the arrogance of youth [was RE: UNIX V7]

Rich Alderson RichA at
Thu Jun 11 20:41:15 CDT 2009

> From: David Betz
> Sent: Thursday, June 11, 2009 6:32 PM

> On Jun 11, 2009, at 9:19 PM, Rich Alderson wrote:

>>> Are you saying those fiber network boxes are running TOPS-20?

>> Yes.

> Wow! That's very cool. Can we also assume that the processor(s) in  
> those boxes use the PDP-10 instruction set or have they ported TOPS-20  
> to another processor?

The former.  TOPS-20 has a number of PDP-10 assumptions built into it, mostly
because it is written in PDP-10 assembler, and would be difficult to port.

Rich Alderson
Vintage Computing Server Engineer
Vulcan, Inc.
505 5th Avenue S, Suite 900
Seattle, WA 98104

mailto:RichA at
(206) 342-2239
(206) 465-2916 cell

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