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  1. Thread: "Bell Key"

    by mwillegal
    Replies
    22
    Views
    1,412

    yes they are still made. ...

    yes they are still made.

    https://www.solutionsinplastic.com/keycap-manufacturing/
  2. Thread: "Bell Key"

    by mwillegal
    Replies
    22
    Views
    1,412

    The original Apple II keyboard is a slightly...

    The original Apple II keyboard is a slightly modified Datanetics keyboard, very similar to the Datanetics, rev D keyboard that was used with some Apple 1 computers. That keyboard includes the same...
  3. Replies
    30
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    4,438

    http://www.willegal.net/scelbi/scelbal.htm ...

    http://www.willegal.net/scelbi/scelbal.htm


    Are you looking for SCELBAL on paper tape or cassette tape? Most original owners of 8008 systems bought the book and typed it in, sales of paper tape...
  4. Replies
    5
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    465

    Pretty simple - you have AppleSoft ROMs on the...

    Pretty simple - you have AppleSoft ROMs on the ROM card probably with an autoboot monitor and Integer BASIC on the motherboard, The 2 empty sockets are normal for a system with Integer BASIC, though...
  5. SCELBI/8008 Digital Group Video Software available for download

    I've put up on my website a new MCMON (a tiny 256 byte monitor for the 8008) that supports SCELBI keyboard interface input and Digital Group Video card out.

    I also have a port of SCELBI hangman...
  6. Thread: Overlooked?

    by mwillegal
    Replies
    25
    Views
    2,018

    Although the Mark-8, SCELBI and Altair didn't...

    Although the Mark-8, SCELBI and Altair didn't come with much in the way of memory and I/O, it wasn't long before you could get or build memory, video cards, keyboards and a great variety of add on...
  7. Replies
    9
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    1,236

    Be careful testing the MM5740, many have...

    Be careful testing the MM5740, many have intermittent failure signatures, they start generating characters without a keypress only after they warm up. I spent some time trying to determine if there...
  8. Replies
    16
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    4,663

    documentation is available, though currently not...

    documentation is available, though currently not in one place. Once I finish my enclosure, I'm going to put together everything I have into one doc.

    the bom and layout from my blog is accurate. ...
  9. Replies
    16
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    4,663

    I have one of my reproduction Digital Group Video...

    I have one of my reproduction Digital Group Video cards working and am making the rest of the batch available for $50 each (domestic USA only, international shipping rates have gone out of sight and...
  10. This changed over time as the design was revised...

    This changed over time as the design was revised and enhanced. there is a list of parts for the rev 0 in my reproduction build manual

    https://www.willegal.net/appleii/assembly-v2.2.pdf
    ...
  11. Replies
    3
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    470

    they are integer BASIC games. -Mike

    they are integer BASIC games.

    -Mike
  12. Replies
    3
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    470

    The first version I'm aware of is break-out, ...

    The first version I'm aware of is break-out, from the red book. Later, they changed the name to avoid problems with Atari. Also try Dragon Maze - I love that game, though I think the red book...
  13. Replies
    16
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    4,663

    Reproduction Digital Group Video Cards on order

    I finished the reproduction Digital Group Video Card PCB layout a few months ago. This summer, I've been busy with other projects, but I've finally ordered a batch of PCBs. I should have them in...
  14. Replies
    31
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    2,311

    Apple II rev 0 boards were not buggy. There were...

    Apple II rev 0 boards were not buggy. There were some improvements, enhancements and cost reductions made along the way, but for all intents and purposes an Apple II rev 0 PCB would reliably run...
  15. Replies
    31
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    2,311

    It's not clear to me that the bare boards were...

    It's not clear to me that the bare boards were sold in advance of complete units, but it's clear that they were sold at the same time for a while. I had a friend that bought a bare board, while I...
  16. Replies
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    781

    Possibly the capacitor in the speaker driver...

    Possibly the capacitor in the speaker driver circuit?

    -Mike W.
  17. Replies
    9
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    1,298

    Tooling for injection molding is extremely...

    Tooling for injection molding is extremely expensive for small runs for an item of this size. I'm thinking that some kind plastic/resin casting technique was used, which is suitable for small...
  18. Thanks for the comment - this sort of feedback...

    Thanks for the comment - this sort of feedback means a lot to me.

    I'm not out of the vintage computer hobby, it's just that I'm more interested in spending my limited vintage computer time on...
  19. Brain Board Gerber files released for download

    Since I'm no longer making or selling Brain Boards, I've made the Gerber files and CAD files available for download from my website. This board has been cloned by a few different folks, but if you...
  20. Replies
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    3,727

    I'm going out on a limb and say it's a solid...

    I'm going out on a limb and say it's a solid state 800BPI reel to reel tape emulator that would be used in place of an old fashioned 9 track reel to reel tape drive. We could probably get more...
  21. Replies
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    1,511

    This only makes sense if there were a number of...

    This only makes sense if there were a number of valuable stolen objects floating around that could be fairly easily identified by the original owners. At this point, I don't think they exist, at...
  22. The mechanism should operate smoothly. The old...

    The mechanism should operate smoothly. The old dried up grease in these drives can be difficult to remove, but take the time to get all the old stuff off. You should use a light plastic compatible...
  23. Unless it is completely off, radial alignment...

    Unless it is completely off, radial alignment shouldn't greatly affect formatting a floppy. It should only affect drive to drive compatibility. Since it sometimes works, you might still have a...
  24. Are you trying to debug the internal drive with...

    Are you trying to debug the internal drive with the shield between the floppy and the CRT removed?

    -Mike Willegal
  25. Replies
    73
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    6,281

    You really need to understand the considerable...

    You really need to understand the considerable limitations of the 8008 and other available processors to really understand how good the 8080 was (for 1974). Also, and some people hold different...
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