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by dentalperson
1067 days ago
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Thanks for reminding me about this. MacsBug was great. Besides being a useful development tool, MacsBug was used extensively to break shareware as well by the mac warez community. I remember seeing some guides about it that were very illuminating about how program execution and object code actually worked that made things click for me. It was also a time when any consumer could issue a system interrupt with the same two keystrokes because it was built into mac OS, and see the cpu registers and enter hex to change the program flow. Since there was not as clean a system/program barrier as there was today and single threaded OS (I think?), before OS 8 the system froze all the time because of apps, and even non-expert users memorized the hex code for the system exit() trap. |
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