On 1/3/19 2:50 PM, Mia Magnusson wrote: > Den Wed, 02 Jan 2019 15:34:24 +0100 skrev André Fachat <afachat@gmx.de>: >> Hi there, >> >> I was looking at floppy disk recording schemes and I am wondering if >> the 8050/8250/1001 floppy disk format with over 500kB per side was >> actually out of spec of even the Quad Density disks? >> >> The recording frequency was increased from 250kHz to 375kHz (× 1.5, >> for the innermost i.e. most critical track/speed zone). That resulted >> in a much increased number of bits per inch. See here: >> https://extrapages.de/archives/20190102-Floppy-notes.html >> >> What do you think? > > Afaik the 8050/8250/1001 drives are supposed to use "QD" disks, which > seems to be a format that's supposed to handle a higher density than DD. the (german) user manual that came with my 8050 back then mentioned 'single density' as the disks required. Not that I ever tried that, always used DD. GerritReceived on 2019-01-03 16:00:02
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