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  • APU
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  1. Systems
  2. Sega Genesis

Genesis Architecture

by Brad Corrupts

PreviousCorrupting the Sega GenesisNextGenesis Memory Domains

Last updated 1 year ago

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CPU

The Sega Genesis uses a as its main processor.

(Good reference for creating instruction lists)

(Good reference for hacking machine code by hand)

APU

The Sega Genesis uses a as a coprocessor, mainly for driving the and .

(Good reference for creating instruction lists)

GPU

The Sega Genesis uses a proprietary Yamaha YM7101 Visual Display Processor (VDP).

(See section II)

Genesis Architecture, a Practical Analysis
Genesis memory map
Genesis ROM Header, including vector tables
Motorola 68000
M68000 Microprocessor User's Manual
Motorola 68000 CPU Opcode Table
68000 ASM-to-Hex Code Reference
Zilog Z80
Yamaha YM2612
Texas Instruments SN76489
Genesis Z80 memory map (among other technical information)
Z80 Microprocessor User's Manual
Z80 Opcode Tables
Yamaha YM2612 technical documentation
Texas Instruments SN76489 technical documentation
Sega Genesis Software Manual