drem2emu - Convert DREM hard drive images to EMU format

drem2emu converts the DREM hard disk image format to the EMU format used by the Gesswein MFM emulator. The converted format is specifically for the WD1010 (or WD2010) controller chips used by TRS-80 hard drives.

Per-track capacity is limited to 17 512 byte sectors or 33 256 byte sectors. The number of heads is at most 8, the maximum supported by the WD1010 controller chip.

A precompiled binary for Windows is included along with the source code which inclues trivial build scripts for MacOS and Linux.

Usage Summary

usage: drem2emu [-v] [-i n] source_hard dest_hard
	-v	Print progress information
	-i n	Forced interleave of output tracks
	-s n	Sector size (128, 256, 512, 1024)
	-gap3	GAP3 format parameter override
	-f	Only format EMU do not copy data

The download comes with xtar and xfile.

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George Phillips, October 10, 2026. george -at- 48k.ca