1.3 KiB
Disk: TRS-80
The TRS-80 models I, III and IV (but not the II, 100, 2000, Colour Computer or Pocket Computer) was a popular line of Z80-based home computers made by Tandy Corporation and sold by Radio Shack. There were some of the first generation of domestic micromputers, with the Model I released in 1978.
There were a myriad of different floppy disk interfaces, some produced by Tandy and some by third parties, using all the various combinations of 40- and 80-track, FM, MFM, etc.
Luckily the encoding scheme was mostly compatible with the IBM scheme, with a few minor variations: when using FM encoding, the TRS-80 wrote the sectors on track 17 (where the directory was) with a non-standard DAM byte.
FluxEngine's IBM reader can handle TRS-80 disks natively.
Reading discs
Just do:
fluxengine read ibm -o trs80.jv3
You should end up with an trs80.jv3 of the appropriate size. It's a simple
array of sectors in JV3 format.
If you've got a 40-track disk, use --cylinders=0-79x2.
If you've got a single density disk, use
--decoder.ibm.trackdata.read_fm=true. (Double density is the default.)
Useful references
- The JV3 file format: documents the most popular emulator disk image.