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bcheetah: correct K4 connection, increase mcu freq

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This commit is contained in:
hap 2023-09-30 16:06:39 +02:00
parent bb4c9fea40
commit 06c1684f69
1 changed files with 11 additions and 7 deletions
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18
src/mame/handheld/hh_tms1k.cpp
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@ -999,6 +999,8 @@ private:
void bcheetah_state::machine_start()
{
hh_tms1k_state::machine_start();
// resolve handlers
m_motor1.resolve();
m_motor2_left.resolve();
m_motor2_right.resolve();
@ -1009,8 +1011,8 @@ void bcheetah_state::machine_start()
void bcheetah_state::write_r(u32 data)
{
// R0-R4: input mux
// R5,R6: tied to K4??
m_inp_mux = data & 0x1f;
m_r = data;
}
void bcheetah_state::write_o(u16 data)
@ -1019,15 +1021,15 @@ void bcheetah_state::write_o(u16 data)
// O0: front motor steer left
// O2: front motor steer right
// O3: GND, other: N/C
m_motor1 = data >> 1 & 1;
m_motor2_left = data & 1;
m_motor2_right = data >> 2 & 1;
m_motor1 = BIT(data, 1);
m_motor2_left = BIT(data, 0);
m_motor2_right = BIT(data, 2);
}
u8 bcheetah_state::read_k()
{
// K: multiplexed inputs
return read_inputs(5);
// K: multiplexed inputs, K4 is also tied to R5+R6
return read_inputs(5) | ((m_r & 0x60) ? 4 : 0);
}
// inputs
@ -1065,7 +1067,7 @@ INPUT_PORTS_END
void bcheetah_state::bcheetah(machine_config &config)
{
// basic machine hardware
TMS1000(config, m_maincpu, 100000); // approximation - RC osc. R=47K, C=47pF
TMS1000(config, m_maincpu, 350000); // approximation - RC osc. R=47K, C=47pF
m_maincpu->read_k().set(FUNC(bcheetah_state::read_k));
m_maincpu->write_r().set(FUNC(bcheetah_state::write_r));
m_maincpu->write_o().set(FUNC(bcheetah_state::write_o));
@ -9925,6 +9927,7 @@ void mbdtower_state::machine_start()
{
hh_tms1k_state::machine_start();
// resolve handlers
m_motor_pos_out.resolve();
m_card_pos_out.resolve();
m_motor_on_out.resolve();
@ -12337,6 +12340,7 @@ void wtalker_state::machine_start()
{
hh_tms1k_state::machine_start();
// register for savestates
save_item(NAME(m_pulse));
save_item(NAME(m_dial));
save_item(NAME(m_ram_address));