Differences

This shows you the differences between two versions of the page.

--- sd:star_forth [2026/03/12 14:01] – appledog
+++ sd:star_forth [2026/03/12 16:16] (current) – appledog
@@ Line 2: / Line 2: @@
 Starting Forth is available online at [[https://www.forth.com/starting-forth/0-starting-forth/|Starting Forth Online Edition]].
+== Welcome to Star Forth
+SD/FORTH v0.5
+* 32-bit cells, subroutine-threaded
+* Outer interpreter with TIB, word parser, dictionary search, number parsing
+* Stack primitives with underflow protection
+* 17 built-in words: BYE, .S, CR, ., DUP, DROP, SWAP, OVER, +, -, *, /, MOD, EMIT, DEPTH, WORDS, PROMPT
+* Decimal, hex ($), binary (%), explicit decimal (#) number input
+* Negative numbers with - prefix
+* Paste-friendly '> ' stripping
+Next phases when you're ready:
+TODO:
+* : and ; (colon definitions) — this is where FORTH becomes a real language
+* 32-bit number printing (currently . only shows low 16 bits)
+* Control flow — IF/THEN/ELSE, DO/LOOP, BEGIN/UNTIL
+* Memory words — @, !, C@, C!, HERE, ALLOT, ,
+* String I/O — .", TYPE, ACCEPT
+* Save/load dictionary images
 == FIG-FORTH
@@ Line 14: / Line 35: @@
 This list includes implementations for: the 1802, 6502, 6800, 68000, 6809, 8088, 9900, the Alpha Micro, Apple II, Eclipse, IBM-PC, Nova, Pace, the PDP-11, and the VAX.
-The point being proven, FORTH is out there with copious amounts of code in various architectures. It was thus easy to get a kind of FORTH running on the SD-8516. I quickly became obsessed with it.
+The point being proven, FORTH is out there with copious amounts of code in various architectures. It was thus easy to get a kind of FORTH running on the SD-8516. I quickly became obsessed with it. It took quite a while to iron out all the stack bugs.
 == Why