I just bought a Startropics cartridge off of eBay.
It has a weird problem.
Tiles 28,29,2A,2B,2C,2D,2E and A8,A9,AA,AB,AC,AD,AE on both pattern tables have corrupt left nibbles. The low 8 bytes of the tile are sometimes okay on font tiles, but on other tiles it's not. It seems to me like an address line or data line problem triggered by certain addresses.
Is there anything that can be done about that kind of problem?
It has a weird problem.
Tiles 28,29,2A,2B,2C,2D,2E and A8,A9,AA,AB,AC,AD,AE on both pattern tables have corrupt left nibbles. The low 8 bytes of the tile are sometimes okay on font tiles, but on other tiles it's not. It seems to me like an address line or data line problem triggered by certain addresses.
Is there anything that can be done about that kind of problem?