AtomicBomb
Member
I'm having some trouble with my Gyruss machine, and have narrowed down my problems to EPROM issues.
I'm still new to reprogramming EPROMs, but I think I know enough to make me dangerous. My programmer seems to be functioning and reading data properly.
So the problem I'm having is that I downloaded the Gyruss rom set from teh internets and there's a different number of files than I have EPROMS for. The Gyruss data set I downloaded (which seems to work just fine with MAME) has 9 files labeled gyrussk.(1-9), I have a gyrussk.(1-3)a, and I have gyrussk.pr(1-3), and I downloaded 2 different copies from different locations, both with exactly the same data.
My Gyruss eproms are labeled 1-13 (missing #4). Gyruss is a 2 board set and the sound and power board contains Roms 11-13. I THINK these refer to gyrussk.(1-3)a but I'm not sure. Could be gyrussk.pr(1-3). I opened gyrussk.pr(1-3) and they all contain VERY little data. I think 1 and 2 contain 16x16 blocks of data, where as 3 only contains 2x16.
Either way, I'm more concerned about the main set, and the fact that they're labeled 1-9 where as I have 1-10 with 4 omitted. Should I just be subbing in set 4 from the MAME rom into my #5 EPROM and so on?
Whats throwing me off is I started with EPROM #1, read the data off of it, and started comparing it to ROM 1 from the MAME data, but they were DRAMATICALLY different. I did the same with #2, and again, DRAMATICALLY different. Should I assume they're all bad? Should I re-burn the whole set? Is it okay to drop 1 chip worth of "MAME data" in with the rest of my supposedly good eproms?
I'm still new to reprogramming EPROMs, but I think I know enough to make me dangerous. My programmer seems to be functioning and reading data properly.
So the problem I'm having is that I downloaded the Gyruss rom set from teh internets and there's a different number of files than I have EPROMS for. The Gyruss data set I downloaded (which seems to work just fine with MAME) has 9 files labeled gyrussk.(1-9), I have a gyrussk.(1-3)a, and I have gyrussk.pr(1-3), and I downloaded 2 different copies from different locations, both with exactly the same data.
My Gyruss eproms are labeled 1-13 (missing #4). Gyruss is a 2 board set and the sound and power board contains Roms 11-13. I THINK these refer to gyrussk.(1-3)a but I'm not sure. Could be gyrussk.pr(1-3). I opened gyrussk.pr(1-3) and they all contain VERY little data. I think 1 and 2 contain 16x16 blocks of data, where as 3 only contains 2x16.
Either way, I'm more concerned about the main set, and the fact that they're labeled 1-9 where as I have 1-10 with 4 omitted. Should I just be subbing in set 4 from the MAME rom into my #5 EPROM and so on?
Whats throwing me off is I started with EPROM #1, read the data off of it, and started comparing it to ROM 1 from the MAME data, but they were DRAMATICALLY different. I did the same with #2, and again, DRAMATICALLY different. Should I assume they're all bad? Should I re-burn the whole set? Is it okay to drop 1 chip worth of "MAME data" in with the rest of my supposedly good eproms?