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  • Marty's Avatar
    August 17th, 2017, 12:19 PM
    Marty replied to a thread 8080 CPU Quirks in S-100
    Hi All; Chuck, WOW !!! I had Never seen or heard of this Project, This might/would be easier for me to Convert, or try out.. I will take a...
    5 replies | 201 view(s)
  • Marty's Avatar
    August 17th, 2017, 11:14 AM
    Marty replied to a thread 8080 CPU Quirks in S-100
    Hi All; THANK YOU, Chuck for that Link, I have been looking for something like this for YEARS !!! I still would need to transform from...
    5 replies | 201 view(s)
  • Marty's Avatar
    August 17th, 2017, 08:06 AM
    Marty replied to a thread 8080 CPU Quirks in S-100
    Hi All; Mike, as a curious side not,, Dr. Suding wrote a program that Could Tell which of the different 8080 Manufactures were plugged into His...
    5 replies | 201 view(s)
  • Marty's Avatar
    August 9th, 2017, 04:45 PM
    Hi All; Ab0tj, there's one in the S-100 handbook, along with a host of other schematics.. THANK YOU Marty
    16 replies | 477 view(s)
  • Marty's Avatar
    August 9th, 2017, 04:34 AM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; I have copied into my notebook the Finger Connections for the Rom Board And so next is to check them with a Meter.. After that I can...
    103 replies | 3689 view(s)
  • Marty's Avatar
    August 3rd, 2017, 08:50 AM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; I am working on Individual MicroCode Instructions, seeing which word bits are '1's and Using PDP 11/70 Signal Source as a guide for where...
    103 replies | 3689 view(s)
  • Marty's Avatar
    August 1st, 2017, 10:41 AM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; My schedule has changed some.. So, I am copying down post #97 into my notebook.. I just finished copying post #99 into my notebook,...
    103 replies | 3689 view(s)
  • Marty's Avatar
    July 31st, 2017, 01:56 PM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; Dave, Thanks for the thought.. We have done most of the Tests, except for the last few, Which I can try, and see what kind of results I...
    103 replies | 3689 view(s)
  • Marty's Avatar
    July 31st, 2017, 05:09 AM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; Dave, a very Good (like Usual) Explanation of what is Happening, I look forward to Your FORK (and spoon) Logic Explanation.. But, now...
    103 replies | 3689 view(s)
  • Marty's Avatar
    July 30th, 2017, 04:49 AM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; Dave, Thank You for both the encouragement and the advice.. "" work through the logic of what I had previously posted to ensure you...
    103 replies | 3689 view(s)
  • Marty's Avatar
    July 29th, 2017, 09:34 AM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; Between other things, I have the RAC Board on the Extender.. I decided to start with the proms, On first examining on Prom 100, I had...
    103 replies | 3689 view(s)
  • Marty's Avatar
    July 28th, 2017, 06:33 PM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; FritzM, Thank You for Your Input.. This is what I have been basically doing, when I refer to Single Stepping, only I have Not been...
    103 replies | 3689 view(s)
  • Marty's Avatar
    July 28th, 2017, 02:47 PM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; I have confirmed, what Dave stated in Post #82, as far as the signals for E31 and E38.. I now need to switch to the RAC Board and check...
    103 replies | 3689 view(s)
  • Marty's Avatar
    July 28th, 2017, 10:31 AM
    Hi All; They have been spoken for !!!! THANK YOU Marty
    2 replies | 166 view(s)
  • Marty's Avatar
    July 28th, 2017, 08:43 AM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; FritzM, Thank You for Your Response.. "" Hi folks, back from my trip now and ready to help out if I can! "" Yes, We can Always Use...
    103 replies | 3689 view(s)
  • Marty's Avatar
    July 28th, 2017, 06:52 AM
    Hi All; I have 7 DEC H744 5 Volt 25 Amp Power Supplies Need another Good Home.. These came from my PDP 11/40 and PDP 11/45.. I do not Know...
    0 replies | 74 view(s)
  • Marty's Avatar
    July 28th, 2017, 06:36 AM
    Hi All; I have 7 RL02 Diskpacks that need to go to another Good Home.. They are of Unknown shape, they will most likely have dust and they will...
    2 replies | 166 view(s)
  • Marty's Avatar
    July 28th, 2017, 04:56 AM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; Dave, Thanks for the latest analysis.. "" I don't know about you - but I am learning an awful lot this week in tracing through the...
    103 replies | 3689 view(s)
  • Marty's Avatar
    July 27th, 2017, 06:29 PM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; FritzM, Thank You for Your Posting, I have looked back at UBCE E26 pin 11, which is Always High.. Pin 13 is Correct, but pin 12 is Low,...
    103 replies | 3689 view(s)
  • Marty's Avatar
    July 27th, 2017, 12:44 PM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; Dave, I followed the Schematic back to UBCE and found that E26 pin 11 drives it .. And there is a Start Flag Flip-flop E35 that goes to...
    103 replies | 3689 view(s)
  • Marty's Avatar
    July 27th, 2017, 12:12 PM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; Dave, Thanks for Your Help !! "" Try and <START> the program and see if you get a low going pulse on E37 pin 13 when you hit <START>....
    103 replies | 3689 view(s)
  • Marty's Avatar
    July 27th, 2017, 05:05 AM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; Dave, I like and am awed by Your Train of thought.. First, ""Is a card failing to work when you put it on an extender telling us...
    103 replies | 3689 view(s)
  • Marty's Avatar
    July 26th, 2017, 10:37 AM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; Dave, Thank You for the Explanation.. It Looks for Now that I am being Forced to work on the Trap & Misc Control Board first.. Non...
    103 replies | 3689 view(s)
  • Marty's Avatar
    July 26th, 2017, 07:56 AM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; Dave, Thank You for More Information.. You have alot of things for me to check and / or test.. I will copy the two posts from You...
    103 replies | 3689 view(s)
  • Marty's Avatar
    July 26th, 2017, 07:21 AM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; Dave, Thank You for This Tremendous Post.. "" I don't know what use this post has been (if any!) but I have been writing it as I have...
    103 replies | 3689 view(s)
  • Marty's Avatar
    July 26th, 2017, 06:52 AM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; I Found that bit 8 is not working i.e., not being Displayed.. I don't know if it is being written to memory or if it is on the output...
    103 replies | 3689 view(s)
  • Marty's Avatar
    July 26th, 2017, 04:07 AM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; Fritz, Thank You for Your Input.. "" It sounds to me like it might be a faulty switch or logic related to the HALT switch? "" Yes, I...
    103 replies | 3689 view(s)
  • Marty's Avatar
    July 25th, 2017, 06:27 PM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; Well, the Machine really went into the Weeds.. When I press the "CONT" switch, the address shows the '000775 that was what was last...
    103 replies | 3689 view(s)
  • Marty's Avatar
    July 25th, 2017, 05:45 PM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; DDS, Thank You for Your Input.. "" In addition, that area should be initialized in such a fashion that if some wild hardware...
    103 replies | 3689 view(s)
  • Marty's Avatar
    July 25th, 2017, 12:45 PM
    Marty replied to a thread PDP 11/45, Part 6 in DEC
    Hi All; Dave, ""If single stepping the programs at 0 and 1000 work, what I want to see is if STARTing them in RUN mode is different in both cases....
    103 replies | 3689 view(s)
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About Marty

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About Marty
Location:
Boulder , Colorado USA
Interests:
Old Computers mainly S-100

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