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Assembler#

Given the extremely slow performance of Atari Basic, the go-to language for programmers writing games or other speed-critical programs was assembler. Shepardson Microsystems used a cross-compiler to write BASIC, but at the same time began development of their own assembler which was later released as the Atari Assembler Editor in ROM cartridge format. Assembler/Editor lacked many features, and was only suitable for small programs, so Atari also released the disk-based high-end Atari Macro Assembler. Macro Assembler was glacially slow, and there was a thriving market for 3rd party assemblers and debuggers to fix the problems seen in one or the other.

Overview#

• 6502 OpCodes.xlsx ; Excel table with all opcodes and comparision between different Assemblers

Assembler for Atari Computers#

• Atari Assembler Editor
• Atari Macro Assembler and Program-Text Editor CX8121
• AMOEBA
• EASMD
• MAC/65
• BUG/65
• Dunion's Debugging Tool (DDT)
• Extended Dunion's Debugging Tool (ExDDT)
• Synapse Assembler
• Atmas I
• Atmas II
• Edit 6502
• Bibo Assembler
• 130XE+ Makroassembler V2.1 mit MyDOS 4.50 (1991)
• A65 Assembler
• MAE Assembler
• Alfasm

Cross-Assembler#

• ATASM ; Mac/65 compatible cross assembler
• MADS ; powerful and modern cross assembler under constant development
• XASM ; xasm is a 6502 cross-assembler with some syntax extensions. By default it generates binaries for Atari 8-bit computers.
• APX-20051 Cosmatic Atari Development Package ; cross-assembler for 1802 assembly language

Development IDE#

• WUDSN IDE ; smartest development environment available

Books#

• The Atari Assembler ; detailed and easy-to-read introduction to programming 6502-assembly on the Atari using Assembler/Editor.