Indeed it's rare, but not unheard of. For example the "nocash" series of emulators has extensive debug support (breakpoints, memory viewers, disassemblers, hard

Indeed it's rare, but not unheard of. For example the "nocash" series of emulators has extensive debug support (breakpoints, memory viewers, disassemblers, hardware traps, etc) http://nocash.emubase.de http://nocash.emubase.de is the website if you want to check them out.