Image Map Image Map
Tab Content
  • wa2flq's Avatar
    June 23rd, 2019, 03:03 PM
    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...
    2 replies | 84 view(s)
  • wa2flq's Avatar
    June 20th, 2019, 05:34 PM
    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...
    28 replies | 4892 view(s)
  • wa2flq's Avatar
    June 17th, 2019, 09:19 PM
    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...
    3 replies | 157 view(s)
  • wa2flq's Avatar
    June 14th, 2019, 07:33 PM
    wa2flq replied to a thread PDP-11/34A interrupt problem in DEC
    Congratulations! Learned a few new things myself. Try a .DIFF/BIN RT11SJ.40 RT11SJ.060 and the differences and locations will be quickly...
    28 replies | 658 view(s)
  • wa2flq's Avatar
    June 14th, 2019, 10:13 AM
    wa2flq replied to a thread PDP-11/34A interrupt problem in DEC
    It definitely possible. The console addresses are easily patchable w/o having to generate a new system. See...
    28 replies | 658 view(s)
  • wa2flq's Avatar
    June 13th, 2019, 03:36 PM
    wa2flq replied to a thread PDP-11/34A interrupt problem in DEC
    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...
    28 replies | 658 view(s)
  • wa2flq's Avatar
    June 12th, 2019, 02:51 PM
    wa2flq replied to a thread PDP-11/34A interrupt problem in DEC
    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...
    28 replies | 658 view(s)
  • wa2flq's Avatar
    June 12th, 2019, 11:48 AM
    wa2flq replied to a thread PDP-11/34A interrupt problem in DEC
    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...
    28 replies | 658 view(s)
  • wa2flq's Avatar
    June 12th, 2019, 07:58 AM
    wa2flq replied to a thread PDP-11/34A interrupt problem in DEC
    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....
    28 replies | 658 view(s)
No More Results
About kenwickvs

Basic Information

About kenwickvs
Biography:
Incessant digital hardware designer since 1974. There's no known cure. I have dabbled in low level software as a necessity to support my hardware addiction.
Location:
Raleigh, North Carolina, USA
Interests:
Digital Design, Real-time systems, Complex mechanical systems. How things work.
Occupation:
Retired engineering and manufacuturing company owner.

Statistics


Total Posts
Total Posts
109
Posts Per Day
0.14
General Information
Last Activity
April 6th, 2019 05:46 PM
Join Date
May 1st, 2017
Referrals
1

2 Friends

  1. kernspaltung kernspaltung is offline

    Junior Member

    kernspaltung
  2. wa2flq wa2flq is online now

    Senior Member

    wa2flq
Showing Friends 1 to 2 of 2