> On Nov 15, 2016, at 5:40 PM, Josh Dersch wrote:
>
> ...
> I noticed the following commented-out line at the beginning of the program:
>
> START:
> ; RESET ;CLEAR THE WORLD
> ; MOV #P7,PS ;LOCKOUT P1 BY RAISING CPU PRIORITY <<
>
> Uncommenting th
On Wed, Nov 9, 2016 at 7:20 PM, Josh Dersch wrote:
> On 11/9/16 6:18 PM, Paul Koning wrote:
>
> On Nov 9, 2016, at 5:57 PM, Josh Dersch wrote:
>>>
>>> ...
>>> A quick update -- I ran the ZTCD diagnostics and they do fail, despite my
>>> recollection (this is what I get for not taking notes at th
On Thu, 10 Nov 2016, Noel Chiappa wrote:
BTW, I noticed a couple of places in DTF.MAC where error checking code was
commented out, e.g.:
;EHLT4:XX ;HALT WITH BLK#IN LIGHTS, CONTINUE
; MOV #257.,R0;TO FIND DATA WORD POSITION
; ADD TOG1,R0
> From: Christian Corti
> Seems the original must have been the XXDP TC11 DECtape formatter
> program by Robert J. Collins. I have no clue where I found the RT11
> version of this
So that made me wonder if the V6 Unix version of tcf.s really was related to
DTF.MAC. I checked out t
On Wed, 9 Nov 2016, Noel Chiappa wrote:
Having just looked at the original :-), it did have two messages:
"ready drive 0 and type y"
and
"tcf: error"
Seems the original must have been the XXDP TC11 DECtape formatter program
by Robert J. Collins. I have no clue where I found the RT11 versi
On 11/9/16 6:18 PM, Paul Koning wrote:
On Nov 9, 2016, at 5:57 PM, Josh Dersch wrote:
...
A quick update -- I ran the ZTCD diagnostics and they do fail, despite my
recollection (this is what I get for not taking notes at the end of
yesterday, and yesterday seems so far away now...). The first
> On Nov 9, 2016, at 5:57 PM, Josh Dersch wrote:
>
> ...
> A quick update -- I ran the ZTCD diagnostics and they do fail, despite my
> recollection (this is what I get for not taking notes at the end of
> yesterday, and yesterday seems so far away now...). The first test (a
> forward WALL, foll
On Wed, Nov 9, 2016 at 1:43 PM, Josh Dersch wrote:
>
>
> On Wed, Nov 9, 2016 at 1:05 PM, Paul Koning
> wrote:
>
>>
>> > On Nov 9, 2016, at 3:32 PM, Josh Dersch wrote:
>> >
>> > ...
>> >
>> > Now that I've gotten the full suite of diagnostics to run, the problem
>> > seems to be that the TC11 is
On 11/9/16 1:50 PM, jim stephens wrote:
>
> Are
> there two such stations on the drive for reading?
Nope. DECtape only has one set of heads, so it writes blind.
On 11/9/2016 1:43 PM, Josh Dersch wrote:
t's clear from running the diagnostics (ZTCC, not
ZTCD, sorry for the important typo) that a Read in a reverse direction
fails (but writes seem to be OK in either direction -- the tests that do
forward reads, regardless of the write direction of the data
On Wed, Nov 9, 2016 at 1:05 PM, Paul Koning wrote:
>
> > On Nov 9, 2016, at 3:32 PM, Josh Dersch wrote:
> >
> > ...
> >
> > Now that I've gotten the full suite of diagnostics to run, the problem
> > seems to be that the TC11 isn't reading properly in reverse -- Tests
> > 15,16,21,22,26,27 and 34
> On Nov 9, 2016, at 3:32 PM, Josh Dersch wrote:
>
> ...
>
> Now that I've gotten the full suite of diagnostics to run, the problem
> seems to be that the TC11 isn't reading properly in reverse -- Tests
> 15,16,21,22,26,27 and 34 of ZTCD fail, all others pass (modulo a marginal
> block on the t
> From: Josh Dersch
>> The UNIX V6 distro includes a standalone program, tcf.s, to format
>> DECtapes.
> I could probably get a V6 distribution running if I need to, but if you
> have the means to do so easily, that would be handy so I can at least
> have another tool to t
On Wed, Nov 9, 2016 at 12:59 AM, Christian Corti <
c...@informatik.uni-stuttgart.de> wrote:
> On Tue, 8 Nov 2016, Josh Dersch wrote:
>
>> with the TC11 system," and I haven't managed to find it. I *have* found
>> this:
>> http://mirrors.pdp-11.ru/inf.informatik.uni-stuttgart.de/pdp11/dtf.mac
>>
>
> On Nov 9, 2016, at 3:59 AM, Christian Corti
> wrote:
>
> On Tue, 8 Nov 2016, Josh Dersch wrote:
>> with the TC11 system," and I haven't managed to find it. I *have* found
>> this:
>> http://mirrors.pdp-11.ru/inf.informatik.uni-stuttgart.de/pdp11/dtf.mac
>
> ... which is simply a mirror of ou
On Tue, 8 Nov 2016, Josh Dersch wrote:
with the TC11 system," and I haven't managed to find it. I *have* found
this:
http://mirrors.pdp-11.ru/inf.informatik.uni-stuttgart.de/pdp11/dtf.mac
... which is simply a mirror of our FTP server at
ftp://ftp.informatik.uni-stuttgart.de/pub/cm/...
I enhan
On 11/8/16 1:43 PM, Noel Chiappa wrote:
> From: Josh Dersch
> If I run them on SIMH configured as an 11/44, I see the same behavior.
> If I run them on SIMH configured as an 11/20, then I get the printout
> described in the documentation and listings. ... I haven't yet dug i
> From: Josh Dersch
> If I run them on SIMH configured as an 11/44, I see the same behavior.
> If I run them on SIMH configured as an 11/20, then I get the printout
> described in the documentation and listings. ... I haven't yet dug in
> to see what accounts for the difference
On Tue, Nov 8, 2016 at 12:54 PM, Paul Koning wrote:
>
> > On Nov 8, 2016, at 3:37 PM, Josh Dersch wrote:
> >
> > Hi all --
> >
> > ...
> > 2) I'm looking for means to format DECtapes on the TC11. I have a few
> > marginal tapes and I'd like to see if reformatting them brings them back
> to
> >
> On Nov 8, 2016, at 3:37 PM, Josh Dersch wrote:
>
> Hi all --
>
> ...
> 2) I'm looking for means to format DECtapes on the TC11. I have a few
> marginal tapes and I'd like to see if reformatting them brings them back to
> life. The maintenance manual only indicates "a special program supplie
On 11/8/16 12:37 PM, Josh Dersch wrote:
> I've assembled and run on RT-11 and it goes through the motions of
> writing out the timing and mark tracks, but when it goes through the second
> pass to write out the block numbers it fails immediately
Did you set the switch on the controller front pan
Hi all --
I'm working on getting a TC11 + TU56 running at the LCM+L. We plan to use
it as a tool for various archival and restoration efforts.
After restoring the power supplies, I have it lashed up to a PDP-11/44 -- I
know this is anachronistic, but it's been a workhorse machine with ethernet
a
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