A couple of years ago a cousin passed away, and I inherited a bunch of his old computers and video equipment.
Anyways, in the collection was a Pet 2001-8 that looked like it was stored in a garage or barn. It's a bit dusty, but no signs of corrosion. The tape drive needs new belts, however from what I've been able to tell is the character rom, a 6540-10, is defective. I swapped the video memory with main memory, no change. I pulled the character rom and got the same screen as I found on a troubleshooting site. I even popped in one of the other 6540's and got the expected gibberish display.
My question is where can I get an already burned 6540-10 replacement? There was someone selling an adapter board for use with a more common rom, however it appears it's no longer being sold, and I'd rather buy a drop in solution because I have no other need for an eprom burner or other resources needed to build my own adapter.
If anyone knows where I can find a complete character rom replacement, that would be awesome.
Anyways, in the collection was a Pet 2001-8 that looked like it was stored in a garage or barn. It's a bit dusty, but no signs of corrosion. The tape drive needs new belts, however from what I've been able to tell is the character rom, a 6540-10, is defective. I swapped the video memory with main memory, no change. I pulled the character rom and got the same screen as I found on a troubleshooting site. I even popped in one of the other 6540's and got the expected gibberish display.
My question is where can I get an already burned 6540-10 replacement? There was someone selling an adapter board for use with a more common rom, however it appears it's no longer being sold, and I'd rather buy a drop in solution because I have no other need for an eprom burner or other resources needed to build my own adapter.
If anyone knows where I can find a complete character rom replacement, that would be awesome.