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bus/mackbd: Silence debug logging when M0110A keyboard ensures bus pins aren't pulled down

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This commit is contained in:
Vas Crabb 2020-07-01 23:01:47 +10:00
parent 912e6785e7
commit f464e2bbb3
1 changed files with 7 additions and 0 deletions
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7
src/devices/bus/mackbd/pluskbd.cpp
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@ -129,6 +129,7 @@ protected:
virtual void device_add_mconfig(machine_config &config) override
{
I8048(config, m_mpu, 6_MHz_XTAL); // NEC 8048HC517 341-0332-A with ceramic resonator
m_mpu->set_addrmap(AS_IO, &m0110a_device::mpu_io);
m_mpu->p1_out_cb().set(FUNC(m0110a_device::p1_w));
m_mpu->p2_in_cb().set_ioport("P2");
m_mpu->p2_out_cb().set(FUNC(m0110a_device::p2_w));
@ -191,6 +192,12 @@ private:
return result;
}
void mpu_io(address_map &map)
{
// MPU writes 0xff to these addresses before reading columns to ensure the bus pins aren't pulled down
map(0x2a, 0x33).nopw();
}
TIMER_CALLBACK_MEMBER(update_host_data)
{
if (bool(param) != bool(m_host_data_in))