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- Path: severus.mbfys.kun.nl!rhialto
- From: rhialto@mbfys.kun.nl (Olaf Seibert)
- Newsgroups: comp.sys.cbm
- Subject: Re: sfd-1001 questions
- Date: 4 Jan 1996 14:09:55 GMT
- Organization: University of Nijmegen, The Netherlands
- Distribution: world
- Message-ID: <4cgn3j$ak@wn1.sci.kun.nl>
- References: <4cdgck$9tn@sirius.cs.pdx.edu>
- NNTP-Posting-Host: severus.mbfys.kun.nl
- Keywords: sfd-1001
-
- In <4cdgck$9tn@sirius.cs.pdx.edu> crimson@cs.pdx.edu (bill m howland) writes:
- > I recently got ahold of one of these, and without a manual, I don't know
- >much about the thing. Can anyone present tell me a bit about the drive, as
- >far as what makes it unusual? The disk format, and non-1541 commands, etc..
-
- For disk commands it is pretty much the same as a 1541. I would like to
- get a hold of a ROM dump though (perhaps you can send me one).
-
- > What crazy method did they use to get so much capacity?
-
- It uses 77 tracks (but I'm not sure if it is 2-sided, in which case it
- would use 2 x 77 tracks) with about 1.5 the bit density. You should
- use Double Density disks, suitable for use with 77 (or 80) tracks,
- which is indicated by the "96 tpi" marking. Do not use High Density
- disks.
-
- This format is compatible with the 8050 (single sided, 0.5 megabyte)
- and 8250 (double sided, 1.0 megabyte, well actually a bit more since it
- is more than 4096 sectors per disk) drives.
-
- >: Crimson Knight : "Lost in the wheels of confusion, :
- >: crimson@sirius.cs.pdx.edu : running through valleys of tears...." :
- >:---------------------------: :
- >:/\/\/\/\/\/\/\/\/\/\/\/\/\/: -Black Sabbath 1972 :
-
- -Olaf.
- --
- ___ Copyright 1996 Olaf 'Rhialto' Seibert. All Rights Reserved.
- \X/ You are not allowed to read this using any kind of Micro$oft product.
-