[TUHS] Fwd: Choice of Unix for 11/03 and 11/23+ Systems

[Heinz Lycklama]

Interaction with the outside world on the first LSX system
used standard DEC interfaces of the day - DLV-11 (serial)
and DRV-11 (parallel), plus a specially designed interface
card for a local device. The DLV-11 supported only one
serial port in 1975. Other DEC interface devices may have
been added to the Qbus after the mid 1970's.

Heinz


On 9/21/2020 6:54 AM, Paul Riley wrote:
> Heinz,
>
> Using LSX on the 11/03, what did you use for interaction with the 
> outside world? The SLU of the time had only one port I believe, and 
> that would be tied up with the console terminal. Will LSX handle cards 
> with multiple serial ports? Was there a favoured digital or analog I/O 
> board with some form of kernel support?
>
> Paul
>
> *Paul Riley*
>
>
>
>
> On Sat, 19 Sep 2020 at 22:22, Heinz Lycklama <heinz at osta.com 
> <mailto:heinz at osta.com>> wrote:
>
>     I do believe that it would be easier to use LSX source code,
>     but I also know that some folks at universities were able
>     to modify the source for Mini-UNIX to run on 11/03 in
>     the mid-70's because of the two, only Mini-UNIX source
>     code was available to universities.
>
>     Heinz
>
>     On 9/18/2020 8:22 PM, Paul Riley wrote:
>>
>>     Team,
>>
>>     I’ve read thru the FAQ and other sources regarding compatibility
>>     of Research and other flavours on the PDP-11. I have two physical
>>     machines, an 11/03 and an 11/23+. I’m choosing which version to
>>     use on each machine.
>>
>>     Is LSX the only option on the 11/03, or could I run V6 or
>>     Mini-Unix with more RAM?
>>
>>     From the FAQ, it says V7 would support 11/23 with kernel
>>     recompilation, I assume includes 11/23+. I see 2.11BSD would also
>>     run on a ‘23 (and + I guess) with 1MB or more of RAM, so that
>>     would be preferred. I suppose 2.11 would be preferable.
>>
>>     I also have found another 11/23+ system from a seller here in
>>     China. There’s the system, and a VT100, and a hard drive I can’t
>>     identify. Here’s a photo, does anyone know what it is? I may bid
>>     for it...
>>
>>     Paul
>>
>>     *Paul Riley*
>>
>>
>

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