Aihuxi.133
net.lang.apl
utzoo!decvax!harpo!zeppo!wheps!eagle!mhtsa!ihnss!ihuxi!otto
Wed Apr 21 20:29:55 1982
ASCII APL CODES
There has been some discussion in this group about ASCII APL terminals.
I have mentioned that in my experience there are only two basic
translation tables needed to support all ASCII APL terminals.  The
following table shows the differences between the two translations.
The codes used with these two terminals types are usually called
Key-pairing or Bit-pairing (just why, I'm not sure).

The following information should allow someone to convert a translation
table from one code to the other, or to make sure that both types of
ASCII APL terminals are supported by a given APL interpreter.

George Otto
Bell Labs, Indian Hill
============================
    
                      ASCII
       APL        KEY       BIT
    ----------  -------   -------
    )           0100010   0101010
    >           0100110   0100111
    ]           0100111   0111010
    or          0101000   0101001
    and         0101001   1011111
    not =       0101010   0101000
    divide      0101011   1111110
    (           0111010   0101011
    times       0111101   1011110
    overbar     1000000   0100010
    left arrow  1011011   1000000
    left tack   1011100   1011011  non-standard character
    right arrow 1011101   1100000
    >=          1011110   0100110
    -           1011111   0111101
    lozenge     1100000   1011100  non-standard character
    {           1111011   1011101  non-standard character
    right tack  1111100   1111011  non-standard character
    $           1111110   1111101  non-standard character

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