Why a Neo Geo port of Doom is functionally impossible
Summary
The Neo Geo game console from the early 1990s cannot run the game Doom because of its hardware design. Its system is built only for 2D sprite graphics and lacks the methods needed to display the more complex 3D graphics that Doom requires.Key Facts
- Neo Geo uses a Motorola 68000 CPU, the same as the Commodore Amiga which could run Doom ports.
- The console is made to handle 2D sprites stored on cartridges, not full 3D graphics.
- Its character ROM cannot be directly accessed by the CPU to render textures or modify sprites.
- Neo Geo does not have bitmap graphics modes or frame buffers to freely draw pixels on screen.
- A simple raycasting demo similar to Wolfenstein 3D works on Neo Geo but is slow and lacks detailed game elements.
- Running Doom on Neo Geo would require extra hardware inside the game cartridge.
- Without this extra processing chip, Doom ports on Neo Geo are unlikely.
- This limitation does not make Doom completely impossible, but it is very difficult and impractical with the console’s original hardware.
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