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17 lines
704 B
Plaintext
17 lines
704 B
Plaintext
Interpreter I/O
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The INTERPRET loop, the heart of Collapse OS, feeds itself
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from the C< word, which yields a character every time it is
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called. If no character is available to interpret, it blocks.
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During normal operations, C< is simply a buffered layer over
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KEY, which has the same behavior (but unbuffered). Before
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yielding any character, the C< routine fetches a whole line
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from KEY, puts it in a buffer, then yields the buffered line,
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one character at a time.
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Both C< and KEY can be overridden by setting an alternate
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routine at the proper RAM offset (see B80). For example, C<
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overrides are used during LOAD so that input comes from
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disk blocks instead of keyboard. (cont.)
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