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ElSemi
MAME Fan
Reged: 02/20/07
Posts: 31
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Re: Model 2 Emulator v1.0
01/02/11 12:39 PM


Yes, it was a TGP bug (in an opcode that only VF2 uses).
Dual Move, mode 1: load RAM to A and External to B, the
registers used to index these were swapped (A RAM must be indexed by r0+r2 and B External by r1+r3), that caused reading far beyond RAM size, reading garbage and actually looking quite good by chance . It was when I reordered some values in the context structure that caused it reading different values, and showed garbage polys when I realized where the problem was.
I'm adding some assert to RAM access to check the limits to see if there is another wrong opcode somewhere else.







Entire thread
Subject Posted by Posted on
* Model 2 Emulator v1.0 Sune 01/01/11 08:23 AM
. * Re: Model 2 Emulator v1.0 RetroRepair  01/17/11 08:50 PM
. * Re: Model 2 Emulator v1.0 Naoki  01/01/11 06:23 PM
. * Re: Model 2 Emulator v1.0 ElSemi  01/01/11 08:09 PM
. * Re: Model 2 Emulator v1.0 Naoki  01/01/11 08:23 PM
. * Re: Model 2 Emulator v1.0 Hadou Ken  01/01/11 09:42 PM
. * Re: Model 2 Emulator v1.0 Naoki  01/01/11 10:59 PM
. * Re: Model 2 Emulator v1.0 Chine  01/01/11 08:18 PM
. * Re: Model 2 Emulator v1.0 R. Belmont  01/01/11 08:25 PM
. * Re: Model 2 Emulator v1.0 Chine  01/01/11 09:10 PM
. * Re: Model 2 Emulator v1.0 CrapBoardSoftware  01/02/11 05:15 AM
. * Re: Model 2 Emulator v1.0 R. Belmont  01/02/11 06:39 AM
. * Re: Model 2 Emulator v1.0 ElSemi  01/02/11 12:39 PM
. * Re: Model 2 Emulator v1.0 Naibo  01/04/11 10:27 PM
. * Re: Model 2 Emulator v1.0 CiroConsentino  01/02/11 01:48 PM
. * Re: Model 2 Emulator v1.0 AndyGeezer  01/02/11 01:27 PM
. * Re: Model 2 Emulator v1.0 Naoki  01/02/11 05:04 PM
. * Re: Model 2 Emulator v1.0 AndyGeezer  01/02/11 06:55 PM
. * Re: Model 2 Emulator v1.0 Nomax  01/04/11 01:10 PM
. * Re: Model 2 Emulator v1.0 AndyGeezer  01/04/11 01:25 PM
. * Re: Model 2 Emulator v1.0 Outrun2006  01/05/11 09:43 AM
. * Re: Model 2 Emulator v1.0 Nomax  01/04/11 02:00 PM
. * Re: Model 2 Emulator v1.0 AndyGeezer  01/05/11 01:07 PM
. * Re: Model 2 Emulator v1.0 Outrun2006  01/05/11 05:09 PM
. * Re: Model 2 Emulator v1.0 AndyGeezer  01/05/11 07:34 PM
. * Re: Model 2 Emulator v1.0 R. Belmont  01/05/11 11:37 PM
. * Re: Model 2 Emulator v1.0 Nomax  01/06/11 02:47 AM
. * Re: Model 2 Emulator v1.0 AndyGeezer  01/06/11 11:48 AM
. * Re: Model 2 Emulator v1.0 Outrun2006  01/06/11 04:05 PM
. * Re: Model 2 Emulator v1.0 Nomax  01/07/11 01:16 PM
. * Re: Model 2 Emulator v1.0 Outrun2006  01/07/11 03:00 PM
. * Re: Model 2 Emulator v1.0 Naoki  01/06/11 04:45 PM
. * Re: Model 2 Emulator v1.0 Naoki  01/06/11 02:55 AM
. * Re: Model 2 Emulator v1.0 Naoki  01/02/11 10:28 PM
. * Re: Model 2 Emulator v1.0 Cable  01/01/11 06:23 PM
. * Re: Model 2 Emulator v1.0 CiroConsentino  01/01/11 02:30 PM
. * Re: Model 2 Emulator v1.0 GreatLamer  01/01/11 10:27 PM

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