3 ms·

I still remember the machine code for 2 important instructions to use in Macsbug: 0xA9FF for a breakpoint and 0x4E75 for returning from the current stackframe.

I still remember the machine code for 2 important instructions to use in Macsbug: 0xA9FF for a breakpoint and 0x4E75 for returning from the current stackframe. We'd debug and insert breakpoints by directly overwriting the program code in RAM.

dmitrygr 2y ago
4E71 was nice for … ahem… discounts on shareware software?
- saagarjha 2y ago
  Nop, that would be unethical