universal/cosmic.cpp: Dumped and added a new Space Panic set

[clawgrip]

New WORKING clone

Space Panic (set 4) [David Bosque, ClawGrip]

Also reformatted single line comments.

[cuavas]

Have you examined the differences between this and the other sets at all? It looks like all the ROMs are different. Are the changes in code or data?

[clawgrip]

Have you examined the differences between this and the other sets at all? It looks like all the ROMs are different. Are the changes in code or data?

Six new ROMs, all in maincpu region, with small changes, from 1% to 2.5%. I've been playing for a while and it seems to work fine. The PCB is Universal original, the ROMs are on good shape and I got stable reads, reading each ROM five times, ensuring all pin contacts were fine (as I always do).

It's far from my skills telling what the differences are, sorry.

[cuavas]

I’m just a bit concerned that it’s bit rot with some of these – the existing sets all share the same ROM at position 6, so it’s a surprise to find one that has all unique ROMs. They’re over forty years old now, so the EPROMs could be losing data even if they’ve been stored properly. With small changes like that, it could be a minor code update, but it could also be the beginning of bit rot.

I know disassembling the ROMs is a pile of work, but hopefully someone gives it the TCRF treatment at some point.