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collapseos/blk/381

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xcomp: add XCOMPILE and X[COMPILE] This allows us to move words like ABORT" to xcomp-core, which is I think the last roadblock before being able to unify all drivers into a single xcomp layer.
2020-05-13 11:08:18 +10:00
: EMIT
( 0x53==(emit) override )
Add word ?DUP
2020-05-23 03:48:30 +10:00
0x53 RAM+ @ ?DUP IF EXECUTE ELSE (emit) THEN ;
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.
2020-05-26 10:34:52 +10:00
: (print) C@+ ( a len ) 0 DO C@+ EMIT LOOP DROP ;
Move a bunch of words from XPACKed core to xcomp core
2020-05-14 21:58:55 +10:00
: BS 8 EMIT ; : LF 10 EMIT ; : CR 13 EMIT ;
: CRLF CR LF ; : SPC 32 EMIT ;
Add word ?DUP
2020-05-23 03:48:30 +10:00
: NL 0x0a RAM+ @ ( NLPTR ) ?DUP IF EXECUTE ELSE CRLF THEN ;
Add word ERR
2020-05-15 01:57:26 +10:00
: (uflw) LIT" stack underflow" ERR ;
Refer to BOOT and (uflw) by addr in stable ABI Was previously referred to by name+find, which was wasteful.
2020-06-22 01:41:10 +10:00
XCURRENT @ _xapply ORG @ 0x06 ( stable ABI uflw ) + !
cvm: implement stack overflow error condition
2020-08-08 11:57:25 +10:00
: (oflw) LIT" stack overflow" ERR ;
XCURRENT @ _xapply ORG @ 0x13 ( stable ABI oflw ) + !
Add word ERR
2020-05-15 01:57:26 +10:00
: (wnf) (print) SPC LIT" word not found" ERR ;