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  • Mame/Ample questions

    From Kent Dickey@21:1/5 to All on Mon Jun 28 10:25:45 2021
    After the post I made about reading $C010 to see if a key was down
    (and having it pointed out that this only works on Apple //e or later), I thought I'd see what MAME did when it was set to an Apple II+.

    So I ran Ample on my Mac, and after a lot of trouble, I ran:

    10 A = 49152
    20 ? PEEK(A),PEEK(A+16)
    30 GOTO 10
    run

    This just does PEEK($C000),PEEK($C010) over and over.

    And MAME emulates a //e--the peek($C010) shows a key being held down.

    But that's not my main purpose of this post: I could barely enter the
    above program. Again, I'm on a Mac (Big Sur 11.4).

    10 a=49152

    That didn't work. I have a key on my keyboard marked = with + as the
    shifted version. Press that key gave me: -. It turns out pressing
    Shift = (which should give me +) does give me =.

    20 ? peek(

    The ( is a problem. I pressed shift-9 on my keyboard (which is the key on
    my keyboard with the ( above it), and I got ")". To get (, I have to press shift-8 (which my keyboard says should be *).

    But even weirder is +. From the '=' problem before, clearly the =/+ key
    was not going to work. I found + eventually as Shift-; (the key on my
    keyboard is ; with : as the shifted version).

    By now, I'm sure Apple II+ users have realized what's going on.
    These mappings match the actual physical Apple II+ keyboard (which is a weird keyboard).

    But how is this useful for an emulator to do? I tried using the MAME
    key mapper (Delete then Tab, then Input (this machine)), and I cannot see
    how to change what "shift" generates as compared to the non-shifted version.
    So how do I get MAME to give me @ for shift-2 instead of "?

    Kent

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  • From David Schmidt@21:1/5 to Kent Dickey on Mon Jun 28 13:42:26 2021
    On 6/28/21 11:25 AM, Kent Dickey wrote:
    After the post I made about reading $C010 to see if a key was down
    (and having it pointed out that this only works on Apple //e or later), I thought I'd see what MAME did when it was set to an Apple II+.

    So I ran Ample on my Mac, and after a lot of trouble, I ran:
    [...]

    Kelvin Sherlock is active on Slack - I've sent you an invite (to your
    email in the message header) if you'd like to pick up the conversation
    there. Otherwise, I'm sure he'll be by here in due course. :-)

    - David

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