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psikyo/psikyo.cpp: Corrected screen timings and interrupts for Gunbird and Sengoku Ace. (#11303)

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Gunbird is verified to use the same timings as Strikers 1945 and Tengai, so Sengoku Ace can be assumed to be similar.
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buffi 2023-06-01 20:47:24 +02:00 committed by GitHub
parent 10a54ca422
commit f18cb715e6
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1 changed files with 4 additions and 17 deletions
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21
src/mame/psikyo/psikyo.cpp
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@ -29,11 +29,6 @@ Tengai (J) 1996 SH404 SH404 has MCU, ymf278-b for sound
To Do:
- Some games use naive/unlikely measurements (exactly 59.30), which should be verified.
Tengai and Strikers 1945 have accurate measurements from PCB. Maybe these could be used
for other titles too?
- All games but Tengai / Strikers 1945 use IRQ1 for VBlank. This is likely incorrect.
On Tengai/Strikers 1945, its actually IPL2 that's asserted (Interrupt Level = 4).
- tengai / tengaij: "For use in Japan" screen is supposed to output the
typical blue Psikyo backdrop gradient instead of being pure black as it is
now;
@ -1030,7 +1025,7 @@ void psikyo_state::sngkace(machine_config &config)
/* basic machine hardware */
M68EC020(config, m_maincpu, XTAL(32'000'000)/2); /* verified on pcb */
m_maincpu->set_addrmap(AS_PROGRAM, &psikyo_state::sngkace_map);
m_maincpu->set_vblank_int("screen", FUNC(psikyo_state::irq1_line_hold));
m_maincpu->set_vblank_int("screen", FUNC(psikyo_state::irq4_line_hold));
Z80(config, m_audiocpu, XTAL(32'000'000)/8); /* verified on pcb */
m_audiocpu->set_addrmap(AS_PROGRAM, &psikyo_state::sngkace_sound_map);
@ -1038,11 +1033,7 @@ void psikyo_state::sngkace(machine_config &config)
/* video hardware */
SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
// TODO: accurate measurements
m_screen->set_refresh_hz(59.3);
m_screen->set_vblank_time(ATTOSECONDS_IN_USEC(2500));
m_screen->set_size(320, 256);
m_screen->set_visarea(0, 320-1, 0, 256-32-1);
m_screen->set_raw(14.318181_MHz_XTAL / 2, 456, 0, 320, 262, 0, 224); // Approximately 59.923Hz, 38 Lines in VBlank
m_screen->set_screen_update(FUNC(psikyo_state::screen_update));
m_screen->screen_vblank().set(FUNC(psikyo_state::screen_vblank));
@ -1076,7 +1067,7 @@ void psikyo_state::gunbird(machine_config &config)
/* basic machine hardware */
M68EC020(config, m_maincpu, 16_MHz_XTAL); // 16 MHz
m_maincpu->set_addrmap(AS_PROGRAM, &psikyo_state::gunbird_map);
m_maincpu->set_vblank_int("screen", FUNC(psikyo_state::irq1_line_hold));
m_maincpu->set_vblank_int("screen", FUNC(psikyo_state::irq4_line_hold));
LZ8420M(config, m_audiocpu, 16_MHz_XTAL / 2); // 8 MHz (16 / 2)
m_audiocpu->set_addrmap(AS_PROGRAM, &psikyo_state::gunbird_sound_map);
@ -1084,11 +1075,7 @@ void psikyo_state::gunbird(machine_config &config)
/* video hardware */
SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
// TODO: accurate measurements
m_screen->set_refresh_hz(59.3);
m_screen->set_vblank_time(ATTOSECONDS_IN_USEC(2500));
m_screen->set_size(320, 256);
m_screen->set_visarea(0, 320-1, 0, 256-32-1);
m_screen->set_raw(14.318181_MHz_XTAL / 2, 456, 0, 320, 262, 0, 224); // Approximately 59.923Hz, 38 Lines in VBlank
m_screen->set_screen_update(FUNC(psikyo_state::screen_update));
m_screen->screen_vblank().set(FUNC(psikyo_state::screen_vblank));