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SHVC-1A3M-21

A board with one ROM chip, 64k of RAM, and a MAD-1 chip

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:

Game Name Region Serial Code
Keiba Eight Special 2 Japan SHVC-82-0
Dino Dini's Soccer PAL SPAL-ADSP-0
Super Punch-Out!! PAL SPAL-4Q-0
Aerobiz Supersonic USA SNS-AG-0
Air Strike Patrol USA SNS-4A-0
Bassin's Black Bass USA SNS-AB2E-0
Dragon View: Drakkhen 2 USA SNS-ADVE-0
ESPN National Hockey Night USA SNS-AEHE-0
ESPN Speed World USA SNS-ASWE-0
ESPN Sunday Night Football USA SNS-ASNE-0
Ken Griffey Jr. Presents Major League Baseball USA SNS-JR-1
Obitus USA SNS-7B-0
Super Punch-Out!! USA SNS-4Q-0
Ultima VII: The Black Gate USA SNS-7I-0
Uniracers USA SNS-4L-0
Wario's Woods USA SNS-65-0

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