FTP problems

[Francis King]

Hello.

I'm having problems with FTP - reading other comments, part of a very long story.

I have set up an FTP client and an FTP server on my Windows 11 laptop, and also on the Raspberry Pi.

I can FTP from the Windows 11 laptop to the Raspberry Pi, and vice versa. What I can't do it to FTP between the Windows 11 laptop and the PiDP-10, running ITS, in either direction.

• Trying to FTP from the PiDP-10 to the Windows 11 laptop connects, but fails when trying to do a directory listing.
• Trying to FTP from Windows 11 to the PiDP-10 conects, but doesn't go anywhere. Eventually the connection is closed by the remote host.

When my PiDP-10 boots, it makes an error message: DETACHED JOB -> 4, USR:TARAKA CNAVRL 15:02:15. The book says (page 88 onwards), that the error message involves COMSAT. Mine doesn't, it says CNAVRL.

Is there a good way to get text files on and off PiDP-10 at this time?

[Eric Swenson]

Are you able to FTP from your Raspberry Pi and ITS?  If not, that is where you need to start.  FTPing from your Windows Machine through your Raspberry Pi to your ITS may require some firewall/routing setup.

Regarding your detached job issue, the actual program being run is COMSAT (.MAIL.;COMSAT LAUNCH).  However, it is being launched as a daemon by a link in the CHANNA directory (CHANNA;RAKASH CNAVRL).  This is a link to .MAIL.;COMSAT LAUNCH.  There is also an hourly job (DRAGON;HOURLY CNAVRL) that runs. That is also a link to .MAIL.;COMSAT LAUNCH.

So, in short, COMSAT is dying.  You probably didn’t make all the fixes that I reported on in an old thread regarding the IP address of your ITS.

The “good way” to get text files on and off ITS, is through FTP.  So you need to first get FTP working between your Pi and ITS.  That involves correctly setting up the network.  Once you have that working, we can tackle the Windows -> Pi -> ITS FTP.

— Eric

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[Francis King]

So, in short, COMSAT is dying.

Thanks for that very  clear explanation. That the error message said CNARVL rather than COMSAT is what threw me.

You probably didn’t make all the fixes that I reported on in an old thread regarding the IP address of your ITS.

Indeed, I didn't make any of those changes. But now I know what's going on, I will make them tomorrow.

Francis.

[Preston Briggs]

I can’t make ordinary ftp work, even with Eric's changes, but reading the manual (!) reveals mlftp.

/opt/pidp10/bin/mlftp -w its test ~/test

Copies a file (test) from the current directory of the RPi to the .TEMP. directory on ITS.

Similarly

/opt/pidp10/bin/mlftp -r its "test list ppb;" test.list

Copies a file (test list) from the directory ppb: on ITS to a file test.list in the current directory on the RPi.

[Preston Briggs]

When I say "the manual", I mean here: 

    https://github.com/larsbrinkhoff/its-manual/wiki/mlftp

[Francis King]

I have made some progress. ITS no longer complains about CNVRAL, it complains about COMSAT.

:)

I have followed the instructions on page 90 onwards.

As far as I can tell, I am here:

1. Updated host table H3TEXT, compiled, no errors
2. Fixed the COMSAT file, variables changed, file purified, no errors
3. Generate COMSAT table, error message
4. Fix COMSAT mailing file, no errors

Part 3:

comsat $j

$l .mail.;comsat launch

debug/ -1                            ; was zero, now -1

mfinit$g                              ; produces error

Expected message:

:$ File Directory Initialization successfully completed

Received message:

:$ Error (s) during EQV file compilation! Read STATS or error file.

But I don't know what STATS is, or where the error file is.

Thoughts please.

On Saturday, November 8, 2025 at 5:56:33 PM UTC er...@swenson.org wrote:

[Eric Swenson]

I’ve seen this before — especially when I tried to set up comsat from scratch the first time. Can you show me a listing of your .MAIL. directory? 

On Nov 16, 2025, at 07:41, Francis King <francis...@gmail.com> wrote:

I have made some progress. ITS no longer complains about CNVRAL, it complains about COMSAT.

To view this discussion visit https://groups.google.com/d/msgid/pidp-10/32abfd98-e52f-45d6-a84f-c515ad1565cen%40googlegroups.com.

[Eric Swenson]

Oh, I forgot to say .MAIL.;STATS > is where all error messages and status (and log) information is written. Does that file exist? If so, look at it and post the last 50 lines of it.

On Nov 16, 2025, at 07:41, Francis King <francis...@gmail.com> wrote:

I have made some progress. ITS no longer complains about CNVRAL, it complains about COMSAT.

To view this discussion visit https://groups.google.com/d/msgid/pidp-10/32abfd98-e52f-45d6-a84f-c515ad1565cen%40googlegroups.com.

