-----Original Message-----
From: CLASSICCMP_at_trailing-edge.com <CLASSICCMP_at_trailing-edge.com>
To: classiccmp_at_classiccmp.org <classiccmp_at_classiccmp.org>
Date: Saturday, February 12, 2000 11:07 AM
Subject: Re: RX01 Bootstrap Loader
>>Due to the instruction set incompatibilities between the 11/20 and other
>>11s, will they even run RT11 V30B with 8K core?
>
>RT11 V03B ought to be OK, as long as you have enough memory. I know that
>12K words core is enough (I have V03B on an 11/04 with 12K core), I suspect
>it will fit in 10 or 8K.
The monitor only uses 2K core and expects 8. (SJ).
>
>If you try to run RT-11 5.5 or 5.6 on an 11/20, you'll get some complaint
>because EIS instructions found their way into a few utilities and drivers.
>This has been rectified for 5.7; see the 5.7 release notes for details.
>
I am more concerned about the incompatibilities in the basic instruction
set. I am going to try boot RT11 V3B. If not, I'll try plain ver 3, then
maybe 2.
I know DEC discontinued the 11/20 in '73 which was during the initial
development of the OS's.
john
PDP-8 and other rare mini computers
http://www.pdp8.com
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Received on Sat Feb 12 2000 - 10:44:58 GMT