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  1. Thread: UC17 question

    by wa2flq
    Replies
    38
    Views
    582

    On the programming side of a "digital" computer,...

    On the programming side of a "digital" computer, its all ones and zeros.

    One the electronic side, it is all analog. Sometimes shifting a signal by just a fraction in voltage and/or time will...
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    Most of the time, a bus initialization clears the...

    Most of the time, a bus initialization clears the LTC CSR which prevents those.

    On the 11/03 did not have a CSR for LTC. In most cases, another board with the LTC CSR was required (BDV11-AA). ...
  3. Thread: UC17 question

    by wa2flq
    Replies
    38
    Views
    582

    There is a marginal condition on the serial...

    There is a marginal condition on the serial interface. It could be the VT320, the 11/84 serial port or the cable. Bad or incorrect grounding, weak charge-pump on the +-15v supplies for the...
  4. Thread: UC17 question

    by wa2flq
    Replies
    38
    Views
    582

    Glad to see that you have access to FRD again. ...

    Glad to see that you have access to FRD again.


    I'll defer to others on RSTS. i don't have much configuration experience on this OS.

    Jerry
  5. Thread: UC17 question

    by wa2flq
    Replies
    38
    Views
    582

    The fact that you got some of the "**** ****...

    The fact that you got some of the "**** **** Emulex" message from the TMSCP FRD is promising. Slowly you are closing in.

    If the context of changing something "Trusted" from my earlier note...
    ...
  6. Thread: UC17 question

    by wa2flq
    Replies
    38
    Views
    582

    We like to think that the electronics we have...

    We like to think that the electronics we have will work fine in xx years from now, but that's not going to be the reality. I have some old video cameras that won't turn on. One of my M8192's won't...
  7. Thread: UC17 question

    by wa2flq
    Replies
    38
    Views
    582

    Looks like the code to assist the controller in...

    Looks like the code to assist the controller in FRD mode looks okay then.


    Make sure the terminal (or emulation) is set up for correct speed, parity and stop bits. I don't know if there is...
  8. Thread: UC17 question

    by wa2flq
    Replies
    38
    Views
    582

    I will venture that this code passes terminal...

    I will venture that this code passes terminal data back and forth between the console serial port and UC17 controller. On some DEC cpu boards, the console is not accessible from the Unibus/Qbus...
  9. Thread: UC17 question

    by wa2flq
    Replies
    38
    Views
    582

    I agree that your SD card looks intact. You are...

    I agree that your SD card looks intact. You are on the latest version of firmware I am aware of. No FRD success with no drives rules out SCSI2SD issues.

    The first instruction is a MOV #340,...
  10. Thread: UC17 question

    by wa2flq
    Replies
    38
    Views
    582

    Under OSX you should be able to dump the SD card....

    Under OSX you should be able to dump the SD card.

    # use this to find the device the SD card is attached to. Make sure you don't Initialize when OS X complains it cannot "read" the disk. Choose...
  11. Thread: UC17 question

    by wa2flq
    Replies
    38
    Views
    582

    The FRD procedure does trigger a download of code...

    The FRD procedure does trigger a download of code from the PROM to the memory of your machine. Since you can boot normally from the card with another disk, that rules out quite a few issues.
    ...
  12. Thread: UC17 question

    by wa2flq
    Replies
    38
    Views
    582

    If you are following...

    If you are following UC1751001-C_UC17_Dec90_text.pdf make sure you are using xxxxx and yyyyy values from table 4-13 - MSCP. A quick read section 4.5.9 might make someone believe that the yyyyy...
  13. This board has both the KWV11 (A or C) and the...

    This board has both the KWV11 (A or C) and the vendors own Clock/Calendar implementation. Dec did not include a TOY clock until pretty late in the PDP/LSI 11 timeline.

    These boards were used to...
  14. Replies
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    5,655

    The Peritek VRG-Q could do 512x512. It used a...

    The Peritek VRG-Q could do 512x512. It used a HD46505 CRTC chip.

    The memory could be mapped (16KW) for machines that had 18 or 22 bit space. Alternately a 32 word window into the...
  15. I remember coming across this back when I had a...

    I remember coming across this back when I had a PDP 11/34. The cables running from the controller to the KY11-LB laid pretty flat in the chassis. I had DEC gear with more than a few data cables no...
  16. Replies
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    Congratulations! Learned a few new things...

    Congratulations! Learned a few new things myself.

    Try a .DIFF/BIN RT11SJ.40 RT11SJ.060 and the differences and locations will be quickly revealed.

    I know you didn't sort out the DD emulation....
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    It definitely possible. The console addresses...

    It definitely possible. The console addresses are easily patchable w/o having to generate a new system. See AA-PD6NA-TC_RT-11_System_Internals_Manual_Aug91.pdf Chapter 4, especially sections 4.3...
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    I see in your later postings that you have made...

    I see in your later postings that you have made good progress in sorting out the various questions or issues - congrats. In regards to the question above, its been a couple of decades since I last...
  19. Replies
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    Note: In addition to placing 0 in the vector and...

    Note: In addition to placing 0 in the vector and status word for any interrupt you are testing, place a 0 starting at address 0.


    That will insure the machine will halt when the interrupt...
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    The 11/34 should clear PSW after power startup or...

    The 11/34 should clear PSW after power startup or Control - INIT from the programmers console. FYI - the 11/34 has both the addressable PSW and the MTPS/MFPS instructions.

    I suggested the test...
  21. Replies
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    Enable the LTC using just the Console DL11-W...

    Enable the LTC using just the Console DL11-W board.

    Use address 177546 instead of 176500 and vector 100 instead of 300. Enable the RTC switches.

    That should tell you if the basic interrupt...
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    Yes insert R to T if you haven't already. ...

    Yes insert R to T if you haven't already.



    Great!



    This result and layout appears correct too!
  23. Replies
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    Hi Maurice, Summarizing the information from...

    Hi Maurice,

    Summarizing the information from your notes I think we have the following.

    1) The 11/23 processor is 22bit (Rev C)
    2) The backplane H9270 was originally 18bit. See...
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    Great, you've got three good memory boards. So...

    Great, you've got three good memory boards.

    So the problem is when you mix them together. The most likely causes are:

    1) Incorrect configuration setting on the memory card(s).

    2) CPU and/or...
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    After reviewing the strapping, given that you had...

    After reviewing the strapping, given that you had this card set to 18bits, I still confused as to why the MEMX program can show more than 128K words of memory.


    I would strap the M8059-KA...
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