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Released: NBA Rewind 4 Jam (was: NBA Jam TE hacking.)

What speed EPROMS do I need to use for this awesome hack? I can't get to my board currently to check it.

Thanks!

Edit, found it in the schematics.
 
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Asure said:
Enjoy.

If you're gonna wipe the existing rom set, please check if it's an undumped version first.
Click to expand...
Will do. I assume I can confirm on the rom check screen and then Google to see if said version is dumped?
 
I am looking to burn these for someone on the board - it looks like a good number of M27C4001 are needed (120 speed). Is that the only size needed, or is there another one needed?
 
EDIT:
Use 27C4001 or 27C040 at 120ns speed or faster for all of the files but one. Use 27C010 for l2_nba_jam_u3_sound_rom.u3 on the sound board.
 
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Asure said:
Enjoy.

If you're gonna wipe the existing rom set, please check if it's an undumped version first.
Click to expand...
I had one that was undumped, so they are out there for sure.
I got it dumped and sent in with some help with the peeps here.
I think one of the PROMs I had was helpful.

Thanks to all those who work to preserve these for us to play.
 
I had NBA Jam Rewind roms burned for me, but was not successful in getting it working on my TE board. Did a bunch of rom swapping to try to find a smoking gun and eventually narrowed down to consistent behavior where soon as either or both of UG12 & UJ12 were replaced, the game would load to a black screen, regardless of which other roms were on the board, Rewind or original TE. Conversely, soon as both stock chips were back on the board, the game plays without issue.

Before I have anything burned again, just want to be sure that version 1.2 linked on this thread has worked fine for others on original TE hardware. Would love feedback from someone that has done this successfully. If so, I'm gonna assume that burning another copy of either or both UG12 & UJ12 might do the trick for me.
 
For original TE hardware, the two program roms UG12 & UJ12 should be all that's needed to at least boot the game and enter diag mode.
Even the fonts for diag are inside the main program roms.

If both the original and rewind roms failed to boot on your TE board, something is wrong.
Likely, they were wrong speed, or wrong burns. If you don't own a burner, it's hard to dump them to verify this theory.
Other than that: You should always get a bootup screen with diag info.

You can post pictures of the two stock roms on your board and the large square ic's on the game PCB. (preferably the sticker on the square chip near the jamma connector, this read something like " REV X.X (C) WMS ...".)

You might have some oddball revision that we love to see.
 
Original roms work fine, only the Rewind ones don't work.

Test mode says I'm running REV 1.00
Screenshot_20240528_183314_Chrome.jpg
 
Original JAM (non-TE) PCB, burned all the ROMs except those that are currently green (which I might have misunderstood in the readme.txt file -- it said burn them all, then it says maybe skip those 4). I also only replaced the U12 andn U13 on the soundboard, as I didn't realize the U3 ROM was a different type of EPROM. I also don't have any more of the other EPROM types, as I only ordered 16, and cannot replace the originals that are in green on the diagnostic yet.

The game seems to run just fine, however, with maybe some sounds triggering incorrectly at times, but since I didn't really play this game much, I can't be sure.

Is my problem stemming from needing to replace UJ14/UG14 and UJ19/UG19 with the modified ROMs as well?

Thanks!
 

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From NBA Jam to NBA Jam TE those 4 roms did not change. You can keep the original roms on that board, they will test green.

For NBA Jam TE Rewind, the red roms were changed to add Jordan and Shaq. So that's OK, unless someone fixes that, but it will confuse others.
I did think they fixed it for Rewind, not sure. I didn't make Rewind, just hacked it :)

The sound board rom(s) in the archive are not good, i meant to make a new set but didn't get free time yet. Maybe someone can post a fixed and i'll update that in the first post.
 
To clarify:

NBA Rewind 4 JAM is to use TE ROMS on a regular JAM board
NBA Jam TE Rewind is to use on an TE board

Is that correct?

Also, to get good sound ROM files, if someone else doesn't do it, where would I look to get patches or whatever is needed to make them correct? your github?
 
Thanks for all the work. This is awesome.

I'm going to follow that with a couple questions that show my lack of knowledge. ;)

1. Am I correct in assuming I can just have my original EEPROMs rewritten or do I need to replace those?
2. Is there a list of what versions haven't been dumped yet? If 1 is correct, I don't want to delete a piece of history.
3. Do I need my sound files updated as well?
 
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