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- C<? is a flag indicating whether a character is waiting in the
- input stream. 1 means yes, 0 means no. It is the responsibility
- of C<* to update that flag.
-
- WORDBUF is the buffer used by WORD
-
- BOOT C< PTR is used when Forth boots from in-memory
- source. See "Initialization sequence" below.
-
- INTJUMP All RST offsets (well, not *all* at this moment, I
- still have to free those slots...) in boot binaries are made to
- jump to this address. If you use one of those slots for an
- interrupt, write a jump to the appropriate offset in that RAM
- location.
-
- (cont.)
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