4 Commits

Author	SHA1	Message	Date
Virgil Dupras	03e529b762	forth: simplify execution model and handle literals better ... This scheme of "when we handle line-by-line, compile one word at a time then execute" so that we could allow words like "CREATE" to call "readword" before continuing was a bad scheme. It made things like branching outside of a colon definition impossible. This commit implement a new "litWord". When an undefined word is encountered at compile time, it is included as-is in a string literal word. It is at run time that we decide what to do with it.	2020-03-09 14:14:26 -04:00
Virgil Dupras	989d8bbabf	forth: add "DOES>" and "CONSTANT"	2020-03-07 22:18:14 -05:00
Virgil Dupras	f0cf10ab7c	forth: Check for PS underflow	2020-03-07 20:20:11 -05:00
Virgil Dupras	49228e418c	apps/forth: new (WIP) application	2020-03-07 12:13:15 -05:00