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  • elb's Avatar
    June 15th, 2019, 06:23 AM
    elb replied to a thread PDP-11/34A interrupt problem in DEC
    TU58EM seems to be happy, it's the PDP-side that dies. Maybe due to a failed subsequent attempt at transfer? I'll look harder. However, TU58EM...
    28 replies | 578 view(s)
  • elb's Avatar
    June 14th, 2019, 12:09 PM
    elb replied to a thread PDP-11/34A interrupt problem in DEC
    Beautiful, thank you! This was enough to help me understand more what I was looking at. It turns out that I didn't even have to use SIPP, when I...
    28 replies | 578 view(s)
  • elb's Avatar
    June 14th, 2019, 06:14 AM
    elb replied to a thread PDP-11/34A interrupt problem in DEC
    I've done some more learning this morning, but I'm unable to get a usable boot off the RT11 volumes I have for my RL02, and I'm wondering if it's a...
    28 replies | 578 view(s)
  • elb's Avatar
    June 14th, 2019, 05:14 AM
    elb replied to a thread PDP-11/34A interrupt problem in DEC
    Looking at my image files, they appear to be equivalent to the files you posted, except with smaller sectors, which is what I would expect; for...
    28 replies | 578 view(s)
  • elb's Avatar
    June 13th, 2019, 08:17 PM
    elb replied to a thread PDP-11/34A interrupt problem in DEC
    The dominoes keep falling! I was able to bring up PDP11GUI in a VM, and from it I ran a whole slew of XXDP tests; all of the 11/34a CPU tests, the...
    28 replies | 578 view(s)
  • elb's Avatar
    June 13th, 2019, 08:03 PM
    elb replied to a thread PDP-11/34A interrupt problem in DEC
    This concurs with what I have seen. I think if I were using (e.g.) L 001000, S then it would probably clear the priority; however, since I'm halting...
    28 replies | 578 view(s)
  • elb's Avatar
    June 13th, 2019, 02:56 PM
    elb replied to a thread PDP-11/34A interrupt problem in DEC
    OK! I have made some big progress! I still can't load XXDP from tu58em, and I still don't know why. However, I did these things today: Got...
    28 replies | 578 view(s)
  • elb's Avatar
    June 13th, 2019, 09:38 AM
    elb replied to a thread PDP-11/34A interrupt problem in DEC
    I mis-disassembled the instruction; 000620 and 000624 are 105777 177234. 177234 in this case is a negative offset to R7, so it's actually testing...
    28 replies | 578 view(s)
  • elb's Avatar
    June 13th, 2019, 08:55 AM
    elb replied to a thread PDP-11/34A interrupt problem in DEC
    This is a good point, and as I analyzed the crash I was getting yesterday more closely, the PC after trap was at 10 -- but that almost certainly...
    28 replies | 578 view(s)
  • elb's Avatar
    June 12th, 2019, 05:46 PM
    elb replied to a thread PDP-11/34A interrupt problem in DEC
    Sorry, I elided too much! I had set up all the other required state. I used the console to set r6 to 700, 300 to 302, and 302 to 0. I cannot set...
    28 replies | 578 view(s)
  • elb's Avatar
    June 12th, 2019, 02:20 PM
    elb replied to a thread PDP-11/34A interrupt problem in DEC
    You and Don have both mentioned this; this means that my XXDP boot problem is elsewhere, and I am inclined to agree with you and Don that I need to...
    28 replies | 578 view(s)
  • elb's Avatar
    June 12th, 2019, 02:07 PM
    elb replied to a thread PDP-11/34A interrupt problem in DEC
    This is an excellent suggestion, and the results confirmed that I was not seeing an interrupt. However, I checked the PSR and it was set to priority...
    28 replies | 578 view(s)
  • elb's Avatar
    June 12th, 2019, 06:31 AM
    elb replied to a thread PDP-11/34A interrupt problem in DEC
    I want to clarify (I don't seem to be able to edit my post?) that I modified the interrupt test program to test the console DL11-W at 177560/60, and...
    28 replies | 578 view(s)
  • elb's Avatar
    June 11th, 2019, 06:09 PM
    elb started a thread PDP-11/34A interrupt problem in DEC
    Hi all, long time reader first time poster. I probably met some of you at VCF East this year, I attended for the first time. I recently came into...
    28 replies | 578 view(s)
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