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funtech/supracan.cpp: check for irq status on enable writes

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* fix gamblord boot
This commit is contained in:
angelosa 2024-09-02 21:03:16 +02:00
parent 47b6486811
commit eec7e4d641
1 changed files with 6 additions and 2 deletions
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8
src/mame/funtech/supracan.cpp
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@ -66,7 +66,7 @@ STATUS:
DEBUG TRICKS:
baseball game debug trick:
staiwbbl:
wpset e90020,1f,w
do pc=5ac40
...
@ -1015,6 +1015,8 @@ uint32_t supracan_state::screen_update(screen_device &screen, bitmap_ind16 &bitm
m_sprite_final_bitmap.fill(0x00, cliprect);
m_sprite_mask_bitmap.fill(0x00, cliprect);
m_prio_bitmap.fill(0xff, cliprect);
// TODO: pinpoint back layer color
// A'Can logo wants 0x30, boomzoo (title) and sangofgt (1st fighter stage) wants 0x00
bitmap.fill(0x80, cliprect);
draw_sprites(m_sprite_final_bitmap, m_sprite_mask_bitmap, m_prio_bitmap, cliprect);
@ -1489,6 +1491,8 @@ void supracan_state::_6502_soundmem_w(offs_t offset, uint8_t data)
}
case 0x410:
m_soundcpu_irq_enable = data;
// gamblord (at least) checks for pending irqs
m_soundcpu->set_input_line(0, (m_soundcpu_irq_enable & m_soundcpu_irq_source) ? ASSERT_LINE : CLEAR_LINE);
LOGMASKED(LOG_SOUND | LOG_IRQS, "%s: 6502_soundmem_w: IRQ enable: %02x\n", machine().describe_context(), data);
break;
case 0x420:
@ -1617,7 +1621,7 @@ uint16_t supracan_state::sound_r(offs_t offset, uint16_t mem_mask)
case 0x0c/2:
data = m_soundram[0x40a];
LOGMASKED(LOG_SOUND, "%s: sound_r: DMA Request flag from 6502, %08x: %04x & %04x\n", machine().describe_context(), 0xe90000 + (offset << 1), data, mem_mask);
machine().debug_break();
//machine().debug_break();
break;
default: