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vclock3: increase cpu clock to match better with real time

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This commit is contained in:
hap 2023-07-08 16:03:05 +02:00
parent ef6cb6efa1
commit 9db3fe893c
2 changed files with 4 additions and 3 deletions
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5
src/mame/handheld/hh_tms1k.cpp
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@ -11669,7 +11669,8 @@ ROM_END
Even though it has a 60 Hz inputline, it doesn't use it to sync the clock.
Instead, it relies on the MCU frequency, which is not very accurate when
using a simple R/C osc.
using a simple R/C osc. In 60 Hz mode, it expects a CPU clock of around
375 kHz, and in 50 Hz mode around 369 kHz.
Micronta is not a company, but one of the Radio Shack house brands.
Schematics are included in the manual, they also mention a CM72005 VSM.
@ -11821,7 +11822,7 @@ INPUT_PORTS_END
void vclock3_state::vclock3(machine_config &config)
{
// basic machine hardware
TMS1100(config, m_maincpu, 320000); // approximation - RC osc. R=47K, C=47pF
TMS1100(config, m_maincpu, 375000); // approximation - RC osc. R=47K, C=47pF
m_maincpu->read_k().set(FUNC(vclock3_state::read_k));
m_maincpu->write_r().set(FUNC(vclock3_state::write_r));
m_maincpu->write_o().set(FUNC(vclock3_state::write_o));

2
src/mame/konami/konmedal.cpp
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@ -175,7 +175,7 @@ private:
u8 m_control2 = 0;
u8 m_shuri_irq = 0;
int m_ccu_int_time = 0;
int m_ccu_int_time_count = 0;;
int m_ccu_int_time_count = 0;
int m_avac = 0;
int m_layer_colorbase[4] = { };
int m_layer_order[4] = { };