The MacsBug reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

MacsBug

MacsBug is a debugger for the Motorola 68000 family of processors specifically for the Apple Macintosh. MacsBug is an acronym for Motorola Advanced Computer Systems Debugger, as opposed to "Macintosh debugger."

MacsBug is a machine-level (or low-level) debugger that could be invoked by hitting the Macintosh's "Programmers Key" or, as it became later known as, the "Interrupt Key" or by pressing Command-Power-on. MacsBug offers many commands for disassembling, searching, and viewing data as well as control over machine registers and status registers. A later version of MacsBug came out that could work on the PowerPC instruction set architecture.

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