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supremo: placeholder for io ports

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This commit is contained in:
hap 2020-12-27 13:39:14 +01:00
parent 035224f1b4
commit dca104bfbe
2 changed files with 30 additions and 2 deletions
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2
src/mame/drivers/novag_snova.cpp
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@ -9,7 +9,7 @@ Hardware notes:
- Hitachi HD63A03YP MCU @ 16MHz (4MHz internal)
- 32KB ROM(TC57256AD-12), 8KB RAM(CXK58648P-10L)
- LCD with 4 digits and custom segments, no LCD chip
- RS232 port for Novag Super System (like the one in sexpertc)
- RJ-12 port for Novag Super System (like the one in sexpertc)
- buzzer, 16 LEDs, 8*8 chessboard buttons
TODO:

30
src/mame/drivers/novag_supremo.cpp
View File

@ -19,6 +19,7 @@ TODO:
- does not work, most likely due to incomplete cpu emulation (unemulated timer registers),
could also be a bad rom dump on top of that - even when adding IRQ3 with a hack, it
doesn't do much at all
- I/O seems very similar to nsnova, can drivers be merged? (get this one working first)
- is 1988 version the same ROM?
******************************************************************************/
@ -57,6 +58,11 @@ private:
required_device<dac_bit_interface> m_dac;
void main_map(address_map &map);
u8 p2_r();
void p2_w(u8 data);
void p5_w(u8 data);
void p6_w(u8 data);
};
void supremo_state::machine_start()
@ -69,7 +75,25 @@ void supremo_state::machine_start()
I/O
******************************************************************************/
// ...
u8 supremo_state::p2_r()
{
return 1;
}
void supremo_state::p2_w(u8 data)
{
// P22: speaker out
m_dac->write(BIT(data, 2));
}
void supremo_state::p5_w(u8 data)
{
}
void supremo_state::p6_w(u8 data)
{
}
@ -105,6 +129,10 @@ void supremo_state::supremo(machine_config &config)
/* basic machine hardware */
HD6303Y(config, m_maincpu, 8_MHz_XTAL);
m_maincpu->set_addrmap(AS_PROGRAM, &supremo_state::main_map);
m_maincpu->in_p2_cb().set(FUNC(supremo_state::p2_r));
m_maincpu->out_p2_cb().set(FUNC(supremo_state::p2_w));
m_maincpu->out_p5_cb().set(FUNC(supremo_state::p5_w));
m_maincpu->out_p6_cb().set(FUNC(supremo_state::p6_w));
// THIS IS A HACK, vector @ 0xffec, use ROM_COPY
//const attotime irq_period = attotime::from_ticks(4 * 128 * 10, 8_MHz_XTAL);