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ccompan2: add nvram

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This commit is contained in:
hap 2023-11-11 15:46:22 +01:00
parent 3ae6843807
commit 68c73d6144
1 changed files with 22 additions and 3 deletions
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25
src/mame/saitek/ccompan2.cpp
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@ -8,8 +8,12 @@ SciSys Chess Companion II family
The chess engine is LogiChess (ported from Z80 to 6800), by Kaare Danielsen.
CXG Enterprise "S" / Star Chess is probably on similar hardware.
NOTE: It triggers an NMI when the power switch is changed from ON to MEMORY.
If this is not done, NVRAM may fail on the next boot.
TODO:
- add nvram (belongs in m6801.cpp, and it needs to save port $14 too)
- if/when MAME supports an exit callback, hook up power-off NMI to that
- MCU internal NVRAM belongs in m6801.cpp
- verify SciSys MCU frequency, the only videos online (for hearing sound pitch)
are from the Tandy 1650 ones
@ -51,6 +55,7 @@ is either VCC or GND to distinguish between the two.
#include "emu.h"
#include "cpu/m6800/m6801.h"
#include "machine/nvram.h"
#include "machine/sensorboard.h"
#include "sound/dac.h"
#include "video/pwm.h"
@ -105,6 +110,7 @@ private:
void set_cpu_freq();
TIMER_CALLBACK_MEMBER(set_pin);
void standby(int state);
emu_timer *m_standbytimer;
emu_timer *m_nmitimer;
@ -137,7 +143,15 @@ void ccompan2_state::set_cpu_freq()
void ccompan2_state::machine_reset()
{
m_power = true;
m_maincpu->set_input_line(INPUT_LINE_NMI, CLEAR_LINE);
m_maincpu->set_input_line(M6801_STBY_LINE, CLEAR_LINE);
}
void ccompan2_state::standby(int state)
{
if (state)
m_display->clear();
}
TIMER_CALLBACK_MEMBER(ccompan2_state::set_pin)
@ -157,7 +171,7 @@ INPUT_CHANGED_MEMBER(ccompan2_state::power_off)
// afterwards, MCU STBY pin is asserted after a short delay
delay += attotime::from_msec(10);
m_standbytimer->adjust(delay, INPUT_LINE_RESET);
m_standbytimer->adjust(delay, M6801_STBY_LINE);
}
}
@ -223,7 +237,7 @@ void ccompan2_state::led_w(u8 data)
void ccompan2_state::main_map(address_map &map)
{
map(0x0000, 0x0014).m(m_maincpu, FUNC(hd6301v1_cpu_device::m6801_io));
map(0x0080, 0x00ff).ram(); // internal
map(0x0080, 0x00ff).ram().share("internal"); // internal
map(0xf000, 0xffff).rom(); // internal
}
@ -328,6 +342,8 @@ void ccompan2_state::expchess(machine_config &config)
// basic machine hardware
HD6301V1(config, m_maincpu, 3000000); // approximation, no XTAL
m_maincpu->set_addrmap(AS_PROGRAM, &ccompan2_state::main_map);
m_maincpu->nvram_enable_backup(true);
m_maincpu->standby_cb().set(FUNC(ccompan2_state::standby));
m_maincpu->in_p1_cb().set(FUNC(ccompan2_state::input1_r));
m_maincpu->in_p2_cb().set(FUNC(ccompan2_state::input2_r));
m_maincpu->out_p2_cb().set("dac", FUNC(dac_1bit_device::write)).bit(0);
@ -335,9 +351,12 @@ void ccompan2_state::expchess(machine_config &config)
m_maincpu->in_p4_cb().set(FUNC(ccompan2_state::power_r));
m_maincpu->out_p4_cb().set(FUNC(ccompan2_state::led_w));
NVRAM(config, "internal", nvram_device::DEFAULT_ALL_0);
SENSORBOARD(config, m_board).set_type(sensorboard_device::BUTTONS);
m_board->init_cb().set(m_board, FUNC(sensorboard_device::preset_chess));
m_board->set_delay(attotime::from_msec(150));
m_board->set_nvram_enable(true);
// video hardware
PWM_DISPLAY(config, m_display).set_size(5+2, 8);