collapseos/blk/392
Virgil Dupras 2d17b4e8ec Make string length-prefixed instead of null-terminated
I'm not sure why I chose null-terminated initially. Probably because
the z80asm version had null-terminated strings.

Length-prefixes strings are the traditional form of strings in Forth
and it's a bit easier to work with them with traditional forth words
when they're under this form.
2020-05-25 20:34:52 -04:00

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: INTERPRET
BEGIN
WORD DUP @ 0x0401 = ( EOT ) IF DROP EXIT THEN
FIND NOT IF (parse) ELSE EXECUTE THEN
C<? NOT IF SPC LIT< ok (print) NL THEN
AGAIN ;
( Read from BOOT C< PTR and inc it. )
: (boot<)
( 2e == BOOT C< PTR )
0x2e ( BOOT C< PTR ) RAM+ @ DUP C@ ( a c )
SWAP 1 + 0x2e RAM+ ! ( c ) ;
( pre-comment for tight LOAD: The 0x08==I check after INTERPRET
is to check whether we're restoring to "_", the word above.
if yes, then we're in a nested load. Also, the 1 in 0x06 is
to avoid tons of "ok" displays. )