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  • Mike_Z's Avatar
    March 27th, 2020, 08:04 AM
    Well, it has been working 'as is' for a long time. I suppose that I could eliminate some of them in the future. The worst case length is under 10...
    23 replies | 580 view(s)
  • Mike_Z's Avatar
    March 27th, 2020, 06:49 AM
    This is an interesting topic. I have corrected (changed) a number of pull up situations. The machine operates the same, but maybe it will weed out...
    23 replies | 580 view(s)
  • Mike_Z's Avatar
    March 24th, 2020, 09:57 AM
    Since I have been making new boards for my 8080 CPM 2.2 machine, I have a couple of design questions. They are in regards to pull up and down...
    23 replies | 580 view(s)
  • Mike_Z's Avatar
    March 23rd, 2020, 01:35 PM
    Yup, I made a special effort to get the silver plated wire and new sockets (machined?) The tightness is the only question. I feel that they are ,...
    28 replies | 1491 view(s)
  • Mike_Z's Avatar
    March 23rd, 2020, 12:53 PM
    I've been running every memory test program I have, just to keep the machine running. So far it ran for a couple hours yesterday and nearly 8 hours...
    28 replies | 1491 view(s)
  • Mike_Z's Avatar
    March 22nd, 2020, 09:38 AM
    Dwight, that's an interesting method. I don't have a micro volt voltmeter. But should I run across one, this would be a good use for it. Hugo,...
    28 replies | 1491 view(s)
  • Mike_Z's Avatar
    March 21st, 2020, 03:55 PM
    Well again, I think maybe I was a little generous with the soldering iron heat on this spot. This could have resulted in the charring and the high...
    28 replies | 1491 view(s)
  • Mike_Z's Avatar
    March 21st, 2020, 12:12 PM
    Not sure. The motherboard is an original IMSAI mother board that was scraped out. The new sockets I put on the board were the third set in the mother...
    28 replies | 1491 view(s)
  • Mike_Z's Avatar
    March 21st, 2020, 09:48 AM
    Well.... I'll be! A while back I mentioned a Frustration problem with my home made 8080 CPM 2.2 machine. Occasionally it would act up and refuse to...
    28 replies | 1491 view(s)
  • Mike_Z's Avatar
    March 21st, 2020, 09:47 AM
    Mike_Z replied to a thread Frustrating problem Pt 3 in DEC
    Sorry I wanted to post thiso nthe CPM side. Mike
    2 replies | 220 view(s)
  • Mike_Z's Avatar
    March 21st, 2020, 09:27 AM
    Mike_Z started a thread Frustrating problem Pt 3 in DEC
    Well.... I'll be! A while back I mentioned a Frustration problem with my home made 8080 CPM 2.2 machine. Occasionally it would act up and refuse to...
    2 replies | 220 view(s)
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About Mike_Z

Basic Information

About Mike_Z
Biography:
Retired Old Steam Power Plant Engineer
Location:
Near Milwaukee Wisconsin
Interests:
Old stuff, computers, cars, furniture, houses
Occupation:
Retired

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March 27th, 2020 08:04 AM
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December 1st, 2013
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