TheMagicianLord
Rugal's Thug
- Joined
- Jun 8, 2019
- Posts
- 96
Found this basic NeoBiosMasta on eBay and ordered for an MV1B board. It took me 2 hours of troubleshooting before I realized the BIOS IC and socket were actually installed backwards (it came to me that way). I ended up putting a different BIOS in just in case the one installed backwards was damaged. Unfortunately, it didn't help. I've probably installed and removed the board from the 68000 about 30 times now, but get nothing but graphical junk on the screen. I originally had the wires soldered to the CE and OE points, but during the frustrating process of troubleshooting, the CE wire came loose, so I had to resolder it to the point where the original BIOS mounts. I also removed and resoldered the OE point a few times during this process, so unfortunately it looks worse now than when I started. I only wish I had realized the BIOS was backwards two hours earlier.
I've been unable to find any sort of printed install guide for the NeoBiosMasta. Just video installs, which are all the same and show lifting pin 2 and 20. But then I read in some thread on this forum that these CE/OE wires may not even be needed if there's no original BIOS? Can't confirm this, though, because can't find an actual install guide.
All that said, I've tried about every variation: wires, no wires, cleaned contacts multiple times with deoxit and IPA. Can't get anything besides a graphical jumble. Is it possible the initial BIOS being backwards permanently damaged the MV1B board?
In the photo, I've still got the wires attached to the motherboard, but they're disconnected from the NBM. Does anyone know if I need them?
In any case, I'm at a loss. I'm not sure how these installs go so smoothly for everyone else. This is my second one and its a bigger nightmare than the first.
I've been unable to find any sort of printed install guide for the NeoBiosMasta. Just video installs, which are all the same and show lifting pin 2 and 20. But then I read in some thread on this forum that these CE/OE wires may not even be needed if there's no original BIOS? Can't confirm this, though, because can't find an actual install guide.
All that said, I've tried about every variation: wires, no wires, cleaned contacts multiple times with deoxit and IPA. Can't get anything besides a graphical jumble. Is it possible the initial BIOS being backwards permanently damaged the MV1B board?
In the photo, I've still got the wires attached to the motherboard, but they're disconnected from the NBM. Does anyone know if I need them?
In any case, I'm at a loss. I'm not sure how these installs go so smoothly for everyone else. This is my second one and its a bigger nightmare than the first.