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tecmo16: Fixed fstarfrc titlescreen scroll timing issue [N. Gilbert, David Haywood, hap]

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This commit is contained in:
hap 2020-03-01 00:35:10 +01:00
parent 58493c9ccc
commit f609016c3a
1 changed files with 6 additions and 8 deletions
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14
src/mame/drivers/tecmo16.cpp
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@ -13,11 +13,9 @@ driver by Hau, Nicola Salmoria
special thanks to Nekomata, NTD & code-name'Siberia'
TODO:
- wrong background in fstarfrc title
(Video ref. ->
https://www.youtube.com/watch?v=EXBTNk-0ejk,
https://www.youtube.com/watch?v=5iZtgWqUz6c,
https://www.youtube.com/watch?v=cgj81VA7j_Y)
- measure video timing, especially vblank+interrupt length:
fstarfrc relies on the interrupt being held for a while,
otherwise the titlescreen background goes wrong
- there could be some priorities problems in riot
(more noticeable in level 2)
@ -337,7 +335,6 @@ void tecmo16_state::fstarfrc(machine_config &config)
/* basic machine hardware */
M68000(config, m_maincpu, MASTER_CLOCK/2); /* 12MHz */
m_maincpu->set_addrmap(AS_PROGRAM, &tecmo16_state::fstarfrc_map);
m_maincpu->set_vblank_int("screen", FUNC(tecmo16_state::irq5_line_hold));
Z80(config, m_audiocpu, MASTER_CLOCK/6); /* 4MHz */
m_audiocpu->set_addrmap(AS_PROGRAM, &tecmo16_state::sound_map);
@ -349,11 +346,12 @@ void tecmo16_state::fstarfrc(machine_config &config)
SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
m_screen->set_refresh_hz(60);
m_screen->set_vblank_time(ATTOSECONDS_IN_USEC(0));
m_screen->set_vblank_time(ATTOSECONDS_IN_USEC(1000)); // not accurate
m_screen->set_size(32*8, 32*8);
m_screen->set_visarea(0*8, 32*8-1, 2*8, 30*8-1);
m_screen->set_screen_update(FUNC(tecmo16_state::screen_update));
m_screen->screen_vblank().set(m_spriteram, FUNC(buffered_spriteram16_device::vblank_copy_rising));
m_screen->screen_vblank().set_inputline(m_maincpu, INPUT_LINE_IRQ5);
m_screen->screen_vblank().append(m_spriteram, FUNC(buffered_spriteram16_device::vblank_copy_rising));
GFXDECODE(config, m_gfxdecode, m_palette, gfx_tecmo16);
PALETTE(config, m_palette, palette_device::BLACK).set_format(palette_device::xBGR_444, 4096);