[Simh] Rolm 1602

[Bruce Ray]

Rolms mil-spec derivatives of the Data General Nova, Eclipse and MV are 
still used (flying, on ground, sailing and submerged) in a variety of 
interesting applications worldwide.  We still support these client 
systems and do have the corresponding appropriate hardware and software 
documentation.

These computers are not typically found in "usual" commercial 
applications due to their military-spec'ed hardware design - which 
translates to substantial costs over corresponding commercial spec'ed 
hardware.

Some ROLM 160x computer series added additional instructions to the 
original Nova instruction set - by using using an unused Nova I/O 
instruction.   Later ROLM systems maintained compatibility with the Data 
General Eclipse and MV instruction set with no significant added 
instructions.

1602 simulators existed that ran on the DG and ROLM computers, and our 
commercial products continue that tradition on modern platforms. 
Although the amount of original ROLM hardware existing in the field 
diminishes each year, their continued use to this day in [very] critical 
applications shows how well some systems were designed decades into the 
previous century...


Bruce Ray
Wild Hare Computer Systems, Inc.
Boulder, Colorado USA
bkr at WildHareComputers.com

...preserving the Data General legacy: www.NovasAreForever.org

On 6/25/2019 6:41 PM, Bob Supnik wrote:
> Rolm & Haas made a militarized Nova-compatible minicomputer called the 
> 1602 - a follow on to their 1601 Ruggednova system. It had an extended 
> instruction set. I know this because I found the listings for the PDP10 
> based 1602 simulator in my attic tonight. I've never seen any other 
> documentation.
> 
> I'm not sure this system adds anything to Nova lore, but if people are 
> interested, I can try to compile a "feature set" from the PDP10 
> simulator code.
> 
> /Bob
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