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EA-1A3M-30

A PCB manufactured by EA late in the life cycle of the SNES, with a single ROM chip, 64k of RAM, and a MAD-1 decoder.

All PCB information based on a document by Overload

Supported ROM sizes

  • 2 Mbit
  • 4 Mbit
  • 8 Mbit
  • 16 Mbit
  • 32 Mbit

Supported RAM sizes

  • 64k kbit

On-board chips

Chip numberChip type
U1MASKROM
U264k SRAM
U3MAD-1
U4CIC

ROM Registration

A properly formatted internal header should have these values

Memory Address Value Explanation
FFD520H / 30HMap Mode
FFD602HCartridge Type
FFD708H ~ 0CHROM Size
FFD803HRAM Size

Memory Mapping

In order to get a game to work properly on an emulator, the following mapping should be used for this PCB.

Bank Address Usage
00-7F8000-FFFFROM
70-7F0000-7FFFRAM
80-FF8000-FFFFROM (MIRROR)
F0-FF0000-7FFFRAM (MIRROR)

Games that use this PCB type:


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