Minus4 (http://plus4.emucamp.com/tools/Minus4w) reveals the pulsating heart of C16/Plus4 software!
Mike has updated Minus4 and included some advanced development features.
A much improved debugger with better disassembly viewing (complete with symbols) and breakpoint control. Along with this is a new sophisticated realtime profiler which allows you to get detailed read/write/execute information all in realtime.
Along with this is a new version of the SNasm (http://plus4.emucamp.com/tools/snasm) assembler, which will output the needed symbol information for the new Minus4 debugger, along with that is some new support for a few of the better undocumented opcodes.
ttp://minus4.plus4.net/