 No.00620
Tafoid Administrator
Apr 8, 2008, 17:31
edited on: Apr 8, 2008, 17:32
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I posted about this about 6 months back but nothing was ever done. http://www.mameworld.info/ubbthreads/showthreaded.php?Cat=&Board=mametesters&Number=128213 There were 2 U releases where work was documented to have been done on the driver: 0.94u2 (most likely when watchdog was set up) and 0.94u5. I suspect regression with one of those. I was only able to test 0.94 as working, 0.95 with the problem.
0.94u2:
segaxbd: tweaks
- added hack to make GP Rider boot; input bug prevents full playability
- fixed IRQ handling to match schematics
- hooked up watchdog, sound reset, and global mute
- hooked up dummy CPU for running SMGP communications
- reduced interleave on all games except LOF
0.94u5:
segaxbd.c:
* fixed missing sound in rachero/abcop
* used explicit sync to get rid of high interleave on loffire
* marked 317-0136.key bad until Nicola fixes it
* marked loffire as working now that the divide chip is better
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 No.02953
CharlesM Developer
Nov 1, 2008, 03:11
edited on: Nov 1, 2008, 03:20
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Watchdog details: The MB3773 will assert reset 220ms after the last negative edge on its clock input. It asserts reset for 44ms. The clock input is controlled by two jumpers: S35 shorted, S36 open : Clock input connected to /WDC. S35 open, S36 shorted : Clock input connected to /GXINT. The former is manual (68000 program must toggle PC6 (/WDC) of CXD1095 @ IC160), the latter is automatic (/GXINT asserted once per frame by tilemap chip). Somebody with a SMGP board should confirm the jumper settings. If the watchdog timeout length is suspect, check the value of capacitor C51 near the MB3773. Schematics say it is 2.2uF. |
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No.07243
Tafoid Administrator
Feb 19, 2011, 22:25
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Confirmed 0.94u2 breakage with freshly build binary |
 No.15875
MetalGod Senior Tester
Dec 8, 2018, 01:23
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I've done some testing It seems to be fixed since mame 0.185 Driver improvements on that version: -segaxbd.cpp: Rewrote CXD1095 as a device and also add it to megaplay.cpp, megatech.cpp, cyclwarr, and bigfight. [AJR] |