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more notes from CharlesM, i'll implement video params later

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This commit is contained in:
Michaël Banaan Ananas 2012-09-30 21:09:29 +00:00
parent 44909366af
commit 3605f6afe1
1 changed files with 17 additions and 6 deletions
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23
src/mame/drivers/freekick.c
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@ -5,6 +5,17 @@ Free Kick - (c) 1987 Sega / Nihon System (made by Nihon, licensed to Sega)
Driver by Tomasz Slanina dox@space.pl
based on initial work made by David Haywood
Z80 @ 3MHz (12.000/4)
IRQ frequency 120Hz, low for 4.02us, high for 8.1879ms
4*SN76489AN @ 3MHz (12.000/4)
12MHz pixel clock (mclk)
263 scanlines per frame - 224 visible + 39 blanking+sync;
16 lines bottom border, 7 lines vsync, 16 lines top border
768 mclks scanline - 512 mclks visible, 256 mclks blanking+sync;
96 mclks left border, 96 mclks right border, 64 mclks sync
Notes:
- Quite interestingly, Free Kick's sound ROM contains a Z80 program, but
there isn't a sound CPU and that program isn't executed. Instead, the main
@ -628,9 +639,9 @@ MACHINE_RESET_MEMBER(freekick_state,oigas)
static MACHINE_CONFIG_START( base, freekick_state )
/* basic machine hardware */
MCFG_CPU_ADD("maincpu", Z80, XTAL_18_432MHz/6) // confirmed
MCFG_CPU_ADD("maincpu", Z80, XTAL_12MHz/4)
MCFG_CPU_PROGRAM_MAP(pbillrd_map)
MCFG_CPU_PERIODIC_INT_DRIVER(freekick_state, irq0_line_hold, 120) // frequency confirmed
MCFG_CPU_PERIODIC_INT_DRIVER(freekick_state, irq0_line_hold, 120) // measured on PCB
MCFG_CPU_VBLANK_INT_DRIVER("screen", freekick_state, freekick_irqgen)
/* video hardware */
@ -648,19 +659,19 @@ static MACHINE_CONFIG_START( base, freekick_state )
/* sound hardware */
MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_SOUND_ADD("sn1", SN76496_NEW, 12000000/4)
MCFG_SOUND_ADD("sn1", SN76489A_NEW, XTAL_12MHz/4)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MCFG_SOUND_CONFIG(psg_intf)
MCFG_SOUND_ADD("sn2", SN76496_NEW, 12000000/4)
MCFG_SOUND_ADD("sn2", SN76489A_NEW, XTAL_12MHz/4)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MCFG_SOUND_CONFIG(psg_intf)
MCFG_SOUND_ADD("sn3", SN76496_NEW, 12000000/4)
MCFG_SOUND_ADD("sn3", SN76489A_NEW, XTAL_12MHz/4)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MCFG_SOUND_CONFIG(psg_intf)
MCFG_SOUND_ADD("sn4", SN76496_NEW, 12000000/4)
MCFG_SOUND_ADD("sn4", SN76489A_NEW, XTAL_12MHz/4)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MCFG_SOUND_CONFIG(psg_intf)
MACHINE_CONFIG_END