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Asteroids 6 bullet hack

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spisi:
Problem, I don't have sockets for H2 and J2....hmmm, I'm not exactly sure which ones to replace besides 035143-02. But even that one seems to be in the wrong spot...

PL1:

--- Quote from: spisi on February 22, 2026, 04:14:38 pm ---OK, after some tough Googling...lol. I found these files and got the hack to work in MAME. If I wanted this to work on a real arcade with a PCB, I'd need to burn 5 IC chips and replace them on the board correct?

--- End quote ---
You probably won't need to burn all of them.

Compare the hash on each "asteroid.zip" file to the hash of the corresponding "asteroid6.zip" file.
- If the hashes match, that ROM was not modified for the hack ==> no need to burn a replacement.
- Pretty sure the file named "asteroid6.h2" is "035144-04e.h2"and "asteroid6.ef2" is "035145-04e.ef2"

It looks like your ROMs don't have labels on them.
- Before you burn a replacement ROM, read the old one to confirm which one it actually is.
- You may want to label them with the ROM and Revision numbers/hack name for future reference.


--- Quote from: spisi on February 22, 2026, 04:20:19 pm ---Problem, I don't have sockets for H2 and J2....hmmm, I'm not exactly sure which ones to replace besides 035143-02. But even that one seems to be in the wrong spot...

--- End quote ---
You have a 034986-02 PCB so the locations are a bit different than originally anticipated.

If you look at your Sheet 1, Side B schematic, you'll find this section that shows that there are a different number of chips and different locations on the -01 and -02 boards.
- Looks like the PROMs at J2+K1 combine into the 035143 ROM located at C1 on your board.
- Looks like the PROMs at H2+J1 combine into the 035144 ROM located at DE1 on your board.
- Looks like the PROMs at F2+H1 combine into the 035145 ROM located at F1 on your board.




Scott

spisi:
Thanks Scott! That clears it up a bit! Could you possibly recommend a reader / burner?

spisi:
So, if I'm following correctly, which I think I am. I only need to burn / replace these two chips.

spisi:
One more question. Would this be the type of replacement chip?

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