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MacsBug is Apple's assembly-level 680x0 and PowerPC debugger for Mac OS. It can be used to debug code running in most execution environments, from applications to drivers, and everything in between. It's often used as a bug-reporting tool by many 3rd-party developers, as well as Mac OS system software developers.

This page provides a single location to get the latest version of MacsBug, as well as related hints, tips, and tricks.

If you have any questions, complaints, or words of thanks, please use the feedback page to direct them to us. We want to serve you better!



MacsBug 6.6.3

Released September 14, 2000, this is the latest final version of MacsBug. This version works with all of the machines released in the Summer of 2000, including the Power Mac G4 (uni- and multi-processor), Power Mac G4 Cube, the new iMac family (Ruby, Indigo, Sage, Graphite, and Snow), and the new iBook family (Indigo, Key Lime, and Graphite).

It includes better support for debugging MP tasks, and fixes some serious bugs in the memory setting commands when used in PCI I/O space.

Download MacsBug 6.6.3 (499K, BinHex/StuffIt 5)