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montec: fix lockup

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(cherry picked from commit b7edc5e9e7)
This commit is contained in:
hap 2020-07-26 07:53:08 +02:00
parent 60bd3086cc
commit aa9d1222f9
1 changed files with 3 additions and 16 deletions
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19
src/mame/drivers/mephisto_montec.cpp
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@ -16,6 +16,7 @@
- split driver into several files?
- megaiv/smondial leds are tri-color
- why are megaiv/smondial2 beeps noisy?
- what is montec 0x2000? (it can't be nmi ack)
- add Monte Carlo IV (non-LE)
**************************************************************************************************/
@ -65,8 +66,6 @@ public:
protected:
uint8_t montec_input_r();
uint8_t montec_nmi_ack_r();
void montec_nmi_ack_w(uint8_t data);
void montec_led_w(uint8_t data);
template<int N> void montec_lcd_s_w(uint32_t data);
@ -154,18 +153,6 @@ uint8_t mephisto_montec_state::montec_input_r()
return m_board->input_r() ^ 0xff;
}
uint8_t mephisto_montec_state::montec_nmi_ack_r()
{
if (!machine().side_effects_disabled())
m_maincpu->set_input_line(INPUT_LINE_NMI, CLEAR_LINE);
return 0;
}
void mephisto_montec_state::montec_nmi_ack_w(uint8_t data)
{
m_maincpu->set_input_line(INPUT_LINE_NMI, CLEAR_LINE);
}
void mephisto_montec_state::megaiv_led_w(uint8_t data)
{
if (m_leds_mux != m_board->mux_r())
@ -199,7 +186,7 @@ uint8_t mephisto_montec_state::megaiv_input_r(offs_t offset)
void mephisto_montec_state::montec_mem(address_map &map)
{
map(0x0000, 0x1fff).ram().share("nvram");
map(0x2000, 0x2000).rw(FUNC(mephisto_montec_state::montec_nmi_ack_r), FUNC(mephisto_montec_state::montec_nmi_ack_w));
map(0x2000, 0x2000).noprw(); // ?
map(0x2400, 0x2400).r(FUNC(mephisto_montec_state::montec_input_r));
map(0x2800, 0x2800).w(m_board, FUNC(mephisto_board_device::mux_w));
map(0x2c00, 0x2c00).w(m_board, FUNC(mephisto_board_device::led_w));
@ -336,7 +323,7 @@ void mephisto_montec_state::montec(machine_config &config)
{
M65C02(config, m_maincpu, XTAL(8'000'000) / 2); // R65C02P4
m_maincpu->set_addrmap(AS_PROGRAM, &mephisto_montec_state::montec_mem);
m_maincpu->set_periodic_int(FUNC(mephisto_montec_state::nmi_line_assert), attotime::from_hz(XTAL(8'000'000) / (1 << 14)));
m_maincpu->set_periodic_int(FUNC(mephisto_montec_state::nmi_line_pulse), attotime::from_hz(XTAL(8'000'000) / (1 << 14)));
NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0);