Firing up the pdt11

Pete Turnbull pete at
Tue Oct 13 17:04:24 CDT 2020

On 13/10/2020 22:28, Chris Zach via cctalk wrote:
> Then I guess the question rattling around my brain is "How did I get 
> this Elephant Memory systems disk formatted?"

RX01 format is a standard IBM format used by many systems, including 
many CP/M ones, so it was possible to buy pre-formatted disks.  Maybe 
they came that way.

> I do have a card around here called an RXV21 from Plessy or something 
> like that, maybe it could talk to an RX01 drive and format the disks?

Many 3-party controllers could.  Mine isn't a Plessey one, but it can do 
that - but mine connects to standard SA800-style drives, not an RX02.  I 
also have a Baydel F311 controller, which also can format disks and 
connects to standard SA800-style drives, but it only does single density.

Pete Turnbull

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