Retrocomputing Basic Implementations

Here is a summary of a number of Basic implementations that I have come across and worked with as part of my retrocomputing hobby. Many of these were ported by me or others to different platforms from the ones they were originally written for (for example, single board computers based on the 6502, 6809, Z80, and 68000 microprocessors). These are all found on my github  account.

Name	Developer	Platform	Code size	Comments
Enhanced Basic (68000)	Lee Davison	68000	14K	Full-featured Basic for 68K platform
Tiny Basic for the 68000	Gordon Brandly	68000	4K	Derived from and similar to Palo Alto Tiny Basic.
Enhanced Basic (6502)	Lee Davison	6502	11K	Full-featured Basic for 6502 platform.
Microsoft Basic for 6502	Microsoft	Apple 2, Commodore, KIM-1, OSI, and others	8K	Basic used on several early 6502-based microcomputers.
Tiny Basic for 6502	Tom Pitman	6502	3K	Originally published in Dr. Dobbs Journal.
Apple 1 Basic	Steve Wozniak	6502 (Apple 1)	4K	Basic for the Apple 1, later expanded into Apple 2 Integer Basic.
BBC Basic 2 for Acorn Atom/BBC Computer	Roger Wilson (Acorn Computer)	6502-based Acorn Atom and BBC Computers	16K	Basic for the Acorn Atom and BBC Computers.
Tiny Basic for 6800	Tom Pitman	6800	2K	My version runs on the Heathkit ETA-3400.
Tiny Basic for 6809	Tom Pitman	6809	2K	6809 port of 6800 version.
TSC Micro BASIC PLUS	Technical Systems Consultants	6809	4K	Similar to Tiny Basic.
Sinclair ZX81 Basic	John Grant and Steve Vickers, Nine Tiles Networks and Sinclair Research	Sinclair ZX80/ZX81, Timex 1000	8K	Basic for the Sinclair ZX81 computer.

A List of Cross-Assemblers for Retrocomputing

 In my retrocomputing projects with various processors I have used a number of cross-assemblers to build code. I've had to use several in order to support different processors as well as for compatibility with different software packages. For the most part they are similar, but have their own unique features and quirks.

I put this table together, mostly for my own reference, that others may also find useful. It is by no means a complete list -- just those that I have used.

Name	Author	Source	Supported Processors	Key Features	Comments
as9	Motorola, with changes by Albert van der Horst and others	https://home.hccnet.nl/a.w.m.van.der.horst/m6809.html	6809	macros	100% compatible with Motorola assembler
asl	Alfred Arnold and others	http://john.ccac.rwth-aachen.de:8000/as/	many (over 50)	Macros	I have used with several processors
asm6809	Ciaran Anscomb	https://www.6809.org.uk/asm6809/	6809, 6309	macros	Good choice if 6309 support needed.
cc65	John R. Dunning, Ullrich von Bassewitz, and others	https://www.cc65.org/	6502, 65C02	C compiler, assembler, linker, librarian	Supports several 8-bit computer platforms.
crasm	Leon Bottou	https://github.com/colinbourassa/crasm	6800, 6801, 6803, 6502, 65C02, Z80	macros	Included in most Linux distributions.
gcc	Richard Stallman and others	https://gcc.gnu.org/git/	Many	Compilers and assemblers	I used for 68000. Included in most Linux distributions.
lwasm	William Astle and others	http://lwtools.projects.l-w.ca/	6809, 6309	Cross-assembler and linker.	macros
vasmm68k_mot	Volker Barthelmann	http://sun.hasenbraten.de/vasm/	Many	Cross-assembler	I used for 68000.
z80asm	Bas Wijnen	http://savannah.nongnu.org/projects/z80asm	Z80	Z80 cross-assembler	Included in most Linux distributions.