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Type: Posts; User: Mike_Z

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  1. Replies
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    When I was trouble shooting my EAE, my boards...

    When I was trouble shooting my EAE, my boards refused to divide correctly, I had a similar problem reading the schematics. What I did was to print the drawing out in large scale. When the drawing was...
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    Jack, I ran the 2nd board this morning with the...

    Jack, I ran the 2nd board this morning with the AC INC program 26 for nearly an hour and it is still running with no problems. To disable Q1, remove the 328 chip and connect a jumper from the...
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    Sounds to me that the boot loader is working to...

    Sounds to me that the boot loader is working to the point of properly loading the boot code, the PDP8E takes off and runs, then, in my opinion the boot loader comes back into the picture and confuses...
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    The black in the middle of the picture is...

    The black in the middle of the picture is discolored fish paper that is used for insulation between the winding and the slot. The winding under the fish paper (it's not really paper, but something...
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    Before you think about rewind, you could look at...

    Before you think about rewind, you could look at the bearings. Many times the fan and or motor bearings are either worn or just plugged with dust and dirt. It may be worthwhile to attempt some...
  6. Vince, I printed out a few of the handles and...

    Vince, I printed out a few of the handles and they work pretty good.
    53604
    MIke
  7. I really like my loader, which is now part of...

    I really like my loader, which is now part of Vince's memory board. Remember patience is virtue. Seems the faster I go the more mistakes I make. I think that is a corollary of Einstein's General...
  8. My PDP8E ran a Kearny and Trecker milling...

    My PDP8E ran a Kearny and Trecker milling machine. You could program it via Mylar (paper) tape. Basically, the computer would control the x and y axis of a large table and the z axis of a rotating...
  9. Replies
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    I wanted to test the keyboard Lock LED. I had...

    I wanted to test the keyboard Lock LED. I had thought that XON/XOFF would do this, but apparently not. I added XON/OFF to my PDP8E test program and watched for the Lock LED to light, but it did not....
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    Well..... I've been busy assembling Vince's new...

    Well..... I've been busy assembling Vince's new memory and boot board over the past week and have not had a chance to work on the C-IOTH keyboard. AND the weather is turning to Model T time. But,...
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    This morning, I started up the PDP8E, the logic...

    This morning, I started up the PDP8E, the logic analyzer and the C_IOTH terminal. I stretched out sample rate so that I could get 2 or 3 seconds of waveform on the LA. Again I connected up to see the...
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    These switches are difficult to get anything into...

    These switches are difficult to get anything into them. But... they come apart easily, by loosen up a couple tabs. I did repair two this way and one was toast. So I'll try to repair them, but we will...
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    Over the last couple of days I wrote a short...

    Over the last couple of days I wrote a short program on the PDP8E that will flash the C-IOTH LED's. This test program will allow me to connect up the logic analyzer to see how the monitor sends this...
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    Chuck, I think I played with the patch area in...

    Chuck, I think I played with the patch area in the past, but do not remember exactly how it worked. Maybe when I have more time or the need I'll attempt to figure it out again and see if it works.
    ...
  15. Thread: PDP8 OS8 books

    by Mike_Z
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    596

    Accordion and tube music gets my heart going!...

    Accordion and tube music gets my heart going! Name the date. Mike
  16. Thread: PDP8 OS8 books

    by Mike_Z
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    596

    Lived on Glenora for nearly 50 years and most...

    Lived on Glenora for nearly 50 years and most likely will die here. With as much iron as I own, moving would be a LOT of trouble. I just received two of Vince's 32k memory boards. Hopefully I can...
  17. Thread: PDP8 OS8 books

    by Mike_Z
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    9
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    596

    You lucky dog! I've been looking for an OS/8...

    You lucky dog! I've been looking for an OS/8 handbook like that for a while, with no luck. I can read on the computer, but there is nothing like having a book in these old hands. Mike
  18. Replies
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    Chuck, WS 3.0 has a Zenith, but for some reason,...

    Chuck, WS 3.0 has a Zenith, but for some reason, the INSTALL program hangs after it tries to install it. No matter, I do not intend to use this monitor on the CP/M machine anyway.
    Today, I thought...
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    This morning I get up early to replace the three...

    This morning I get up early to replace the three bad switches on my 'good' keyboard. The first switch was definitely bad, but the second switch, which would close while on the CB, would close once it...
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    Actually, Chuck, I'm wondering why the delete key...

    Actually, Chuck, I'm wondering why the delete key doesn't delete a character on the C-ITOH screen when the RX and TX are connected. Using the backspace or cursor keys, placing the cursor over a...
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    I found a couple hours to work on the keyboards...

    I found a couple hours to work on the keyboards today. I decided to use the keyboard that had only 3 bad switches as the good keyboard. Both keyboards seemed to function well, except for the bad...
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    Today, again, I only found a little time to spend...

    Today, again, I only found a little time to spend on the keyboards, but progress was made. The actions I'm about to mention I applied to each keyboard. First I lifted the 7805 regulator and replaced...
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    Well..... today I found some time to look at the...

    Well..... today I found some time to look at the two keyboards I have just received. Both look the same, although one has had it's coiled cord replaced at one time. There is no corporate logo on...
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    You did a great job of packaging up these...

    You did a great job of packaging up these keyboards. There was no signs of trauma on the box or internally at all. And the keyboards appear just as in your pictures. Hope to get to these little gems...
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    Last month, Witchy and I made a deal on his...

    Last month, Witchy and I made a deal on his keyboards. After some discussion regarding shipping etal., the keyboard package was posted and started out on a circuitous path from the UK to my house....
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