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Type: Posts; User: groink

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  1. When using the TL866C and , the AT28C16 is...

    When using the TL866C and , the AT28C16 is electronically erasable in the programmer. Running MiniPro v6.60 or Xgpro v9.00, both of them list the AT28C16 @DIP24.

    As for that particular seller, I'd...
  2. For the TL866C, you'll run into issues with the...

    For the TL866C, you'll run into issues with the power needed to program most legacy EPROMs. I would highly recommend locating genuine Atmel AT28C16 modules. These will work great with your...
  3. http://www.willegal.net/appleii/appleii-integer.ht...

    http://www.willegal.net/appleii/appleii-integer.htm

    In a nutshell: EEPROMs won't work on the II Plus without physical modification to the EEPROMs. The link above will help you through the process.
  4. Figured it out! SBASM apparently allows for...

    Figured it out! SBASM apparently allows for preparing assembled code for Apple II DOS 3.3. What threw me off is that I was looking for a directive that did this, but come to find out it involves more...
  5. What you just described actually sounds more like...

    What you just described actually sounds more like MS-DOS than Apple DOS. I know because I used to write 8086/88 code in MS-DOS, and we did have to use a linker to produce an executable. I'm not...
  6. CiderPress - DOS 3.3 - Raw binary $F2 to BIN

    Aloha!!!

    I can't seem to find a solution to the following problem...

    I'm using SBASM 3.0 cross-assembler, assembling in 6502 mode. It assembles the code just fine. The problem is that I'm...
  7. I never tried bringing a II logic board down to...

    I never tried bringing a II logic board down to 16K. Is it as easy as pulling the 32K from it? I would have thought the 48K RAM mapping is hard-wired into the PCB. Based on the earlier logic boards,...
  8. Regarding eBay, the cards are pretty rare. What...

    Regarding eBay, the cards are pretty rare. What makes them rare is that only schools purchased these cards, in an attempt to expand the amount of educational software on an IBM-based computer. At the...
  9. Replies
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    As the previous post said, the IIe keyboard will...

    As the previous post said, the IIe keyboard will not work in a II Plus. On the II Plus, the keyboard encoder was built into the keyboard, or at the very least the encoder was on an encoder board...
  10. You should be able to access the serial interface...

    You should be able to access the serial interface through PR#n, with "n" being the card's phantom slot number, in accordance with the setting of DIP switch S1. Phantom slot number 2 would have switch...
  11. It depends on which word processor you choose. Do...

    It depends on which word processor you choose. Do you have the ACE 80 Z80 card installed in your 1200? If you do, I'd recommend using Wordstar as the word processor software. The reason is that...
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    Wow, looks like someone woke up on the wrong side...

    Wow, looks like someone woke up on the wrong side of the rock.
  13. Replies
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    718

    Number of things in this thread I may be reading...

    Number of things in this thread I may be reading incorrectly ....

    The idea that only the MM5740 will work in a II/II Plus is not accurate unless there's some context added to the statement. The...
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    I saw your earlier posts of your keyboard...

    I saw your earlier posts of your keyboard project. The mounting holes are just the beginning of your problems. If you study any Apple II/+/IIe keyboard, the keyboard is mounted to the case at a...
  15. Thread: Strange Cable

    by groink
    Replies
    5
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    885

    I see these kinds of responses all the time!!...

    I see these kinds of responses all the time!! When someone posts a "doesn't work" post, you get ten guys posting "works for me!" as if that is solving the original poster's problem.
  16. No. No, I didn't. :)

    No. No, I didn't. :)
  17. Awhile back, someone reverse-engineered this very...

    Awhile back, someone reverse-engineered this very card. The 40-pin chip on the card is actually a microprocessor - a 6502 just like the Apple II. As some have already mentioned, this card merely...
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    My logic is that why collect a version of a...

    My logic is that why collect a version of a product that is buggy? This is the equivalent of collecting factory-defective baseball cards, or dollar bills that were not cut correctly. The Rev 0 is...
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    If someone wants that early adopter feeling, why...

    If someone wants that early adopter feeling, why can't they just buy one of those Willegal clone Rev 0 logic boards? In fact, what I would do is buy a more recent logic board, like maybe a Rev 4, and...
  20. There was also the ITT 2020, which was...

    There was also the ITT 2020, which was essentially an Apple II computer.

    https://en.wikipedia.org/wiki/ITT_2020
  21. Replies
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    Doesn't look like the CPU is even running. Any...

    Doesn't look like the CPU is even running. Any way of checking to see if the 6502 is ticking? Does it react when hitting the reset button? Do you have a logic probe that can check if the CPU is...
  22. Extremely rare component for sale - 80-column card "supplement"

    https://www.ebay.com/itm/Original-Vintage-Apple-II-1982-EXTENDED-80-Column-Text-Card-Supplement/273963609838

    Extremely rare "supplement" for the Apple 80-column card. When this supplement is...
  23. Thanks for the heads-up! He does have the base...

    Thanks for the heads-up! He does have the base plate - it is in the same sale as the case/cover. The seller's base plate is much newer than mine. I'm going to pass on this one! But it will give me an...
  24. Yeah, getting a B&H case is near to impossible....

    Yeah, getting a B&H case is near to impossible. I'll more than likely sell off the power supply and bottom, and let someone else put a system together.
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    Finally found an explanation of the S2 switch. I...

    Finally found an explanation of the S2 switch. I found it in the book "Apple II Circuit Description," page 93. Too much typing to repeat here. It basically says that with the AY-5-3600-931-B6...
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