8" floppy project

From: Mike Cesari <mcesari_at_comcast.net>
Date: Wed Jul 28 00:28:42 2004

On Jul 27, 2004, at 10:47 PM, Ethan Dicks wrote:

> On Tue, Jul 27, 2004 at 11:31:38PM -0500, Doc Shipley wrote:
>> OK. I've heard yea and nay on this count.
>>
>> You're saying that on an RT-11 system (no OS/8 or its hardware to
>> play with), I can take an "IBM 3740 Compatible" SSSD disk out of the
>> box, run FORMAT/DOUBLE, and have an RX02 diskette? That would help
>> quite a lot.
>
> AFAIK, yes... that's true. The RX01 media that DEC used to sell was
> "IBM 3740 Compatible", and that's what I remember doing to "turn"
> RX01Ks
> into RX02Ks on an RT-11 system. If anyone has any contradictory
> information, please feel free to pipe up.
>
>> Hmm. I need to see if I have a Qbus RXV21 that can run in a 22-bit
>> system. Does VMS/VAX support RX02?
>
> I'm pretty sure VMS supports it, but my only experience is with Unibus
> hardware - an RX211 on a VAX-11/750. I would hope that an RXV21 works
> in a Qbus VAX, but I can't speak from experience.
>

To format, the VMS command is: INITIALIZE/DENSITY=double.
Both QBUS and UNIBUS interfaces are supported.

If you have XXDP for the PDP-11, you can format diskettes on an rx02
using
the ZRXE program. SSSD diskettes work fine.

Mike
Received on Wed Jul 28 2004 - 00:28:42 BST