TRS-80 Model I Hard Disk Adapter Board
TRS-80 Model I’s require an adapter board to adapt the 40-pin connector on the Model I Expansion Interface to a 50-pin connector for hard drives.
Since these boards are virtually impossible to find today, Ian Mavric has created an adapter board, so those with Model I’s can connect to a real TRS-80 hard drive or a FreHD Hard Drive emulator.
The cost for the fully-assembled board (including the TRSHD15/DCT and TRSFRM15/CMD drivers) is $50.00 + Shipping.
The ideal system is a 48K Model I Disk system (in good condition) running LDOS v5.3.1 with a TRS-80 5MB or 15MB Hard Drive.
Contact Ian on firstname.lastname@example.org
FreHD – Hard Drive Replacement for a REAL Model I/III/4
Frédéric Vecoven and Ian Mavric have developed, designed, and now sell a Model I and Model III/4 hard drive replacement called FreHD. The FreHD is a circuit board which accepts a SD card and looks like an actual hard drive to a TRS-80 Model I/III/4.
• Model I: LDOS 5.3.1
• Model III: LDOS 5.3.1
• Model 4/4P: LS-DOS 6.3.1, Montezuma CP/M 2.2
Compares the FreHD with an actual TRS-80 MFM Hard drive
Shows what comes with Kit C, how to connect it and get booted up
Shows CP/M 2.2 running on FreHD
Shows 4P auto-boot LS-DOS 6.3.1 and CP/M 2.2
Shows FreHD working on the TRS-80 Model I
Self booting without floppy disks and a menu to choose a DOS image
FreHD M1 mounted in a Dragon external disk drive case
FreHD in a diskless (cassette based) Model III