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- Path: sparky!uunet!usc!rutgers!cbmvax!ross
- From: ross@cbmvax.commodore.com (Ross Hippely - Manuals)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: HD floppy drive installation
- Summary: leave J351 alone with HD floppy drives
- Keywords: floppy jumper j351 df1:
- Message-ID: <38109@cbmvax.commodore.com>
- Date: 22 Dec 92 14:48:32 GMT
- References: <1h5dskINN15i@ford.mps.ohio-state.edu>
- Reply-To: ross@cbmvax.commodore.com (Ross Hippely - Manuals)
- Followup-To: comp.sys.amiga.hardware
- Organization: Commodore, West Chester, PA
- Lines: 29
-
- In article <1h5dskINN15i@ford.mps.ohio-state.edu> viv@ford.mps.ohio-state.edu (John Vivian) writes:
- >Has anyone sucessfully installed and utilized a CBM distributed chinon
- >HD floppy drive? If so, I'm seeking advice on how to do so.
- [...]
- >I've switched the J351 jumper and the jumper on the back of
- >the drive to make it correspond to df1: and it sucessfully supports
- >the amiga 880k format. However, any read/writes to either df0: or df1:
- >cause both drives to spin (though the drive not reading/writing does
- >not do anything other than spin).
-
- You get an A for effort-in-the-face-of-no-documentation, but one of your
- assumptions was mistaken. When you are using an HD drive as DF1:, you do
- NOT need to change J351 from its normal one-floppy position. The HD drives
- have a bit of circuitry built in them that does away with the need to muck
- with a motherboard jumper. Not that you could be expected to know this
- without documentation for using the drive. They just haven't asked us to
- write anything for it so far.
-
- I cannot guarantee that once you change this jumper back to its previous
- position everything will work fine, but it definitely will not work right
- if you don't.
-
- The jumper on the drive itself does still need to be different for DF0:
- and DF1:, though, so you should be all right there.
-
- --
- ----------------------------------------------------------------------------
- Ross Hippely: Technical Writer
- employed by, not speaking for: Commodore Business Machines Inc.
-