byemu wrote:
byemu wrote:
Can and how CPU read and write the exram 5c00~5fff?
I found a bug in Nintendulator!
the emu can not debug exram!
That's a feature, not a bug - the entire region of $5000-$5FFF (the smallest PRG bank size) is classified as "I/O registers"*, so the debugger refuses to read from it to display code/data on the grounds that it could have side effects that disrupt emulation (e.g. if you scrolled to $5204, it would read the IRQ status register and unknowingly acknowledge a pending interrupt).
* technically, it's anything I/O handler other than "Read Builtin RAM", "Read PRG ROM/RAM", or "Read PRG ROM through Game Genie"