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deco_irq: alternate fix for dragngun lockup (nw)

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This commit is contained in:
hap 2018-11-24 13:09:24 +01:00
parent ac7590f8ee
commit 474a76b00d
2 changed files with 7 additions and 5 deletions
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8
src/mame/machine/deco_irq.cpp
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@ -63,7 +63,7 @@ void deco_irq_device::device_start()
// allocate scanline timer and start it
m_scanline_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(deco_irq_device::scanline_callback), this));
m_scanline_timer->adjust(m_screen->time_until_pos(0, m_screen->visible_area().right() + 1));
m_scanline_timer->adjust(m_screen->time_until_pos(0));
// register for save states
save_item(NAME(m_lightgun_irq));
@ -93,7 +93,7 @@ TIMER_CALLBACK_MEMBER( deco_irq_device::scanline_callback )
uint16_t y = m_screen->vpos();
// raster irq?
if (m_raster_irq_scanline >= visible.top() && m_raster_irq_scanline <= visible.bottom() && y == (m_raster_irq_scanline - 1))
if (m_raster_irq_scanline >= visible.top() && m_raster_irq_scanline <= visible.bottom() && y == m_raster_irq_scanline)
{
if (!m_raster_irq_masked)
{
@ -115,14 +115,14 @@ TIMER_CALLBACK_MEMBER( deco_irq_device::scanline_callback )
}
// vblank-in?
if (y == visible.bottom())
if (y == (visible.bottom() + 1))
{
m_vblank_irq = true;
m_vblank_irq_cb(ASSERT_LINE);
}
// wait for next line
m_scanline_timer->adjust(m_screen->time_until_pos(y + 1, visible.right() + 1));
m_scanline_timer->adjust(m_screen->time_until_pos(y + 1));
}

4
src/mame/video/deco16ic.cpp
View File

@ -621,7 +621,9 @@ READ16_MEMBER( deco16ic_device::pf2_data_r )
WRITE16_MEMBER( deco16ic_device::pf_control_w )
{
screen().update_partial(screen().vpos());
// update until current scanline (inclusive if we're in hblank)
int ydelta = (screen().hpos() > screen().visible_area().right()) ? 0 : 1;
screen().update_partial(screen().vpos() - ydelta);
COMBINE_DATA(&m_pf12_control[offset]);
}