Heath Z-67 Device Driver and Utilities
These files are based on a disassembly of the original Heath software. There are four components:
HD67.DVD HDOS device driver PREP.ASM Disk preparation utility PART.ASM Disk partitioning utility BOOT.ASM Boot track
PREP67, PART67 and BOOT67 are the versions containing any revisions. The original code contained Z80 specific instructions.