Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-05-22 21:58:57 +03:00
Code Issues Actions 3 Packages Projects Releases Wiki Activity

Triple Punch/Knock Out AY-3-8910 clock speed was incorrect, fixed and verified from real hardware. [plgDavid]

Browse Source 
Verified clocks and oki pin on quiz channel question boardset. [plgDavid]
This commit is contained in:
Jonathan Gevaryahu 2010-09-17 02:37:31 +00:00
parent c181febddc
commit cbcfc6a7fa
2 changed files with 31 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
src/mame/drivers/ddenlovr.c
View File

@ -7835,7 +7835,7 @@ static INTERRUPT_GEN( rtc_irq )
static MACHINE_CONFIG_START( quizchq, dynax_state )
/* basic machine hardware */
MDRV_CPU_ADD("maincpu", Z80, 8000000) /* ? */
MDRV_CPU_ADD("maincpu", Z80, XTAL_16MHz/2) /* Verified */
MDRV_CPU_PROGRAM_MAP(quizchq_map)
MDRV_CPU_IO_MAP(quizchq_portmap)
MDRV_CPU_VBLANK_INT("screen", quizchq_irq)
@ -7860,11 +7860,11 @@ static MACHINE_CONFIG_START( quizchq, dynax_state )
/* sound hardware */
MDRV_SPEAKER_STANDARD_MONO("mono")
MDRV_SOUND_ADD("ymsnd", YM2413, 3579545)
MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.80)
MDRV_SOUND_ADD("ymsnd", YM2413, XTAL_28_63636MHz/8) // 3.579545Mhz, verified
MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.50)
MDRV_OKIM6295_ADD("oki", 1022720, OKIM6295_PIN7_HIGH) // clock frequency & pin 7 not verified
MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.80)
MDRV_OKIM6295_ADD("oki", XTAL_28_63636MHz/28, OKIM6295_PIN7_HIGH) // clock frequency verified 1.022MHz, pin 7 verified high
MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
/* devices */
MDRV_MSM6242_ADD("rtc")
@ -8607,7 +8607,7 @@ N73SUB
CPU: TMPZ84C015BF-8
Sound: YM2413
M6295
M6295 - 1.022Mhz pin 7 HI? (unverified from jpn ver)
OSC: 16MHz
28.6363MHz
@ -8640,6 +8640,30 @@ ROM_START( quizchq )
ROM_LOAD( "nwc7301.1f", 0x00000, 0x80000, CRC(52c672e8) SHA1(bc05155f4d9c711cc2ed187a4dd2207b886452f0) ) // 2 banks
ROM_END
/***************************************************************************
Quiz Channel Question (Chinese ver.)
(c)1993 Laxan (licensed from Nakanihon)
N7311208L1-2
N73SUB
CPU: TMPZ84C015BF-8 @8mhz (16MHz/2) (verified)
Sound: YM2413 - 3.579545MHz (28.6363/8) (verified)
M6295 - 1.022MHz (28.6363/28); pin 7 HI (verified)
OSC: 16MHz - cpu
28.6363MHz - ym2413 and m6295
32.768KHz - RTC
Custom: NL-002 - Nakanihon
(1108F0405) - Dynax
(1427F0071) - Dynax
Others: M6242B (RTC)
***************************************************************************/
ROM_START( quizchql )
ROM_REGION( 0x118000, "maincpu", 0 ) /* Z80 Code + space for banked RAM */
ROM_LOAD( "2.rom", 0x00000, 0x80000, CRC(1bf8fb25) SHA1(2f9a62654a018f19f6783be655d992c457551fc9) )

1
src/mame/drivers/scramble.c
View File

@ -1418,6 +1418,7 @@ static MACHINE_CONFIG_DERIVED( triplep, scramble )
/* sound hardware */
MDRV_SOUND_MODIFY("8910.1")
MDRV_SOUND_CLOCK(18432000/12) // triple punch/knock out ay clock is 1.535MHz, derived from main cpu xtal; verified on hardware
MDRV_SOUND_CONFIG(triplep_ay8910_interface)
MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)