collapseos/blk/399

: LIT< WORD 34 , DUP C@ 1+ MOVE, ; IMMEDIATE
: BEGIN H@ ; IMMEDIATE
: AGAIN COMPILE (br) H@ - _bchk , ; IMMEDIATE
: UNTIL COMPILE (?br) H@ - _bchk , ; IMMEDIATE
: [ INTERPRET ; IMMEDIATE
: ] R> DROP ;
: LITA 36 , , ;
: COMPILE ' LITA ['] , , ; IMMEDIATE
: [COMPILE] ' , ; IMMEDIATE
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			`: LIT< WORD 34 , DUP C@ 1+ MOVE, ; IMMEDIATE`
Move Cross-compiled core from B390 to B350 and renamed it "Core words". Also, reworded the presentation. 2020-05-16 12:44:49 +10:00			`: BEGIN H@ ; IMMEDIATE`
Limit ourselves to 8-bit branching I'm planning on going back to 8-bit branching. 16-bit br cells incur a non-negligible penalty and, while at first 64 words (128 bytes forward or backward) seemed a bit limiting, I now don't see why one would ever construct such a big branch. It would be un-forthy. Also, I looked at using BC instead of IY to hold IP and the transition would be a lot easier with 8-bit branching. In this commit, all I do is add overflow checks in IF. The mechanic below doesn't change. I'll give myself some time to think it over so that I avoid yet another back and forth. 2020-05-25 00:01:46 +10:00			`: AGAIN COMPILE (br) H@ - _bchk , ; IMMEDIATE`
			`: UNTIL COMPILE (?br) H@ - _bchk , ; IMMEDIATE`
Move Cross-compiled core from B390 to B350 and renamed it "Core words". Also, reworded the presentation. 2020-05-16 12:44:49 +10:00			`: [ INTERPRET ; IMMEDIATE`
			`: ] R> DROP ;`
			`: LITA 36 , , ;`
			`: COMPILE ' LITA ['] , , ; IMMEDIATE`
			`: [COMPILE] ' , ; IMMEDIATE`