I've read several VDP docs and I don't see any gotchas. However in my side-scrolling engine I (seem to) have issues with reading tile values at the edges of the buffer. Say the screen is set up as 64x64 tiles I'd have trouble reading values at the 64th column or row.
Probably chasing a red herring (or my own sloppy code) but I thought I'd ask if reading tile values from vram can have issues.
Probably chasing a red herring (or my own sloppy code) but I thought I'd ask if reading tile values from vram can have issues.