The RSTS riddle.
Jerome H. Fine
jhfinedp3k at compsys.to
Fri Jun 3 10:42:36 CDT 2016
>On Saturday, May 21st, 2016 at 19:29:11 +0100, Rod Smallwood wrote:
> Further to my posts this morning I have one last hurdle to jump.
> 1. I have a VAX with a TK70 attached and a TQK70 controller.
> 2. The tape drive works just fine.
> 3. Also on the VAX I have the correct tape (.TAP) image file for a
> RSTS/E V10 install tape.
> 4. I would like to copy the .tap file to the tape so as to end up with
> a bootable install tape.
> 5. I then power down the VAX and move the controller to an 11/83. (The
> drive is external with its own PSU)
> 6. Boot the install tape and go from there.
> So suggestions please as to how to do 4.
Just a suggestion concerning the use of the PDP-11/83,
or for that matter, any PDP-11 system within either a
BA23 or a BA123 box with either a TK50 and / or a
Whenever I used the PDP-11/83 with ESDI hard drives
(I use 3 * Hitachi DK515 600 MB drives which require
a reasonable initial power surge at start-up), I always used
an external power supply in order to minimize the load on
the standard DEC internal power for the boards in the
backplane. At one point, I also attached the TK70 to that
same power supply. My experience was MUCH LESS
than successful. For reasons which I never bothered to
figure out, the TK70 would function successfully ONLY
when it was connected to the same standard DEC internal
power supply as the boards in the PDP-11/83.
So if you find there are problems, try connecting the TK70
to the standard DEC internal power supply.
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