
switch (bit)
{
case 3: set_intr(i8255a, PORT_A, state); break;
case 4: set_inte(i8255a, PORT_A, state); break;
case 5: set_ibf(i8255a, PORT_A, state); break;
}
}
break;
case MODE_2:
switch (bit)
{
case 3: set_intr(i8255a, PORT_A, state); break;
case 4: set_inte2(i8255a, state); break;
case 5: set_ibf(i8255a, PORT_A, state); break;
case 6: set_inte1(i8255a, state); break;
case 7: set_obf(i8255a, PORT_A, state); break;
}
break;
}
if (group_mode(i8255a, GROUP_B) == MODE_1)
{
switch (bit)
{
case 0: set_intr(i8255a, PORT_B, state); break;
case 1:
if (port_mode(i8255a, PORT_B) == MODE_OUTPUT)
set_obf(i8255a, PORT_B, state);
else
set_ibf(i8255a, PORT_B, state);
break;
case 2: set_inte(i8255a, PORT_B, state); break;
}
}
output_pc(i8255a);
}
void i8255_device::write_mode2(uint8_t data)
{
// latch output data
m_output[PORT_A] = data;
// write data to port
m_out_pa_cb((offs_t)0, data);
// set output buffer full flag
set_obf(PORT_A, 0);
// clear interrupt
set_intr(PORT_A, 0);
}
static void write_mode2(i8255a_t *i8255a, UINT8 data)
{
/* latch output data */
i8255a->output[PORT_A] = data;
/* write data to port */
devcb_call_write8(&i8255a->out_port_func[PORT_A], 0, data);
/* set output buffer full flag */
set_obf(i8255a, PORT_A, 0);
/* clear interrupt */
set_intr(i8255a, PORT_A, 0);
}
void i8255_device::write_mode2(UINT8 data)
{
// latch output data
m_output[PORT_A] = data;
// write data to port
m_out_port_func[PORT_A](0, data);
// set output buffer full flag
set_obf(PORT_A, 0);
// clear interrupt
set_intr(PORT_A, 0);
}
static void write_mode1(i8255a_t *i8255a, int port, UINT8 data)
{
if (port_mode(i8255a, port) == MODE_OUTPUT)
{
/* latch output data */
i8255a->output[port] = data;
/* write data to port */
devcb_call_write8(&i8255a->out_port_func[port], 0, data);
/* set output buffer full flag */
set_obf(i8255a, port, 0);
/* clear interrupt */
set_intr(i8255a, port, 0);
}
}
void i8255_device::write_mode1(int port, UINT8 data)
{
if (port_mode(port) == MODE_OUTPUT)
{
// latch output data
m_output[port] = data;
// write data to port
m_out_port_func[port](0, data);
// set output buffer full flag
set_obf(port, 0);
// clear interrupt
set_intr(port, 0);
}
}
void i8255_device::write_mode1(int port, uint8_t data)
{
if (port_mode(port) == MODE_OUTPUT)
{
// latch output data
m_output[port] = data;
// write data to port
if (port == PORT_A)
m_out_pa_cb((offs_t)0, m_output[port]);
else if (port == PORT_B)
m_out_pb_cb((offs_t)0, m_output[port]);
else
m_out_pc_cb((offs_t)0, m_output[port]);
// set output buffer full flag
set_obf(port, 0);
// clear interrupt
set_intr(port, 0);
}
}
void i8255_device::set_pc_bit(int bit, int state)
{
// set output latch bit
m_output[PORT_C] &= ~(1 << bit);
m_output[PORT_C] |= state << bit;
switch (group_mode(GROUP_A))
{
case MODE_1:
if (port_mode(PORT_A) == MODE_OUTPUT)
{
switch (bit)
{
case 3: set_intr(PORT_A, state); break;
case 6: set_inte(PORT_A, state); break;
case 7: set_obf(PORT_A, state); break;
default: break;
}
}
else
{
switch (bit)
{
case 3: set_intr(PORT_A, state); break;
case 4: set_inte(PORT_A, state); break;
case 5: set_ibf(PORT_A, state); break;
default: break;
}
}
break;
case MODE_2:
switch (bit)
{
case 3: set_intr(PORT_A, state); break;
case 4: set_inte2(state); break;
case 5: set_ibf(PORT_A, state); break;
case 6: set_inte1(state); break;
case 7: set_obf(PORT_A, state); break;
default: break;
}
break;
}
if (group_mode(GROUP_B) == MODE_1)
{
switch (bit)
{
case 0: set_intr(PORT_B, state); break;
case 1:
if (port_mode(PORT_B) == MODE_OUTPUT)
set_obf(PORT_B, state);
else
set_ibf(PORT_B, state);
break;
case 2: set_inte(PORT_B, state); break;
default: break;
}
}
output_pc();
}
