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ygv608.cpp: h/vblank status bits (nw)

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This commit is contained in:
angelosa 2017-06-29 03:18:07 +02:00
parent a19b7271d5
commit f8edbbe362
1 changed files with 5 additions and 2 deletions
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7
src/mame/video/ygv608.cpp
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@ -1469,7 +1469,8 @@ READ8_MEMBER(ygv608_device::register_data_r)
***/
READ8_MEMBER( ygv608_device::status_port_r )
{
return m_screen_status;
// TODO: we need to use h/vpos in case of border support instead due of how MAME framework works here.
return (m_screen_status & 0x1c) | (m_screen->hblank()<<1) | m_screen->vblank();
}
// P#7R - system control port
@ -1643,6 +1644,8 @@ WRITE8_MEMBER( ygv608_device::status_port_w )
{
/* writing a '1' resets that bit */
m_screen_status &= ~data;
// send an irq ack to the delegates accordingly
if(data & 8)
m_vblank_handler(0);
if(data & 0x10)
@ -1977,7 +1980,7 @@ WRITE8_MEMBER( ygv608_device::crtc_w )
m_crtc.vtotal &= ~0xff;
m_crtc.vtotal |= data & 0xff;
// TODO: call it for all mods in the CRTC
// TODO: call it for all mods in the CRTC, add sanity checks
screen_configure();
//printf("V %d %d %d %d %d\n",m_crtc.vtotal,m_crtc.display_vstart,m_crtc.display_height,m_crtc.display_vsync,m_crtc.border_height);