15 Apr
2015
15 Apr
'15
2:31 p.m.
On Wed, 15 Apr 2015, Rich Alderson wrote:
Cory,
It may be that CI$ defined some bits differently in their monitor. I strongly
suggest that you examine the (emulated?) drive using FILDDT. Start by locating
the HOM block (which might not be where DEC would put it; I vaguely remember a
difference between Stanford and Mike&Stewart vis-a-vis TOPS-20 file systems).
You can that with
Could be, will look in a bit.
Could also be an error in http://abuse.mooli.org.uk/compuserve/ (what a
friend used to convert the 584-byte-sector drive to something usable in
KLH10)
I can copy all files in the first 132 blocks (not counting any metadata
blocks) fine. That's HOM.SYS, BATBLK.SYS, and MARSFE.SYS. I'm not the
greatest with the mathematics and whatnot - better at installing the OSes
and getting everything wired together. ;)
$"/HOM /$w
or 505755,,0$w
(equivalent invocations of the word-search function. "$" is altmode = escape,
not dollar)
Thanks.
Use the Tops-10 Monitor Calls Reference Manual vol. 2 from Bitsavers, to see
the layout of a DEC HOM block (in the tables portion of the manual). Vol. 1
has a good discussion of going from [1,1] to a file in a directory, and the
HOM block contains a pointer to [1,1].
Hmmm. [1,1] is the ...what's the term... UFD? that I can access files
from.
What do you mean by "I get a BUGCHK whenever I boot TOPS-10 in KLH10"?
I've
done that any number of times, and never had a BUGCHK. What specifically is
it doing?
I figured out what that was, it's an issue with the file being larger than
an actual rp06 disk image (truncating it, setting it to an rm05,
If you like, we can move the discussion to the SimH list (to include Tim Litt)
or alt.sys.pdp10 (to include lots of other folks).
That would get a bit offtopic for SIMH as I'm using KLH10 for this (I've
only gotten the image to be happy with fmt=dbd9, unsure if SIMH can do the
same conversion but I will try shortly)
No responses on alt.sys.pdp10, perhaps you can wake some people up? ;)
Rich
P. S. OBTW, congratulations!!!
Thanks!
Oh, a heads up: the SC-40s you have can all run the newer supervisor (1.08
instead of 1.01. I found mine passed all diags after I imaged the newer
drive...aside from the SC-40 Exerciser of course, that's still unhappy
with my SCSI bus.)
Rich Alderson
Vintage Computing Sr. Systems Engineer
Living Computer Museum
2245 1st Avenue S
Seattle, WA 98134
mailto:RichA at LivingComputerMuseum.org
http://www.LivingComputerMuseum.org/
--
Cory Smelosky
http://gewt.net Personal stuff
http://gimme-sympathy.org Projects