DEC RXV21 with 5.25 floppy

From: ajp166 <ajp166_at_bellatlantic.net>
Date: Sun May 27 14:28:03 2001

From: jkunz_at_unixag-kl.fh-kl.de <jkunz_at_unixag-kl.fh-kl.de>


>I decided to write a NetBSD driver for the DEC QBus RXV21 8" floppy
controller. Unfortunately I have only two controllers, no 8" drive nor
medium. I thought that this would'nt be a problem, as it is possible to


If you have the controller (the qbus card) you have less than 15% of
an RX02 system. IT's only an interface.

>Would it be possible to use some other machine* with 5.25" floppy drive
to format the 5.25 media an way that the RXV21 can read it?


No. RXV21 is dual denisty and the double density is a DEC oddball format
using M2FM rather than MFM.

Also the board that goes in the Qbus slot (RXV21) is an interface
not a floppy controller. That "controller" is in the RX02 drive box
and is a 2901 based affair.

Allison
Received on Sun May 27 2001 - 14:28:03 BST