They look very similar to these:The only binaries I could find are the attached .zip file of CP/M utilities - the program ECO.COM, when executed under CP/M, should initialise the card and then in theory hooks CP/M so you can have a 'network drive'. However, the STAR.COM utility is missing - that let you do fileserver commands like *I AM to log on, but was later superceded by replacing the CCP (CP/M's shell) by 'JCCP' which had extensions for Econet features and you could just type *I AM directly.
https://mdfs.net/Software/CPM/ZNOS/SJCOM.zip
AcornCPM disks have a +2 logical disk sector skew, so if you just look at an image the data will look scrambled. Are you able to mount it with CPMFiler? You could post the image and I could work out the geometry - it took about an hour to jigger around the Wren disk images at ABUG, they have a similar sector skew.More of a problem is working out what sort of disc this actually is. It seems like a BBC Z80 2nd processor CP/M disc, but it's not bootable, and if mounted as drive B (on Bem) the file content (of various source files that should be recognizable) are all mixed up - as if there's some kind of disc geometry problem, sector rotational offset or something like that. Possibly the disc imaged incorrectly.
Statistics: Posted by jgharston — Sun Nov 02, 2025 3:57 am