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  • DougIngraham's Avatar
    February 26th, 2021, 07:17 AM
    DougIngraham replied to a thread RX01 floppy drive adventures in DEC
    I have 2 RX01's and an RX02. I am on a road trip right now so I can't get any photos until I get home. The first of the RX01's I got was in the...
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    40 replies | 1940 view(s)
  • DougIngraham's Avatar
    February 24th, 2021, 09:06 PM
    DougIngraham replied to a thread What did I do to my PDP-8 today. in DEC
    I spent the last couple of days working on my OS/8 handler book. I expanded the section on the OS/8 boot process adding the RK05 boot loader, the...
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    223 replies | 15423 view(s)
  • DougIngraham's Avatar
    February 23rd, 2021, 06:59 AM
    DougIngraham replied to a thread RX01 floppy drive adventures in DEC
    Going back to post #11, the rack mount cover was attached to the rack and not the drive. 15 minutes after the drive was pulled from the rack the...
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    40 replies | 1940 view(s)
  • DougIngraham's Avatar
    February 21st, 2021, 01:03 PM
    DougIngraham replied to a thread What did I do to my PDP-8 today. in DEC
    I said that. I did imply that I was a little bit nuts to even bother writing this didn't I? A PDP-8 at around 500 watts is not a very efficient...
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    223 replies | 15423 view(s)
  • DougIngraham's Avatar
    February 21st, 2021, 09:21 AM
    DougIngraham replied to a thread What did I do to my PDP-8 today. in DEC
    That is what I was referring to. I committed a crime when I didn't take it. My punishment is that now when I want one I don't have one. I am...
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    223 replies | 15423 view(s)
  • DougIngraham's Avatar
    February 20th, 2021, 07:50 PM
    DougIngraham replied to a thread What did I do to my PDP-8 today. in DEC
    From what I can see in the photos, those are nice looking Teletypes. I should probably get a teletype of some kind. I used one in high school...
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    223 replies | 15423 view(s)
  • DougIngraham's Avatar
    February 15th, 2021, 09:12 AM
    DougIngraham replied to a thread RX01 floppy drive adventures in DEC
    Very noisy! I have been considering leaving the heads loaded all the time. Would it cause extra head wear? Would it cause the media to wear...
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    40 replies | 1940 view(s)
  • DougIngraham's Avatar
    February 9th, 2021, 09:14 PM
    DougIngraham replied to a thread What did I do to my PDP-8 today. in DEC
    Vince found a couple of bugs in my help loader inspired serial disk boot loader so I corrected those. This is very close. Vince is working on...
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    223 replies | 15423 view(s)
  • DougIngraham's Avatar
    February 6th, 2021, 06:27 AM
    DougIngraham replied to a thread What did I do to my PDP-8 today. in DEC
    I didn't invent this. It is the way the old help loader works (DEC-08-LHAA-D). There is a PDF of the writeup on Vince's site. dec-08-lhaa-d.pdf...
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    223 replies | 15423 view(s)
  • DougIngraham's Avatar
    February 5th, 2021, 01:24 PM
    DougIngraham replied to a thread What did I do to my PDP-8 today. in DEC
    Hopefully I will beat the avid reader of my boot code when they want to point out how I messed up. I have found two issues. First one is that the...
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    223 replies | 15423 view(s)
  • DougIngraham's Avatar
    February 5th, 2021, 07:05 AM
    DougIngraham replied to a thread What did I do to my PDP-8 today. in DEC
    This is my whole reason for doing it. I have a Straight 8 and an 8/i neither of which have boot boards. Toggling in the RIM loader used to be fun. ...
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    223 replies | 15423 view(s)
  • DougIngraham's Avatar
    February 4th, 2021, 11:08 PM
    DougIngraham replied to a thread What did I do to my PDP-8 today. in DEC
    The intention is that this will be a shorter boot sequence for those who do not have a boot board with the serial disk boot in it. I am thinking of...
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    223 replies | 15423 view(s)
  • DougIngraham's Avatar
    February 4th, 2021, 08:25 PM
    DougIngraham replied to a thread What did I do to my PDP-8 today. in DEC
    While Vince and Kyle are consolidating Serial Disk for an update to Github I decided to work on a shorter boot for the older machines that do not...
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    223 replies | 15423 view(s)
  • DougIngraham's Avatar
    February 3rd, 2021, 08:35 AM
    DougIngraham replied to a thread Reality check - PDP-8/F on Ebay in DEC
    Before he passed my friend Warren had on his list to make a replica Straight 8. A little one. It would have all the R, S, W and G cards in the same...
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    25 replies | 1182 view(s)
  • DougIngraham's Avatar
    February 2nd, 2021, 10:01 PM
    DougIngraham replied to a thread Reality check - PDP-8/F on Ebay in DEC
    The scary thing about all this is that we don't know what they guy who won it was willing to pay, only what they guy who didn't win was. What...
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    25 replies | 1182 view(s)
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About DougIngraham

Basic Information

About DougIngraham
Biography:
Retired now. Worked with computers since 1973.
Location:
Rapid City, SD USA
Interests:
PDP-8's, SOL-20. Photography, Electronics, 3D modeling and printing, Space stuff, EV conversions.
Occupation:
Retired, Network Analyst, Consultant, Programmer, Mainframe maintainer, TV Broadcast Engineer

Signature


Doug Ingraham
2nd owner of Straight 8 SN1173
5 other PDP-8's including an 8/i and a DECSet 8000
SOL-20

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