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  • daver2's Avatar
    Today, 02:37 AM
    daver2 replied to a thread Netronics Explorer 85 in Other
    How are you keeping. I still owe you an email don't I! The information I have found at...
    1 replies | 22 view(s)
  • daver2's Avatar
    Yesterday, 12:53 AM
    If you canít get a good clip connection, solder a small length of solid wire onto the point(s) you wish to measure. I slip a small piece of...
    13 replies | 310 view(s)
  • daver2's Avatar
    October 24th, 2020, 04:55 AM
    After some thought (and lunch)... my advice would be to use your logic analyser to monitor the control signals around the 6520 PIA UB12 and see what...
    47 replies | 1379 view(s)
  • daver2's Avatar
    October 24th, 2020, 12:41 AM
    I was reviewing all of the posts just now: 1. There is a history of ‘eaten pins’. 2. There is a history of problems with /IRQ. 3. At one point...
    47 replies | 1379 view(s)
  • daver2's Avatar
    October 21st, 2020, 11:46 PM
    Nicely done! What a swine of a problem to cut your teeth on! But you (hopefully) succeeded... It sounds like a very long session of space...
    76 replies | 2248 view(s)
  • daver2's Avatar
    October 21st, 2020, 01:58 PM
    Yep, everything looks OK there. The UD7 /CSI is OK. The ROM at Exxx is disabled (signal high) when E8xx is selected (the I/O area). Yep, NOP...
    47 replies | 1379 view(s)
  • daver2's Avatar
    October 20th, 2020, 09:52 AM
    daver2 replied to a thread VAX Haul... in DEC
    I remember at some point in the dim and distant past I had to increase the number of global pages to run a bespoke application I was trying to...
    79 replies | 2897 view(s)
  • daver2's Avatar
    October 20th, 2020, 12:04 AM
    daver2 replied to a thread VAX Haul... in DEC
    Excellent advice, works exactly as described. Thanks very much. Next thing, install various languages... Dave
    79 replies | 2897 view(s)
  • daver2's Avatar
    October 18th, 2020, 07:01 AM
    daver2 replied to a thread VAX Haul... in DEC
    Thank you everyone for your extremely helpful (and very detailed) assistance. I will give my newly-gained knowledge a test this week! I do...
    79 replies | 2897 view(s)
  • daver2's Avatar
    October 16th, 2020, 06:54 AM
    daver2 replied to a thread VAX Haul... in DEC
    Perhaps it is an 'age' thing... Perhaps it was 11M at the time? That brain cell has died now! I am having a night off for a change, so - before...
    79 replies | 2897 view(s)
  • daver2's Avatar
    October 15th, 2020, 12:35 PM
    daver2 replied to a thread VAX Haul... in DEC
    Getting further. Got the base OpenVMS 6.1 Operating System installed at the second attempt. I misread one of the questions on the first attempt... ...
    79 replies | 2897 view(s)
  • daver2's Avatar
    October 15th, 2020, 01:56 AM
    daver2 replied to a thread VAX Haul... in DEC
    Just looked up the protocol specification for the Logitech Logimouse C7 - and that (at first check) seems to support the same protocol as the DEC...
    79 replies | 2897 view(s)
  • daver2's Avatar
    October 14th, 2020, 02:16 PM
    daver2 replied to a thread VAX Haul... in DEC
    There is a long story about the internet access (or rather lack of)... The bizarre thing is that my install manual is only 3m away from the...
    79 replies | 2897 view(s)
  • daver2's Avatar
    October 14th, 2020, 01:19 PM
    daver2 replied to a thread VAX Haul... in DEC
    Thanks for the links. Another chance conversation the other day with a remote work colleague *** may *** have located another stash of...
    79 replies | 2897 view(s)
  • daver2's Avatar
    October 13th, 2020, 07:50 AM
    daver2 replied to a thread VAX Haul... in DEC
    I smoke tested the terminals I had acquired - a bit disappointing :-(... I have one VT220 (white) and one VT420 (green) that are OK. The other...
    79 replies | 2897 view(s)
  • daver2's Avatar
    October 8th, 2020, 02:46 AM
    My guess would be a German company (with the umlauts). I searched for "Loetseite" (replace the umlauted "o" with "oe") and the most hits that came...
