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Apple II 68K card

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    Apple II 68K card

    I think this is more just a very cool link but while I was researching some info on the MC68000 I remembered Applefreak had its 8-bit cousin on some funky Apple II card.

    Googling found this super cool link:
    http://www.harrowalsh.de/Elektronik/...008pageGer.htm





    Well this is kind of cool. It's a Build It Yourself version of the 68008 coprocessor card for the Apple II, complete with schematics, parts list and trace layouts.
    Was there much that was actually made that could use a 68008 on an Apple II or was it a code-it-yourself deal?
    [Need something to waste time on? Click here to visit my YouTube channel CelGenStudios]
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    [No time for videos? Click here to visit my Twitter feed @CelGenStudios]

    = Excellent space heater

    #2
    I don't think so--and the 68008 was a real dog on performance, more so on the Apple II bus. I'm not aware of any commercial software written for this gizmo. Less than 64K of memory (uses Apple II memory)--and probably relies on the 6502 for most of the I/O (floppy, certainly).

    To put a fine point on it, consider the average length of a 68K instruction vs. the length of the average 6502 instruction.

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      #3
      So then I guess it was kind of a kludge to make it work.
      [Need something to waste time on? Click here to visit my YouTube channel CelGenStudios]
      --------------------------------------------------------------------------------------------
      [No time for videos? Click here to visit my Twitter feed @CelGenStudios]

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        #4
        I suppose. One could have just as easily put an 8088 on the same board. But then, what would you do with it?

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          #5
          BuMP.

          For the hell of it I went over the board layout and reformatted it so that you could directly print it to a transparency sheet or whatever you desire should you not want to hassle with CAD. Annoyingly it seems I can't attach the original and uncompressed PNG to this post.
          Attached Files
          Last edited by NeXT; August 24, 2013, 09:16 AM.
          [Need something to waste time on? Click here to visit my YouTube channel CelGenStudios]
          --------------------------------------------------------------------------------------------
          [No time for videos? Click here to visit my Twitter feed @CelGenStudios]

          = Excellent space heater

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            #6
            Originally posted by Chuck(G) View Post
            I suppose. One could have just as easily put an 8088 on the same board. But then, what would you do with it?
            Applied Engineering put a NEC V30 on an Apple II card with up to 768k of RAM to run PC software.



            Apple used cards with 68000s inserted in Apple IIs early on to develop the Lisa.

            This wasn't the only 68k card either.

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