What is TMON?

A debugger is a special program that can survive a system crash and provide a picture of events in the computer’s registers and RAM as the crash occurred, something like the black-box recorder on aircraft. The debugger hides in the background while a program is running and appears with a report when a crash happens; it can also be invoked to examine program workings at the machine level during normal operation. By examining the last instructions executed immediately before the crash, a programmer can identify the piece of program code that called up the dreaded bomb.

MACSBug (Motorola Advanced Computing Systems Debugger) is probably the most widely available Macintosh debugger; it’s bundled with languages like LightspeedC and Turbo Pascal. In spite of that, the debugger of choice for Macintosh programming is TMON from ICOM Simulations.

The latest version (2.8) is still recognizably TMON, but new features make up almost 30 percent of tlie program. Upgrade items include 68020 support and support for nearly all varieties of large screens (a tricky programming area). Also new in version 2.8 are movable/scrollable/resizable windows, support for the SE/II Reset key (the mystery key at the top of the new keyboards), a calculator for hex arithmetic, and a function for restarting “frozen” mice.

Seiter, Charles. (February 1988). RAID on a Disk. Macworld. (pg. 203).

Download TMON for Mac

Architecture

Motorola 68K

System Requirements

From Mac OS 1.0 up to Mac OS 6.0

Compatibility notes

• Version 2.8 Requirements
  • Macintosh 512K or later

Emulating this? It could probably run under: Mini vMac