loading disk image on PDP-11

Patrick Finnegan pat at computer-refuge.org
Mon Jun 8 20:34:40 CDT 2009

On Monday 08 June 2009, Doug Jackson wrote:
> B M wrote - in relation to using vtserver to load an image onto a
> PDP-11/10:
> > "I was thinking of using vtserver to transfer the image over a
> > serial line, but the 'copy' program is not compatible with my
> > PDP-11/05 (it uses the 'mul' and 'div' instructions which is not
> > available on my PDP-11/10)."
> Is this the same reason why I cant get vtserver to work with my
> PDP-11/04 and PDP-11/34?  Has anybody else had success with this?

Well, IIRC, vtserver requires an MMU and >32kW of ram, though I don't 
remember how much exactly.

So, that pretty much excludes anything less than an 11/23, or some 
higher numbered models without an MMU or enough memory installed.

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