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  • Qbus's Avatar
    Yesterday, 06:03 PM
    Qbus replied to a thread PC Shell date in PCs and Clones
    I am using DOS Shell on a GRiD 1550 military laptop running DOS ver 6.20 , discovered that if I enter the correct date 2018 that the system clock...
    11 replies | 169 view(s)
  • Qbus's Avatar
    Yesterday, 10:53 AM
    Qbus started a thread PC Shell date in PCs and Clones
    Whatís the year that I enter for a system that wonít support dates beyond 2000? I have an 386 that running DOS Shell and can set the display to only...
    11 replies | 169 view(s)
  • Qbus's Avatar
    February 16th, 2018, 06:24 AM
    More thought, how hard would it be to locate a 5251 or very unusual dual terminal 5252? Looks like this is necessary to do anything with the system....
    14 replies | 435 view(s)
  • Qbus's Avatar
    February 15th, 2018, 01:53 PM
    Man that’s tempting! If it was not for the fact that my understanding of IBM large frame OS was lacking and the fact that you apparently need a twin...
    14 replies | 435 view(s)
  • Qbus's Avatar
    February 12th, 2018, 06:03 AM
    Think I asked this before and use to know how to do it but am old so will ask again. Anyone know how to format a CD ROM in a modern Windows...
    3 replies | 119 view(s)
  • Qbus's Avatar
    February 8th, 2018, 08:36 AM
    With the AC power removed if you read the DC Resistance across C1 and C2 it should read a high value of around 20 K Ohms each. There are two big...
    21 replies | 928 view(s)
  • Qbus's Avatar
    February 6th, 2018, 01:02 PM
    If you have little or no DC across those two capacitors (C1 and C2) that’s a good thing. On that power supply they bring the incoming AC directly...
    21 replies | 928 view(s)
  • Qbus's Avatar
    February 6th, 2018, 09:02 AM
    We use to have an 11/780 at the university but that was a long time ago, think they were using that rack to house there Alpha Server 4000 but don’t...
    9 replies | 503 view(s)
  • Qbus's Avatar
    February 5th, 2018, 07:23 AM
    Most or at least all the Qbus systems I have seen were set up for RS-232 communications at 9600 baud using DLV11 cards, the 8043 or some variant of...
    21 replies | 928 view(s)
  • Qbus's Avatar
    January 29th, 2018, 07:16 AM
    I started with a 11/23 seven or eight years ago, The KDF-11 manual is your friend! go and download and read it first. After you get the power supply...
    21 replies | 928 view(s)
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About Qbus

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About Qbus
Luddite, technological Idiot. Sped most time trying to reinvent the wheel.
Salisbury Maryland
Antique computers, radio and telecommunications. From land line telegraph to satellite.
Broadcast and Telecommunications engineer, Salisbury University.


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Last Activity
Yesterday 06:06 PM
Join Date
February 23rd, 2011