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dotrikun: correct irq pulse timing (nw)

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This commit is contained in:
hap 2017-11-15 19:19:15 +01:00
parent 0b50eb9099
commit d854ec06b1
1 changed files with 7 additions and 5 deletions
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12
src/mame/drivers/dotrikun.cpp
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@ -33,6 +33,8 @@ TODO:
#include "dotrikun.lh"
#define MASTER_CLOCK XTAL_4MHz
class dotrikun_state : public driver_device
{
@ -68,12 +70,12 @@ public:
TIMER_DEVICE_CALLBACK_MEMBER(dotrikun_state::interrupt)
{
m_maincpu->pulse_input_line(0, 1);
m_maincpu->pulse_input_line(0, attotime::from_hz(MASTER_CLOCK/256));
}
TIMER_DEVICE_CALLBACK_MEMBER(dotrikun_state::scanline_off)
{
m_maincpu->set_unscaled_clock(XTAL_4MHz);
m_maincpu->set_unscaled_clock(MASTER_CLOCK);
}
TIMER_DEVICE_CALLBACK_MEMBER(dotrikun_state::scanline_on)
@ -81,7 +83,7 @@ TIMER_DEVICE_CALLBACK_MEMBER(dotrikun_state::scanline_on)
// on vram fetch(every 8 pixels during active display), z80 is stalled for 2 clocks
if (param < 192)
{
m_maincpu->set_unscaled_clock(XTAL_4MHz * 0.75);
m_maincpu->set_unscaled_clock(MASTER_CLOCK * 0.75);
m_scanline_off_timer->adjust(m_screen->time_until_pos(param, 128));
}
@ -189,7 +191,7 @@ void dotrikun_state::machine_reset()
static MACHINE_CONFIG_START( dotrikun )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", Z80, XTAL_4MHz)
MCFG_CPU_ADD("maincpu", Z80, MASTER_CLOCK)
MCFG_CPU_PROGRAM_MAP(dotrikun_map)
MCFG_CPU_IO_MAP(io_map)
MCFG_TIMER_DRIVER_ADD_SCANLINE("scanline_on", dotrikun_state, scanline_on, "screen", 0, 1)
@ -198,7 +200,7 @@ static MACHINE_CONFIG_START( dotrikun )
/* video hardware */
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_RAW_PARAMS(XTAL_4MHz, 128+128, 0, 128, 192+64, 0, 192)
MCFG_SCREEN_RAW_PARAMS(MASTER_CLOCK, 128+128, 0, 128, 192+64, 0, 192)
MCFG_SCREEN_UPDATE_DRIVER(dotrikun_state, screen_update)
MCFG_SCREEN_VIDEO_ATTRIBUTES(VIDEO_ALWAYS_UPDATE)
MCFG_SCREEN_PALETTE("palette")