Honeywell DPS-6 and other stuff

From: Andy Holt <andyh_at_andyh-rayleigh.freeserve.co.uk>
Date: Mon Apr 5 01:15:59 2004

> I'd be even more interested in a DPS-8 emulator with a copy of
> GCOS-8,

This would be a serious challenge - the hardware must be the extreme of a
CISC having:
extremely complex address modes that exceed even those of a VAX; and
"EIS" instructions that are close to hardware COBOL.
Interrupts only (potentially) enabled on odd(?) addressed instructions

Getting and configuring a copy of GCOS-8 might also be tricky
My experience was with GCOS-3 the predecessor of 8 ... extremely stable once
the (necessary) user-written modules were well debugged - extremely unstable
until then

This may well mean that the OS stability will also depend critically on very
detailed accuracy of the emulation.

Andy
Received on Mon Apr 05 2004 - 01:15:59 BST