MAMEWorld Central >> EmuChat
View all threads Index   Flat Mode Flat  

dkongjr
MAME Fan
Reged: 03/25/16
Posts: 45
Send PM
Star Wars Arcade (SEGA, 1993): fixing model1 emulation
03/25/16 01:15 PM



Quote:


The model1 games include somewhere on the board a pair of dsps called TGPs, or MB86233. One is used for T&L, one is used for generalized math operations. The same structure exists in model 2a. The T&L program happens not to be a problem, we're experienced enough to be able to guess what it does and it doesn't seem to change per-game. The math dsp program changes per-game.

In the case of 2a, the math dsp program is uploaded by the main program. From there we've been able to understand how the dsp itself works (it's essentially undocumented otherwise). That made 2a working, and we found out that virtua racing expects essentially the same program than daytona usa.

For the other three games, otoh, we don't have the program. Nobody has even been able to find where in the pcb it is hiding, making decapping a chancy proposition. What is currently working in mame is the result of complete guesswork, see src/machine/model1.c. So if you want to see swa working, you need to continue the guesswork.

Some hints I can give:

- the understanding of the dsp and the use of the daytona program for vr happened *after* the guesswork happened. That means there may be clues about what the functions are supposed to do in the 2a programs
- there is a tgp-accessible rom that the program does lookups into. It was hooked up in vr before the daytona use (the track_* functions). It was not hooked up in swa/wingwar in no small part because someone has to find out which function is supposed to do the lookup in the first place. Only hint I have: acc_seti is probably track_select swa version in reality (which won't change much, there's only one "track" in swa, the parameter is always 0).




http://www.mameworld.info/ubbthreads/sho...amp;o=&vc=1


In that post there Olivier Galibert talks about some "guesswork". I'd like to try poking around, so any more info is welcome. Does this "guesswork" involve changing something in the ROM files, maybe trying to load some parts from a different game? Or is it about making changes in the source code only, and if so what parts of the code should I be looking at?







Entire thread
Subject Posted by Posted on
* Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr 03/25/16 01:15 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/20/16 12:08 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Roman  04/20/16 12:55 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/20/16 01:23 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  04/20/16 04:06 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation SailorSat  06/25/16 09:03 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation John IV  04/20/16 05:24 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  04/20/16 09:15 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation jonwil  04/08/16 02:23 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation jonwil  04/05/16 01:28 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  04/05/16 05:15 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation AaronGiles  04/05/16 06:59 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  04/05/16 02:33 PM
. * May the Force be with you SmitdoggAdministrator  03/30/16 03:27 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  03/26/16 04:40 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation drewcifer  03/27/16 09:19 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  03/27/16 02:35 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation gregf  03/27/16 07:55 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  03/28/16 10:31 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  03/29/16 03:28 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  03/29/16 03:13 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  03/29/16 06:24 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Ville Linde  03/29/16 06:35 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Osso1  03/29/16 06:43 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  03/30/16 07:15 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation MooglyGuy  03/30/16 08:28 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  03/30/16 09:23 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  03/30/16 04:46 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  03/30/16 09:59 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  03/30/16 12:30 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Ville Linde  03/30/16 03:11 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  03/31/16 12:22 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Traso  04/07/16 05:37 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/02/16 06:52 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/04/16 02:53 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Ville Linde  04/04/16 05:37 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/04/16 09:26 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  04/04/16 10:55 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/05/16 07:15 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  04/05/16 10:39 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  04/06/16 05:57 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  04/06/16 07:48 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/07/16 11:42 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Ville Linde  04/07/16 05:28 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/07/16 09:04 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  04/07/16 11:16 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/08/16 06:32 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  04/08/16 07:05 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/08/16 11:22 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/09/16 12:03 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/10/16 07:50 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Ville Linde  04/11/16 07:45 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/11/16 08:36 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Ville Linde  04/11/16 08:50 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  04/11/16 10:42 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/15/16 03:50 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/15/16 11:35 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  04/19/16 07:39 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/20/16 12:49 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Haze  04/20/16 01:00 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  04/20/16 04:38 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/20/16 09:35 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  04/20/16 10:20 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/21/16 12:39 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/28/16 10:35 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/28/16 04:26 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation uman  04/29/16 01:12 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation lettuce  05/02/16 04:14 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation terminento  05/10/16 05:29 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation MooglyGuy  05/10/16 05:52 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation terminento  05/10/16 06:07 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Artman99  06/15/16 05:48 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  06/15/16 07:36 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Ville Linde  06/16/16 07:28 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  06/16/16 07:47 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Artman99  06/16/16 02:44 AM
. * Hi Bart Simo *nt* MooglyGuy  06/16/16 06:19 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  06/16/16 05:14 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Artman99  06/16/16 08:24 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation gamez fan  05/11/16 12:28 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation MooglyGuy  05/10/16 06:27 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation terminento  05/10/16 07:01 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation terminento  05/10/16 11:48 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  05/11/16 05:49 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  05/11/16 04:14 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  05/11/16 05:37 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation DarthMarino  05/11/16 02:57 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation terminento  05/11/16 02:18 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Anonymous  05/11/16 01:19 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  05/12/16 04:52 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation terminento  05/14/16 04:10 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Vas Crabb  05/11/16 04:25 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Anonymous  05/11/16 07:16 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Envisaged0ne  05/11/16 06:55 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Anonymous  05/11/16 07:34 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation terminento  05/11/16 08:36 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  04/22/16 05:16 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation LensLarque  04/15/16 11:47 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/11/16 09:40 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/13/16 07:40 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  04/13/16 09:33 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/13/16 10:34 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation R. Belmont  04/14/16 05:02 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/14/16 05:57 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation MooglyGuy  04/14/16 01:41 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/14/16 06:22 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Master O  04/14/16 04:44 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Ziggy100  04/15/16 10:23 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Master O  04/15/16 11:42 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation joey35car  04/12/16 12:46 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/08/16 12:10 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  04/08/16 08:17 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/08/16 01:11 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/05/16 11:17 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  04/05/16 11:45 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/05/16 11:53 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/05/16 11:45 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/05/16 03:21 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Ville Linde  04/05/16 07:00 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/05/16 11:18 AM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Ville Linde  04/05/16 01:23 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  04/05/16 02:46 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation MooglyGuy  04/04/16 03:41 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation Olivier Galibert  03/25/16 02:17 PM
. * Re: Star Wars Arcade (SEGA, 1993): fixing model1 emulation dkongjr  03/25/16 06:18 PM

Extra information Permissions
Moderator:  redk9258, URherenow, Tafoid 
1 registered and 23 anonymous users are browsing this forum.
You cannot start new topics
You cannot reply to topics
HTML is enabled
UBBCode is enabled
Thread views: 15402