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Keneg

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Posts posted by Keneg

  4. Posted

    On 10/28/2020 at 10:05 PM, lgallair said:

    I recapped the power supply and now the power on all rails is good except for the -5V rail.  It's fluctuating around -3.3v to -3.5v.  I'm not sure how to get the voltage within spec.  There's a variable pot but adjusting that seems to only change the +5v rail.  I had a PC power supply sitting around with the proper voltages (+5v, +12v, and -5v) so I hooked it up to the motherboard.  It booted up to the same screen as before.  I piggy-backed a 4116 RAM chip on each 4116 chip on the board in succession and determined the faulty chip.  I de-soldered it and replaced with a socketed ram chip.  I'm so happy the blown cap didn't damage the main pcb.

    Check the 7905 regulator voltages in and out.  If the input is good, I think -8 or less and the output is bad, it is likely the regulator.  If the input is bad, you need to check components before it.

    • Like 1

  8. Posted

    2 hours ago, GDMike said:

    I found a little fan that operates on 5-12vdc, so I piped 5 to it from a seperate power source, and the fan has rubber padding around it's case and it squeezes in nicely between pins that are standing up and the other side  but sits on top of the cpu, and keeps my pi cool. I also have desktop running on my pi so I can watch the temp AND it's convenient when moving files.

    The RPI3B has a fan on it.  I like the increased speed so will leave it alone.  I have a Win10 machine nearby that I use for downloading.  If I had more room on the desk, using the PI would be nice.

    • Like 1

  12. Posted · Edited by Keneg

    Ok it works and only has to be done once.  Once the file “LT:SC” is in the directory, it will auto load from extended BASIC if the directory is set as DSK1.  Now I just have to figure out how to survive more than 30 seconds.  LOL. I wonder if this was somehow a hidden file on the original disk that doesn’t copy correctly as a form of copy protection.  I think this file should be added to the packages at the sites this can be downloaded from.

    • Like 1

  13. Posted

    I was going to try this first think this morning.  TIPI not working, RPI0 very hot.  Tested power supply, 5.16 volts.  Managed to hook up my RPI3B using a bunch of jumper wires.  Not easy to connect all of the wires, but it is working again!  I did want to try this eventually for the speed increase, so I guess it is OK.  Will try the game later.  Life in retro computing is so interesting.

  17. Posted

    1 hour ago, jedimatt42 said:

     

    And, TIPI is more of a hard drive for you 4A, not a floppy drive, it just has some floppy device name support for usage convenience. And that convenience is good enough for most programs.

     

    When I'm done with my day job today, I'll investigate this.

    Thanks.  Also, I have another issue.  The mouse now just goes to the right and stays there unusable.  I think this happened when I updated to version 2.8.  It used to work.  I have tried it with two USB mice.  Has anyone else reported this issue?

  24. Posted

    9 minutes ago, arcadeshopper said:

    I see a spam of attempt to open a non-existent file on the TIPI log perhaps it's got some hidden file on the disk not copied to the tipi drive

    Sent from my LM-V600 using Tapatalk
     

    So it just won’t work on the real hardware.  Bummer!

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