INT 03 - DTown Utilities - POP UP Program: DTown Software Development's DTown Utilities contains various tools which are useful to programmers, such as a memory viewer and disassembler Note: DTU pops up on INT 03 (if not hooked by a debugger) to allow the user to inspect memory or code when the machine crashes; various memory managers will invoke INT 03 when displaying a CPU(Central Processing Unit) The microprocessor which executes programs on your computer. exception error message (either automatically or when the user presses a particular key) SeeAlso: INT 2D/AL=20h"DTown"