[TUHS] Fwd: Choice of Unix for 11/03 and 11/23+ Systems
Heinz Lycklama
heinz at osta.com
Tue Sep 22 01:30:42 AEST 2020
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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