16x8 8bpp tiles appear to crash the emulator

Question

16x8 8bpp tiles appear to crash the emulator

Yazwh0 opened this issue 2 years ago · 2 comments

Example prg.

No dump file as it wrote a zero byte file.

Answer 1 · 2022-10-25T23:27:24.000Z

In the example program there, the first operation is a jmp ($FFFC), which is attempting to jump to the address in $04:$FFFC (bank 4 because it's in the BASIC interpreter). The address happens to be $FFFF, which is what it's setting the program counter to, and that's triggering the emulator's "system crash" logic, which attempts to create a dump file and then exits the emulator entirely.

Answer 2 · 2022-10-28T23:13:05.000Z

So it sounds like removing that instruction fixes the issue? Closing for now, if it turns out I was wrong then feel free to re-open.