This repository contains F83, a public domain implementation of FORTH-83 version 2.0 by Henry Laxen and Mike Perry for
- CP/M-80 in directory
F83V2-80 - CP/M 68000 in directory
F83V2-68 - MSDOS: in directory
F83V2-MS
F83 is a model implementation of the (now outdated) Forth-83 standard. For your convenience you can find a copy of the Forth-83 standard document in the Standard directory.
The distributions also also contain source code in Forth block files (*.BLK, 1KB screens with 16 lines by 64 characters, no line breaks). You can best inspect these files from within a running F83 system.
The original Laxen/Perry distribution had these files squeezed with a program
that took hours (!) to run to unsqueeze at that time. See HUFFMAN.BLK and EXPAND.BLK for details.
For further documentation please see the README files in the particular directories.
F83 is self contained and can regenerate itself without using other tools as it includes assemblers for the target processors (8080, 8086 and 68000) and its own meta compiler.
Sample regeneration run (here 68K version):
C>f83 meta68.blk
68000 Forth 83 Model
Version 2.1.0
Modified 03Jun84
ok
OK ( your input )
3
4
...
21
Meta Compiler Loaded
1
2
3
...
91
92
Unresolved references:
Statistics:
Last Host Address: 9596
First Target Code Address: AD00
Last Target Code Address: DC14
Now return to CP/M and type:
KERNEL EXTEND68.BLK <CR>
OK <CR> ok
BYE ( your input )
150 Pages
C> kernel extend68.blk
OK ( your input )
Loading system extensions.
File Interface Loaded
MultiTasker Low Level Loaded
Machine Dependent IO Words Loaded
68000 Machine Dependent Code Loaded
Strings Loaded
Editor Loaded
Dumping Utility Loaded
Decompiler Loaded
Print Utility Loaded
Debugger Hi Level Loaded
MultiTasker Hi Level Loaded
Standard System Loaded
System has been loaded, Size = 28880
System saved as F83.68K ok