Case study

A-Team: an Atari 2600 disassembly with PAL conversion

A two-bank 6502 disassembly of A-Team for the Atari 2600 assembles with DASM and doubles as the basis for a PAL conversion. Compile switches pick NTSC, PAL 50 Hz or PAL60 colors and timing, and toggle the intro logo and intro glitch fixes, the level-1 border color cycling and a bug fix that keeps the scanline count fixed, each with the original behaviour available. Comments mark the color register writes for backgrounds, characters, missiles, the score panel and the intro screen.

Targets: Game
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-09

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Requirements & limits

Prerequisites: DASM and the vcs.h header that the listing includes.
Scope: COMPILE_VERSION selects PAL, PAL60 or NTSC; FIX_LOGO, FIX_INTRO, COLOR_CYCLE and BUGFIX switch between the original behaviour and the fixes.
Testing evidence: The color conversion history notes that it needs more real-hardware testing.
License: No licence stated on the project page.

Cite

BibTeX

@misc{a-team-atari-2600-disassembly-case,
  title = {{A-Team: an Atari 2600 disassembly with PAL conversion}},
  howpublished = {\url{https://www.qotile.net/minidig/disassembly/a-team.asm}},
  url = {https://www.qotile.net/minidig/disassembly/a-team.asm},
  urldate = {2026-11-09},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/a-team-atari-2600-disassembly-case/}}
}

Plain text

A-Team: an Atari 2600 disassembly with PAL conversion. https://www.qotile.net/minidig/disassembly/a-team.asm (accessed 2026-11-09). Awesome REA entry: https://awesomerea.org/resources/a-team-atari-2600-disassembly-case/

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