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  • Fooser's Avatar
    November 13th, 2019, 06:42 AM
    Fooser replied to a thread 520STm Boot Issues in Atari
    I did pop off the lid and the trace side of the board is all that is exposed. Removing it for inspection is not trivial however. My intention was...
    18 replies | 555 view(s)
  • Fooser's Avatar
    November 12th, 2019, 08:57 AM
    Fooser replied to a thread 520STm Boot Issues in Atari
    My thinking also. I'm just not sure how to pursue troubleshooting from this point.
    18 replies | 555 view(s)
  • Fooser's Avatar
    November 10th, 2019, 06:15 AM
    Fooser replied to a thread 520STm Boot Issues in Atari
    My TV doesn't have a composite input. All of my other computers that have a composite output connect just fine to the TV though a modulator. ...
    18 replies | 555 view(s)
  • Fooser's Avatar
    November 8th, 2019, 06:34 AM
    The drive was modded based on this: http://www.atari-wiki.com/index.php/Replace_internal_720k_DD_Floppy_Drive_with_1.44MB_HD_Floppy_Drive I found...
    5 replies | 168 view(s)
  • Fooser's Avatar
    November 8th, 2019, 05:25 AM
    Fooser replied to a thread 520STm Boot Issues in Atari
    I connected to the built in modulator exactly as you described. Interestingly enough, the built in modulater showed no recognizable signal, where as...
    18 replies | 555 view(s)
  • Fooser's Avatar
    November 7th, 2019, 08:01 AM
    Fooser replied to a thread 520STm Boot Issues in Atari
    I've also considered replacing the 6 ROM TOS. I've read (conflicting) posts that I can simply replace the roms with TOS 1.02 or 1.04 if they are...
    18 replies | 555 view(s)
  • Fooser's Avatar
    November 7th, 2019, 07:16 AM
    Fooser replied to a thread 520STm Boot Issues in Atari
    Frankly I don't know if I have the earliest model with TOS in rom or not. I was hoping to be able to tell by what showed on the screen after boot. ...
    18 replies | 555 view(s)
  • Fooser's Avatar
    November 6th, 2019, 12:54 PM
    Fooser started a thread 520STm Boot Issues in Atari
    I purchased a power supply and composite cable off ebay and now that they have arrived it is time to test. I don't have a floppy attached yet but...
    18 replies | 555 view(s)
  • Fooser's Avatar
    October 28th, 2019, 06:58 AM
    Fooser replied to a thread Atari 520 STm Modification in Atari
    Thanks Dave. I've seen a mod something like this for the ZX-81 that disables the RF Modulator and provides composite out but the STm already...
    8 replies | 337 view(s)
  • Fooser's Avatar
    October 27th, 2019, 04:39 PM
    Fooser replied to a thread Atari 520 STm Modification in Atari
    Here's a better look.
    8 replies | 337 view(s)
  • Fooser's Avatar
    October 27th, 2019, 12:23 PM
    I'm trying to determine the purpose of a modification to my Atari 520 STm. Is it a factory or user mod? Something to do with the RF modulator ...
    8 replies | 337 view(s)
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About Fooser

Basic Information

About Fooser
Biography:
Don Mankin
Location:
Arizona, US
Interests:
TRS-80s, Sprigets, RC Airplanes, Foosball
Occupation:
Programmer, PC & Android

Signature


- Don Mankin -

[
TRS-80 Models I, 4, 4p, Coco 2, 100, 102. Tandy 1000 RLX. Osborne 1a.
At
ari 800, 520 STm. Commodore 64.
Amiga 1000. TI-99/A. Sinclair ZX-81]

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