I've uploaded the assembly source for my zap utility. https://www.dropbox.com/s/h7od6d4zrvepl53/zap.asm?dl=0 I use the original assembler that came with level 1. This utility should work in level 1 and level 2 OS9. I've tested it in NitrOS9 Level 2 and stock OS9 Level 2.