Back in the olden Mac Plus days, I used a disassembler/monitor/mini-assembler called TMON[1] that allocated a chunk of otherwise unused memory - 256 bytes, I th

Back in the olden Mac Plus days, I used a disassembler/monitor/mini-assembler called TMON[1] that allocated a chunk of otherwise unused memory - 256 bytes, I think, called "PlayMem". Since linking on a Mac Plus took upwards of 11 minutes for our project, I'd would typically replace any particular line with a JMP $PlayMem to patch up whatever registers or memory wasn't right, and then jump back into the middle of the routine. Oh, and then there was Steve Jasik's "The Debugger"[2] which would let you crash and then switch to a (capabilities limited) MPW environment to let you edit and re-link individual routines which it would then hot-patch back in place. I think for that one, he actually shipped own linker, which was a hand patched copy of Apple's. Life in 24 bits of flat address space was more fun. Shorter, but more fun. [1] http://www.mactech.com/articles/mactech/Vol.01/01.10/TMONDebugging/index.html http://www.mactech.com/articles/mactech/Vol.01/01.10/TMONDeb... [2] http://www.jasik.com http://www.jasik.com