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nmicro2: piccolo has the same mcu as octo

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This commit is contained in:
hap 2023-12-26 21:30:25 +01:00
parent 66871ec25b
commit b051aa35b8
2 changed files with 19 additions and 16 deletions
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31
src/mame/novag/micro2.cpp
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@ -10,8 +10,6 @@ This program was used in several Novag chesscomputers:
- Novag Micro III
- Novag Presto
- Novag Octo
suspected, to be confirmed:
- Novag Allegro (not Allegro 4)
- Novag Piccolo
@ -23,21 +21,26 @@ Micro II, Micro III(same pcb):
- Mitsubishi M5L8049-079P-6, 6MHz XTAL
- buzzer, 20 leds, 8*8 chessboard buttons
Presto (listed differences):
Presto:
- PCB label: 100023, 100024
- NEC D80C49C MCU(serial 186), OSC from LC circuit measured ~6MHz
Octo (listed differences):
Octo (high-speed):
- same PCB as Presto
- NEC D80C49HC MCU(serial 111), 12MHz OSC from LC circuit, this was advertised
as 15MHz on the box, but measured ~12MHz (older Octo version is probably ~6MHz?)
- speaker circuit is a bit different, not sure why
Note that even though the MCUs are different, internal ROM contents was confirmed
to be identical for Micro II/III, Presto, Octo.
Piccolo (high-speed):
- PCB label: NOVAG 100041
- same MCU serial as Octo, LC OSC is around 14MHz
TODO:
- controls are too sensitive, is there a bug in the CPU core timer emulation?
6MHz: valid (single) button press registered between 307ms and 436ms,
12MHz: between 154ms and 218ms.
Note that even though the MCUs are different, internal ROM contents was confirmed
to be identical for Micro II/III, Presto, Octo, Piccolo.
BTANB:
- controls are very sensitive (board sensors too): 6MHz: valid (single) button
press registered between 307ms and 436ms, 15MHz: between 123ms and 174ms
*******************************************************************************/
@ -108,11 +111,11 @@ void micro2_state::machine_start()
void micro2_state::set_cpu_freq()
{
// known CPU speeds: 6MHz(XTAL), 6MHz(LC), 12MHz(LC)
u32 freq = (ioport("CPU")->read() & 1) ? 12'000'000 : 6'000'000;
// known CPU speeds: 6MHz(XTAL), 6MHz(LC), ~15MHz(may vary, LC)
u32 freq = (ioport("CPU")->read() & 1) ? 15'000'000 : 6'000'000;
m_maincpu->set_unscaled_clock(freq);
m_board->set_delay(attotime::from_ticks(2'000'000, freq)); // see TODO
m_board->set_delay(attotime::from_ticks(2'000'000, freq)); // see BTANB
}
@ -185,7 +188,7 @@ static INPUT_PORTS_START( micro2 )
PORT_START("CPU")
PORT_CONFNAME( 0x01, 0x00, "CPU Frequency" ) PORT_CHANGED_MEMBER(DEVICE_SELF, micro2_state, change_cpu_freq, 0) // factory set
PORT_CONFSETTING( 0x00, "6MHz (original)" )
PORT_CONFSETTING( 0x01, "12MHz (Octo)" )
PORT_CONFSETTING( 0x01, "15MHz (newer)" )
INPUT_PORTS_END

4
src/mame/saitek/edames.cpp
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@ -235,8 +235,8 @@ static INPUT_PORTS_START( edames ) // see comments for French version labels
PORT_START("IN.3")
PORT_CONFNAME( 0x03, 0x02, "CPU Frequency" ) PORT_CHANGED_MEMBER(DEVICE_SELF, edames_state, change_cpu_freq, 0) // factory set
PORT_CONFSETTING( 0x02, "8MHz" )
PORT_CONFSETTING( 0x00, "12MHz" )
PORT_CONFSETTING( 0x02, "8MHz (original)" )
PORT_CONFSETTING( 0x00, "12MHz (newer)" )
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYPAD) PORT_CODE(KEYCODE_T) PORT_NAME("Swap Side") // Tourne Damier
PORT_START("RESET")