booting archived Sys III and Ultrix 3.x images

Steven M. Schultz sms at moe.2bsd.com
Thu Oct 21 12:59:53 AEST 1999


Howdy -

> From: pups at mrynet.com (PUPS mailing list)
> 
> Has anyone successfully booted either the System III 
> (...Distributions/usdl/SysIII/) or Ultrix (...Distritutions/dec/Ultrix*)
> tape images?  I don't have a real PDP-11 any more, however both the

	I don't know what the problem with Ultrix is but I suspect
	your trouble with System-III is similar to what I wasted a couple
	days on eons ago

	Spent a fruitless couple days trying to get Sys-III going on a 11/44
	only to have it dawn on me that Sys-III didn't have *any* UMR support
	except for the DH-11 - thus an 11/70 with MASSBUS devices was the
	only thing Sys-III would run on.   

	As far as I know no effort was put into Sys-III to deal with 22
	bit machines that didn't have a MASSBUS (a la 11/70).  PERHAPS
	that is what is biting you?   Feels likely.   I know that no effort 
	was put in to supporting UMRs on 22bit systems such as the 11/44.

	The Supnik and Begemot emulators offer up a ~kdj-11 (11/53, 73, ...)
	and not an 11/70 so it could be that Sys-III is trying to do 
	something 11/70'ish that KDJ-11 based systems don't offer.

	Steven Schultz
	sms at moe.2bsd.com

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