{
  "added_at": "2026-11-10",
  "category": "reconstruction-cases",
  "class": "game",
  "description_en": "Atari's 1977 VCS game Surround is disassembled into labeled and commented 6502 assembly that compiles to the exact 2K ROM image. The listing names the zero-page variables, the game-variation flags for speed-up, wraparound, erase, diagonal movement and single-player play, the joystick and switch masks, and the score and playfield drawing routines, with a compile switch for NTSC or PAL builds.",
  "description_zh": "Atari 1977 年的 VCS 游戏 Surround 被反汇编为带标签和注释的 6502 汇编，可编译出与原版完全一致的 2K ROM 镜像。代码为零页变量、加速、穿墙、擦除、斜向移动和单人模式等游戏变体标志、摇杆与开关掩码以及分数和 playfield 绘制例程命名，并提供 NTSC 与 PAL 编译开关。",
  "entry_url": "https://awesomerea.org/resources/surround-atari-vcs-disassembly-case/",
  "entry_url_zh": "https://awesomerea.org/zh/resources/surround-atari-vcs-disassembly-case/",
  "evidence_class": 3,
  "evidence_status": "observed",
  "evidence_url": "https://web.archive.org/web/20260213080708/https://www.qotile.net/minidig/disassembly/surround.asm",
  "group": "cases",
  "id": "surround-atari-vcs-disassembly-case",
  "json_url": "https://awesomerea.org/resources/surround-atari-vcs-disassembly-case/record.json",
  "kind": "case-study",
  "markdown_url": "https://awesomerea.org/resources/surround-atari-vcs-disassembly-case/index.md",
  "markdown_url_zh": "https://awesomerea.org/zh/resources/surround-atari-vcs-disassembly-case/index.md",
  "name": "Surround: an annotated Atari VCS disassembly that compiles to the exact 2K ROM",
  "name_zh": "Surround：可编译出原版 2K ROM 的 Atari VCS 注释反汇编",
  "reconstruction_method": "matching-decompilation",
  "record_type": "resource",
  "relationship": "independent-reconstruction",
  "requirement_facets": [
    "prerequisites",
    "license"
  ],
  "requirements": [
    "Assembling needs a 6502 assembler and vcs.h version 105 or later.",
    "No licence stated on the project page."
  ],
  "requirements_zh": [
    "汇编需要 6502 汇编器以及 105 或更新版本的 vcs.h。",
    "项目页面未声明许可证。"
  ],
  "scope": "notes",
  "targets": [
    "game"
  ],
  "url": "https://www.qotile.net/minidig/disassembly/surround.asm",
  "verification": "source-reviewed",
  "verified_at": "2026-11-09"
}