CZroe
Zero's Secretary
- Joined
- Feb 5, 2017
- Posts
- 149
Was trying to diagnose an issue with scaled sprites. Turned out to be a bad cartridge. As part of troubleshooting I had socketed the BIOS for NeoDiagROM/UniBIOS and swapped the original JPN BIOS back into the system. I thought I could safely swap back to UniBIOS without my glasses. I was wrong.
Here's where it gets stupid: One pin missed the socket. When I reseated to get the pin in the socket I somehow shifted one space over and didn't catch it before powering up.
Whoops.
Now when I power up without a cartridge I get what looks to me like a green screen, but I'm color-blind and can't be too sure. You guys tell me:
https://i.imgur.com/o000mPd.png
I get garbled blocks of graphics with a game inserted but it doesn't execute/run.
If I'm right about the color it looks like NeoGeoDev says that's "Color RAM." I assume that means the Palette RAM?
I swapped in a Neo MVS BIOS ROM and just got a gray screen. NeoDiagROM and UniBIOS give me nothing. No reset/watchdog either. I've got enough boards that I can start swapping in known-good parts to isolate the problem but I thought I'd look here for direction first.
Any help is appreciated. Thanks!
Here's where it gets stupid: One pin missed the socket. When I reseated to get the pin in the socket I somehow shifted one space over and didn't catch it before powering up.
Whoops.
Now when I power up without a cartridge I get what looks to me like a green screen, but I'm color-blind and can't be too sure. You guys tell me:
https://i.imgur.com/o000mPd.png
I get garbled blocks of graphics with a game inserted but it doesn't execute/run.
If I'm right about the color it looks like NeoGeoDev says that's "Color RAM." I assume that means the Palette RAM?
I swapped in a Neo MVS BIOS ROM and just got a gray screen. NeoDiagROM and UniBIOS give me nothing. No reset/watchdog either. I've got enough boards that I can start swapping in known-good parts to isolate the problem but I thought I'd look here for direction first.
Any help is appreciated. Thanks!
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