[Francis King]

.mail. folder contents

DSK: .MAIL.;  LOCK UNIQUE
DSK: .MAIL.; *MSG EXP
DSK: .MAIL.; -READ- -THIS-
DSK: .MAIL.; BBOARD INFO
DSK: .MAIL.; COMSAT BIN
DSK: .MAIL.; COMSAT LAUNCH
DSK: .MAIL.; MAIL 1
DSK: .MAIL.; MAIL 10
DSK: .MAIL.; MAIL 11
DSK: .MAIL.; MAIL 12
DSK: .MAIL.; MAIL 13
DSK: .MAIL.; MAIL 14
DSK: .MAIL.; MAIL 15
DSK: .MAIL.; MAIL 16
DSK: .MAIL.; MAIL 17
DSK: .MAIL.; MAIL 18
DSK: .MAIL.; MAIL 19
DSK: .MAIL.; MAIL 2
DSK: .MAIL.; MAIL 20
DSK: .MAIL.; MAIL 21
DSK: .MAIL.; MAIL 22
DSK: .MAIL.; MAIL 23
DSK: .MAIL.; MAIL 24
DSK: .MAIL.; MAIL 25
DSK: .MAIL.; MAIL 26
DSK: .MAIL.; MAIL 27
DSK: .MAIL.; MAIL 28
DSK: .MAIL.; MAIL 29
DSK: .MAIL.; MAIL 3
DSK: .MAIL.; MAIL 30
DSK: .MAIL.; MAIL 31
DSK: .MAIL.; MAIL 32
DSK: .MAIL.; MAIL 33
DSK: .MAIL.; MAIL 34
DSK: .MAIL.; MAIL 35
DSK: .MAIL.; MAIL 36
DSK: .MAIL.; MAIL 37
DSK: .MAIL.; MAIL 38
DSK: .MAIL.; MAIL 39
DSK: .MAIL.; MAIL 4
DSK: .MAIL.; MAIL 40
DSK: .MAIL.; MAIL 41
DSK: .MAIL.; MAIL 42
DSK: .MAIL.; MAIL 43
DSK: .MAIL.; MAIL 44
DSK: .MAIL.; MAIL 45
DSK: .MAIL.; MAIL 5
DSK: .MAIL.; MAIL 6
DSK: .MAIL.; MAIL 7
DSK: .MAIL.; MAIL 8
DSK: .MAIL.; MAIL 9
DSK: .MAIL.; NAMES 2010
DSK: .MAIL.; NAMES 2011
DSK: .MAIL.; NAMES INFO
DSK: .MAIL.; STATS 1
DSK: .MAIL.; XID 4
DSK: .MAIL.; XLIST   MSGS
DSK: .MAIL.; XLIST  QUEUE
DSK: .MAIL.; XLIST MASTER
DSK: .MAIL.; XLIST REMIND
DSK: .MAIL.; XLOCK UNIQUE
DSK: .MAIL.; XSTATS 1

[Eric Swenson]

Ok. Your mail isn’t going out (all those MAIL NNNNN files). What does STATS > say?

On Nov 23, 2025, at 12:16, Francis King <francis...@gmail.com> wrote:



To view this discussion visit https://groups.google.com/d/msgid/pidp-10/4a28bf74-e727-4105-b900-affcfe1e84afn%40googlegroups.com.

[Francis King]

STATS file contents, as requested:

125609  Date is now: 11/16/25 12:56:09

125609  POWERING UP!  THE DATE IS 16 NOV 2025 1256 EST

    BOOSTED BY COMSAT #584 LAUNCHED BY TARAKA AS CNAVRL

125610   ===> BUG: FATAL ERROR <===  Date: 11/16/25 12:56:09

    Autopsy from 30652 Preserved from 21337

    Last UUO = 006000,,020527 at 20036

125610      INT. FROM 0 .JPC/0

    Registers:  

0/ 010000,,000000

1/ 440700,,001631

2/ 001200,,600006

3/ 000000,,000000

4/ 000000,,000042

5/ 000000,,000000

6/ 000000,,000000

7/ 000000,,000000

10/ 000000,,000000

11/ 000000,,000000

12/ 000000,,000000

13/ 000000,,000004

14/ 000000,,000000

15/ 170700,,002175

16/ 000000,,000000

17/ 777023,,000645

125610  No MAILIN > file present during burnup.

125610  Job dumped to CRASH;BURNUP 22 

[Francis King]

On the upside, I have FTP

[Eric Swenson]

Can you provide me the values of TCPGAT, DOMGAT, and BUGHST for COMSAT?  See below:

ES>foo◊j!

ES>◊l (Load Bin File) ◊

DSK: EJS; FOO BIN    .mail.;comsat launch

ES>tcpgat/'NEW◊:   25577,,750651   =25577750651

domgat/   25577,,750651   =25577750651

bughst/   SHOWQ+47,,PAT+6   =30052000144

Note that after DDT prints out the location of, say, tcpgat, hit the = sign so that the value is displayed in octal.

What is your host’s IP address?

What is your ITS’ IP address?

sys◊j!

ES>impus3=30052000144

(Just type “IMPUS3=“ and it will display the value in octal).

TCPGAT and DOMGAT should be the same, and should be the IP address of your mail host (e.g. the SMTP server on your host).

BUGHST should be the IP address of your ITS and should match the value of IMPUS3 (the symbol’s value) in ITS.

— Eric

To view this discussion visit https://groups.google.com/d/msgid/pidp-10/5047671b-8a6f-4703-9e0f-d3628551160cn%40googlegroups.com.

[Francis King]

fooESCj

ESCl .mail.;comsat launch

BUGHST/= 1200600006

DOMGAT/= 0

TCPGAT/=0

sysESCj

IMPUS3/= 0

[Eric Swenson]

sorry for the weird rendering of the esc characters there. ESCj is $J and ESCl is $L, where $ is alt mode, or typed as ESC.

On Nov 23, 2025, at 13:21, Francis King <francis...@gmail.com> wrote:

fooESCj

To view this discussion visit https://groups.google.com/d/msgid/pidp-10/01bf1307-83c0-40e4-8ed1-5d90c4a00705n%40googlegroups.com.