diff options
| author | 2023-11-22 17:17:46 -0500 | |
|---|---|---|
| committer | 2023-11-22 17:17:46 -0500 | |
| commit | fd1969bee2bf1320963040d62ee911ff520db48f (patch) | |
| tree | 8142a3ffaf37a2c148de370efe9997981988241d /src | |
| parent | 97f01e27747aa6ce04798ada63a6fbf283cd1824 (diff) | |
irem/travrusa.cpp: Correct CPU clock and screen timings based on schematics
Diffstat (limited to 'src')
| -rw-r--r-- | src/mame/irem/travrusa.cpp | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/src/mame/irem/travrusa.cpp b/src/mame/irem/travrusa.cpp index dd7e83998ce..5656a8488b4 100644 --- a/src/mame/irem/travrusa.cpp +++ b/src/mame/irem/travrusa.cpp @@ -296,17 +296,12 @@ void travrusa_state::machine_reset() void travrusa_state::travrusa(machine_config &config) { /* basic machine hardware */ - Z80(config, m_maincpu, 4000000); /* 4 MHz (?) */ + Z80(config, m_maincpu, 18.432_MHz_XTAL / 6); m_maincpu->set_addrmap(AS_PROGRAM, &travrusa_state::main_map); /* video hardware */ screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); - screen.set_refresh_hz(56.75); - screen.set_vblank_time(ATTOSECONDS_IN_USEC(1790) /* accurate frequency, measured on a Moon Patrol board, is 56.75Hz. */); - /* the Lode Runner manual (similar but different hardware) */ - /* talks about 55Hz and 1790ms vblank duration. */ - screen.set_size(32*8, 32*8); - screen.set_visarea(1*8, 31*8-1, 0*8, 32*8-1); + screen.set_raw(18.432_MHz_XTAL / 3, 384, 8, 248, 282, 0, 256); // verified from schematics; accurate frequency, measured on a Moon Patrol board, is 56.75Hz screen.set_screen_update(FUNC(travrusa_state::screen_update_travrusa)); screen.set_palette(m_palette); // Race start countdown in shtrider needs multiple interrupts per frame to sync, mustache.cpp has the same, and is also a Seibu game |
