diff options
Diffstat (limited to 'src/devices/bus/pc_kbd/pcat101.cpp')
-rw-r--r-- | src/devices/bus/pc_kbd/pcat101.cpp | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/src/devices/bus/pc_kbd/pcat101.cpp b/src/devices/bus/pc_kbd/pcat101.cpp index 77dfca9cbb7..dac54eb9af2 100644 --- a/src/devices/bus/pc_kbd/pcat101.cpp +++ b/src/devices/bus/pc_kbd/pcat101.cpp @@ -14,7 +14,6 @@ * 1391401 US English 101-key * * TODO - * - requires mask rom 6805u3 and timer * - fix issue receiving commands */ @@ -46,8 +45,7 @@ const tiny_rom_entry *ibm_pc_at_101_keyboard_device::device_rom_region() const void ibm_pc_at_101_keyboard_device::device_add_mconfig(machine_config &config) { - // FIXME: really a 6805U3 (mask ROM, not EPROM) part - M68705U3(config, m_mcu, 4_MHz_XTAL); + M6805U3(config, m_mcu, 4_MHz_XTAL); // ports A and C control the matrix column select m_mcu->porta_w().set([this](u8 data) { m_porta = data; }); @@ -60,8 +58,8 @@ void ibm_pc_at_101_keyboard_device::device_add_mconfig(machine_config &config) m_mcu->portb_r().set(FUNC(ibm_pc_at_101_keyboard_device::portb_r)); m_mcu->portb_w().set(FUNC(ibm_pc_at_101_keyboard_device::portb_w)); - // TODO: timer is held high - //m_mcu->timer_r().set_constant(1); + // timer is tied high + m_mcu->timer_w(1); } INPUT_PORTS_START(ibm_pc_at_101_keyboard) @@ -244,6 +242,9 @@ void ibm_pc_at_101_keyboard_device::device_start() { set_pc_kbdc_device(); + save_item(NAME(m_porta)); + save_item(NAME(m_portc)); + m_leds.resolve(); } @@ -254,15 +255,12 @@ void ibm_pc_at_101_keyboard_device::device_reset() void ibm_pc_at_101_keyboard_device::data_write(int state) { - m_mcu->set_input_line(M68705_IRQ_LINE, state); + m_mcu->set_input_line(M6805_IRQ_LINE, state); } u8 ibm_pc_at_101_keyboard_device::portb_r() { - if (clock_signal()) - return m_portb & ~0x02; - else - return m_portb | 0x02; + return clock_signal() ? 0x00 : 0x02; } void ibm_pc_at_101_keyboard_device::portb_w(u8 data) @@ -271,8 +269,6 @@ void ibm_pc_at_101_keyboard_device::portb_w(u8 data) m_leds[LED_NUM] = BIT(data, 4); m_leds[LED_SCROLL] = BIT(data, 3); - m_portb = data; - m_pc_kbdc->data_write_from_kb(!BIT(data, 2)); m_pc_kbdc->clock_write_from_kb(!BIT(data, 0)); } |