[Coco] Tandy Color Computer 3 RND Function
jejones3141 at gmail.com
Sat Mar 28 19:35:56 EDT 2020
On Sat, Mar 28, 2020 at 3:09 PM Allen Huffman <alsplace at pobox.com> wrote:
> I wish it were a joke! When I was going through the Extended Color BASIC
> unravelled disassembly, I noticed something. The parser will grab a
> character, then decided what to do with it. Certain things will then be
> followed by a check for a modifier.
> A modifier is what comes after, like V for volume will have a number after
> it. O for octave will have a number after it.
> For notes of A-F, it checks for a “#” or “+” to make it a sharp, or “-“ to
> make it a flat. I noticed that the way it did it, it allowed to sharp and
> flat anything, even though on a piano those notes don’t exist.
> Actually, they do. E♯ is F, B♯ is C (and similarly, F♭ is E and C♭ is B.
They're called "enharmonic", and in the engineering solution of equal
temperament, they are the same. (Lest I get out of my depth, that's all
I'll say about temperament.) If they didn't exist, the circle of fifths
would be broken and there'd be keys you couldn't notate.
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