Anyone with a working ABC802?

6 posts in thread

• H. Peter Anvin · Msg 1594 · inlagg

  2018-09-11 22:10

  Ärende: Anyone with a working ABC802?

  Writing in English because there have been some posts from non-Scandinavians lately, and this might be relevant... Is there anyone here with a working ABC802 (or working simulator) who could run a program for me to dump some data? Thanks, -hpa -- Sent from my Android device with K-9 Mail. Please excuse my brevity.
  • juhasz · Msg 1595 · kommentar

    2018-09-12 12:48

    Ärende: Anyone with a working ABC802?

    Yes indeed, and with an Abc-bus connected! ;) interesting to know what you want to dump thst is not already covered by existing rom dimps etc.... Robert ---- hpa at zytor.com skrev ----
    • H. Peter Anvin · Msg 1597 · kommentar

      2018-09-12 18:09

      Ärende: Anyone with a working ABC802?

      Could you please dump this as a .bac file: 1 INTEGER 2 WIDTH 40. 3 WIDTH 80 ABC-bladet seems to indicate that ABC806 uses a weird internal encoding (a double escape) for "WIDTH" and "ATTRIBUTE", but it also says "ABC806 only". I know ABC802 has WIDTH, so I'm wondering what its encoding is. Trying to improve the BASIC-II support for abc80sim. At some point I'll probably add the necessary I/O changes to simulate an ABC802 entirely. I would love to find a circuit diagram and ROM dump from an ABC800C some time, but since ABC802 was the main ABC800 I used "back in my day" it is the most interesting to me - and of course it is pretty trivial to add color or even HR-graphics to the 802 design. -hpa
      • juhasz · Msg 1599 · kommentar

        2018-09-12 19:52

        Ärende: Anyone with a working ABC802?

        2018-09-12 20:09 skrev H. Peter Anvin: Integeresting... ;) I entered the program exactly as written on my 802 (with the dot after width40.) and saved it to w40dot.bac. If the dot was a typo I also entered it without the dot, see w40.bac. They can be found here: https://www.abc.se/~juhasz/w40/ Regards Robert
        • H. Peter Anvin · Msg 1600 · kommentar

          2018-09-12 21:41

          Ärende: Anyone with a working ABC802?

          Nope, the dot was intentional (creates a floating point number while in INTEGER mode). :) -- Sent from my Android device with K-9 Mail. Please excuse my brevity.
        • H. Peter Anvin · Msg 1601 · kommentar

          2018-09-14 02:25

          Ärende: Anyone with a working ABC802?

          Så det ser ut som internkoden faktiskt är tre bytes: XSTM 249 0 Den andra detaljen är att om man ger den ett flyttal innehåller internkoden en explicit konvertering till heltal (bytekod 129). Jag undrar verkligen hur XSTM 249 kan funka i tolken... -hpa