The Ampro Little Board was a very simple and cheap Z80-based computer from 1984, which ran CP/M. It was, in fact, a single PCB which you could mount on the bottom of a 5.25” drive.

All about the Ampro Little Board

It stored either 400kB on a double-sided 40-track drive or 800kB on a double-sided 80 track drive. The disk format it used was a slightly quirky variation of the standard MFM IBM scheme — sector numbering starts at 17 rather than 1 (or Acorn’s 0). FluxEngine supports this.

Just do:

fluxengine read ampro


You should end up with an ampro.img which is 409600 or 819200 bytes long. You can pass this straight into cpmtools:

\$ cpmls -f ampdsdd ampro.img
0:
-a60014.e
amprodsk.com
bitchk.doc
bitchk.mac
cpmmac.mac
dir.com
himem.doc
himem.mac
kaydiag.lbr
kayinfo.lbr
...etc...