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  1. pahp

    PDP-12 #435 at the University of Minnesota Duluth

    Thanks -- we can look into that.
  2. pahp

    PDP-12 #435 at the University of Minnesota Duluth

    Is the hacked code available somewhere (@vrs42 )? Could be a good place to start from...
  3. pahp

    PDP-12 #435 at the University of Minnesota Duluth

    Ah, I see you have text-mode output!
  4. pahp

    PDP-12 #435 at the University of Minnesota Duluth

    That sounds like fun, but would your video code work on the PDP-12's VR12? You probably know this, but VR12 uses LINC instructions for display, etc. (Perhaps you were suggesting that we modify your code to use LINC instructions to add PDP-12 support?) Regardless, it sounds like a fun thing to...
  5. pahp

    PDP-12 #435 at the University of Minnesota Duluth

    In other news, @ZachyCatGames got PDP-12 LIFE going today: https://photos.app.goo.gl/MwbcjwZ6hxyA3m3F8
  6. pahp

    PDP-12 #435 at the University of Minnesota Duluth

    What is "mark parity" in this context?
  7. pahp

    PDP-12 #435 at the University of Minnesota Duluth

    @ZachyCatGames got errors trying to compile FOCAL-12 with PAL12, but got it to compile with your pal -e, @vrs42 -- thanks!
  8. pahp

    PDP-12 #435 at the University of Minnesota Duluth

    Thanks!
  9. pahp

    PDP-12 #435 at the University of Minnesota Duluth

    Oh, excellent! I should have tried googling for pal12... 🤦‍♂️Thank you!
  10. pahp

    PDP-12 #435 at the University of Minnesota Duluth

    Hi folks, here's a random question. We are playing around with Vince's dump of FOCAL-12. From the PDFs, it looks like it was intended to be assembled using LAP6-DIAL. PAL8 doesn't seem to be able to handle the inclusion of LINC mnemonics. @ZachyCatGames was able to get it to assemble by...
  11. pahp

    PDP-12 #435 at the University of Minnesota Duluth

    Thanks!
  12. pahp

    PDP-12 #435 at the University of Minnesota Duluth

    I would say sure, if you don't mind! I always learn something new. Thanks!
  13. pahp

    PDP-12 #435 at the University of Minnesota Duluth

    Thanks for the quick turnaround, @ZachyCatGames !
  14. pahp

    PDP-12 #435 at the University of Minnesota Duluth

    I don't get this either. I didn't even realize, until I looked at the Pocket Reference just now, that the I bit in SNS instructions inverts the condition (which is cool): If I understand you, you're saying that it's weird that both 0446 and 0467 would be SKPs, since presumably both...
  15. pahp

    PDP-12 #435 at the University of Minnesota Duluth

    Sure! It would be nice to have the sequence for posterity. I would be happy to turn the scans into a "booklet PDF". I agree that the color is nice -- nice to know how it evolved over time. At this point, I don't think that a higher-res scan is necessary. Very interesting! Some of these look...
  16. pahp

    PDP-12 #435 at the University of Minnesota Duluth

    Thanks, Mike!
  17. pahp

    PDP-12 #435 at the University of Minnesota Duluth

    Hi @BitWiz -- thank you! Wow, this looks fantastic and is in many places clearer than the bitsavers one. I've attached some comparison images. It helps that most of the text is black. I will extract the images out of the PDF and make a directly printable version as you mention. Campus has a...
  18. pahp

    PDP-12 #435 at the University of Minnesota Duluth

    Hey all, random question... do any of you have a better hardcopy of the PDP-12 pocket reference (bitsavers). We print and staple versions of this for use in the lab, handing out as feelies, etc., but the bitsavers PDF is not the clearest and the trove we got with #435 did not include one. I'd...
  19. pahp

    PDP-12 #435 at the University of Minnesota Duluth

    Ahhhhh.... @DougIngraham thanks! Yeah, it was definitely with PIP. Thanks. Now that you mention this, I have a feeling that we've run into this issue before. We will do things that right way. @vrs42 What is the significance of the different dumps in your archive?
  20. pahp

    PDP-12 #435 at the University of Minnesota Duluth

    Hi @vrs42 -- we tried it and got some errors. Since it sounds like it worked for you, we assume we're not doing it right. @ZachyCatGames used PIP to get 57236.bin to our OS/8 and saved it as FOC12.BN. Then, we tried to EXEC it: .EXEC SDA3:FOC12.BN BAD CHECKSUM, FILE 1 *^C Then, we tried using...
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