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quasar: set VIDEO_ALWAYS_UPDATE because of collision flag in screen update

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hap 2024-11-23 18:38:12 +01:00
parent 146c0b9191
commit 8a3e440d9c
1 changed files with 20 additions and 22 deletions
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42
src/mame/cvs/quasar.cpp
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@ -3,21 +3,18 @@
/************************************************************************
Zaccaria S2650 '80s games
Zaccaria Quasar
Driver by Mike Coates and Pierpaolo Prazzoli
Driver by Mike Coates and Pierpaolo Prazzoli
TODO:
TODO:
- Sound (missing invader effect - still not sure all noise in correct places)
- Phase 3 - seems awfully hard - dip settings ?
- Hook up Coin Counter
- Test/Service Mode - not working?
- No attract demo? is this correct?
Quasar
------
- Sound (missing invader effect - still not sure all noise in correct places)
- Phase 3 - seems awfully hard - dip settings ?
- Hook up Coin Counter
- Test/Service Mode - not working?
- No attract demo? is this correct?
************************************************************************
*************************************************************************
Quasar by Zaccaria (1980)
@ -287,10 +284,10 @@ void quasar_state::video_w(offs_t offset, uint8_t data)
{
switch (m_page)
{
case 0: m_video_ram[offset] = data; break;
case 1: m_color_ram[offset] = data & 7; break; // 3 bits of ram only - 3 x 2102
case 2: m_effectram[offset] = data; break;
case 3: m_effectcontrol = data; break;
case 0: m_video_ram[offset] = data; break;
case 1: m_color_ram[offset] = data & 7; break; // 3 bits of ram only - 3 x 2102
case 2: m_effectram[offset] = data; break;
case 3: m_effectcontrol = data; break;
}
}
@ -300,10 +297,10 @@ uint8_t quasar_state::io_r()
switch (m_io_page)
{
case 0: ans = m_in[0]->read(); break;
case 1: ans = m_in[1]->read(); break;
case 2: ans = m_dsw[0]->read(); break;
case 3: ans = m_dsw[1]->read(); break;
case 0: ans = m_in[0]->read(); break;
case 1: ans = m_in[1]->read(); break;
case 2: ans = m_dsw[0]->read(); break;
case 3: ans = m_dsw[1]->read(); break;
}
return ans;
@ -322,7 +319,7 @@ void quasar_state::sh_command_w(uint8_t data)
// lower nibble = command to I8035
// not necessarily like this, but it seems to work better than direct mapping
// (although schematics has it as direct - but then the schematics are wrong elsewhere to!)
m_soundlatch->write((data & 8) + ((data >> 1) & 3) + ((data << 2) & 4));
m_soundlatch->write(bitswap<4>(data,3,0,2,1));
}
uint8_t quasar_state::sh_command_r()
@ -332,7 +329,7 @@ uint8_t quasar_state::sh_command_r()
int quasar_state::audio_t1_r()
{
return (m_soundlatch->read() == 0);
return m_soundlatch->read() == 0;
}
// memory map taken from the manual
@ -541,6 +538,7 @@ void quasar_state::quasar(machine_config &config)
// video hardware
SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
m_screen->set_video_attributes(VIDEO_ALWAYS_UPDATE);
m_screen->set_refresh_hz(50); // From dot clock
m_screen->set_vblank_time(ATTOSECONDS_IN_USEC(2500)); // not accurate
m_screen->set_size(256, 256);