Adding floppy drives to my PDP-11?

Paul Anderson useddec at
Tue Apr 16 01:27:50 CDT 2019

Sorry, I've been rather busy lately.  I just looked and I have a few RXV11,
M7946 left.


On Sun, Apr 14, 2019 at 5:29 PM Noel Chiappa via cctalk <
cctalk at> wrote:

>     > From: Charles Morris
>     > it appears that the RXV21 will only work with an RX02 drive...
> So an RX02 can be jumpered to work with the non-DMA RXV11; but the DMA
> RXV21
> can't be configured to work with an RX01. Which of these two is a more
> interesting/useful thing to be able to do?
> People at MIT used to theorize the existence of a virulent biological
> virus,
> 'Honeywell Brain Damage'; I wonder if there's a DEC mutation?
>     > Just wondering what my options are for hooking up any kind of floppy
>     > drives. I could sell the RXV21 and buy/trade for an RXV11 (M7946)
>     > instead
> Those used to be fairly common on eBay for not many dineros; I only see
> one moderately expensive one at the moment, though. I'd definitely go
> this way, though - maybe Paul A has one available?
>         Noel

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