    2 replies | 151 view(s)
  • daver2's Avatar
    October 7th, 2020, 01:43 AM
    daver2 replied to a thread VAX Haul... in DEC
    >>> but I'd like a DEC one. Same here (or the digitising tablet - probably even rarer)... I'll keep an eye out. Whilst chatting to another...
    79 replies | 2897 view(s)
  • daver2's Avatar
    October 7th, 2020, 12:46 AM
    daver2 replied to a thread VAX Haul... in DEC
    If I am reading/understanding the error section of the manual correctly, your DZ 003 error is a missing mouse. DZ 002 is a missing keyboard. Yes,...
    79 replies | 2897 view(s)
  • daver2's Avatar
    October 7th, 2020, 12:32 AM
    daver2 replied to a thread VAX Haul... in DEC
    >>> Next task will be to get DECwindows Motif running That's my next job... Dave
    79 replies | 2897 view(s)
  • daver2's Avatar
    October 6th, 2020, 02:08 PM
    daver2 replied to a thread VAX Haul... in DEC
    So, it is smart enough to spot that there is no monitor connected. That is the first time I have come across that in a machine! I managed to erase...
    79 replies | 2897 view(s)
  • daver2's Avatar
    October 6th, 2020, 09:57 AM
    daver2 replied to a thread VAX Haul... in DEC
    When I get my cable and smoke test the monitor (:-)) I will check. Thanks. I will look in the manual and see if I can decode how you got that....
    79 replies | 2897 view(s)
  • daver2's Avatar
    October 6th, 2020, 07:45 AM
    daver2 replied to a thread VAX Haul... in DEC
    I picked up my piece of paper today that has the results of the console SHOW ERROR output: ? 001 1 NVR 0025 ?? 001 2 LCSPX 0200 015 0206 60...
    79 replies | 2897 view(s)
  • daver2's Avatar
    October 6th, 2020, 07:43 AM
    daver2 replied to a thread VAX Haul... in DEC
    I assume (!) it is completely (over)writing all of the data on the disk... It may also be reading and verifying it as well of course. I can see...
    79 replies | 2897 view(s)
  • daver2's Avatar
    October 5th, 2020, 02:18 PM
    daver2 replied to a thread VAX Haul... in DEC
    2 more SCSI disks erased tonight... 2 more tomorrow night perhaps :-)? Takes 1 hr 15 minutes for a 1 GB drive on a 100 MHz VAX station 4000 model...
    79 replies | 2897 view(s)
  • daver2's Avatar
    October 4th, 2020, 01:21 PM
    daver2 replied to a thread VAX Haul... in DEC
    Dave (g4ugm), I am missing the 3W3 to BNC cable from the VAX station itself. I do have the monitor (if it works) so I just need the bog...
    79 replies | 2897 view(s)
  • daver2's Avatar
    October 4th, 2020, 11:44 AM
    daver2 replied to a thread VAX Haul... in DEC
    Another SCSI disk erased... Started cleaning up the cases... Removed the covers from the VT420s (all green tubes by the codes) and blew out the...
    79 replies | 2897 view(s)
  • daver2's Avatar
    October 3rd, 2020, 01:37 PM
    Yep, there is a major flaw in the emulator I am using. The emulator doesn't bump the PC on for every instruction it reads. As a result the...
    21 replies | 1373 view(s)
  • daver2's Avatar
    October 3rd, 2020, 01:22 PM
    I solved the problem with the stack. I slightly re-wrote that part of the emulator. I then found the assembler I was using (to assemble the...
    21 replies | 1373 view(s)
  • daver2's Avatar
    October 3rd, 2020, 12:10 PM
    I suspect your two problems (/IRQ = high and no video) are caused by separate things - but the same IC. Normally, /IRQ = high would only mean that...
    47 replies | 1379 view(s)
  • daver2's Avatar
    October 3rd, 2020, 11:47 AM
    daver2 replied to a thread VAX Haul... in DEC
    Roland, I will take a few pictures of what I hauled away once I have got it into a presentable state... I didn't have my camera when I piled it...
    79 replies | 2897 view(s)
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About daver2

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About daver2
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UK - Worcester
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SW/HW design engineer

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