PDP-11/05 returns to life

[Pete Turnbull]

On 09/01/2009 14:24, Henk Gooijen wrote:
>> From: toby at coreware.co.uk

>> Finally, I have a choice of RX21 + RX02 or RX11 + RX01
>> on the 11/05. Beyond the added pain of having to toggle in
>> a longer bootstrap on the RX02, is there any reason not to
>> go with the RX21/RX02 combo?

> An other reason to go for RX02 is that with RX02 you can also
> read RX01 formatted floppies. The RX02 drive has internally
> a switch to act as an RX01. It is ovbious that you can not
> read RX02 formatted floppies with the RX01 drive.

The switch -- if you're referring to the small 2-position DIP switch -- 
is only used if you want to connect an RX02 drive unit to an RX11 
controller, as if it were an RX01 drive unit (it's also used to set how 
the RX02 behaves for an RX8 controller).  You don't need to change it to 
read RX01-format floppies in the RX02 connected to an RX211.  If you do 
change it, the RX02 won't work properly with the RX211 any more!

-- 

Pete						Peter Turnbull
						Network Manager
						University of York