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Diffstat (limited to 'src/mame/drivers/exedexes.cpp')
-rw-r--r--src/mame/drivers/exedexes.cpp12
1 files changed, 6 insertions, 6 deletions
diff --git a/src/mame/drivers/exedexes.cpp b/src/mame/drivers/exedexes.cpp
index 8d7f73b1454..858edb0f2be 100644
--- a/src/mame/drivers/exedexes.cpp
+++ b/src/mame/drivers/exedexes.cpp
@@ -210,11 +210,11 @@ void exedexes_state::machine_reset()
void exedexes_state::exedexes(machine_config &config)
{
/* basic machine hardware */
- Z80(config, m_maincpu, 4000000); /* 4 MHz (?) */
+ Z80(config, m_maincpu, 12_MHz_XTAL / 4); // 3 MHz, verified on PCB
m_maincpu->set_addrmap(AS_PROGRAM, &exedexes_state::exedexes_map);
TIMER(config, "scantimer").configure_scanline(FUNC(exedexes_state::scanline), "screen", 0, 1);
- z80_device &audiocpu(Z80(config, "audiocpu", 3000000)); /* 3 MHz ??? */
+ z80_device &audiocpu(Z80(config, "audiocpu", 12_MHz_XTAL / 4)); // 3 MHz, verified on PCB
audiocpu.set_addrmap(AS_PROGRAM, &exedexes_state::sound_map);
audiocpu.set_periodic_int(FUNC(exedexes_state::irq0_line_hold), attotime::from_hz(4*60));
@@ -222,7 +222,7 @@ void exedexes_state::exedexes(machine_config &config)
BUFFERED_SPRITERAM8(config, m_spriteram);
screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER));
- screen.set_refresh_hz(60);
+ screen.set_refresh_hz(59.60); // verified on PCB
screen.set_vblank_time(ATTOSECONDS_IN_USEC(0));
screen.set_size(32*8, 32*8);
screen.set_visarea(0*8, 32*8-1, 2*8, 30*8-1);
@@ -239,11 +239,11 @@ void exedexes_state::exedexes(machine_config &config)
GENERIC_LATCH_8(config, "soundlatch");
- AY8910(config, "aysnd", 1500000).add_route(ALL_OUTPUTS, "mono", 0.10);
+ AY8910(config, "aysnd", 12_MHz_XTAL / 8).add_route(ALL_OUTPUTS, "mono", 0.10); // 1.5 MHz, verified on PCB
- SN76489(config, "sn1", 3000000).add_route(ALL_OUTPUTS, "mono", 0.36);
+ SN76489(config, "sn1", 12_MHz_XTAL / 4).add_route(ALL_OUTPUTS, "mono", 0.36); // 3 MHz, verified on PCB
- SN76489(config, "sn2", 3000000).add_route(ALL_OUTPUTS, "mono", 0.36);
+ SN76489(config, "sn2", 12_MHz_XTAL / 4).add_route(ALL_OUTPUTS, "mono", 0.36); // 3 MHz, verified on PCB
}