Saverio Russo

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Components

	SST39SF010A-55-4C-NHE-T Microchip Technology	x 1
	SN74HCT08N Texas Instruments	x 1

Description

SC-3000 GAME CART 48K - NOR FLASH 128K PLCC-32

This is a PCB specifically made to generate cartridges for the Sega SC-3000, SG-1000 and I believe also the Sega Mark III and Sega Master System (Japanese). It uses a standard 39SF010 128KB NOR FLASH in PLCC-32 format (only first 48KB are used). The 2x 0.1uF disc capacitors are the standard 25% tolerance 16V (even 25V) one used in almost all electronics of the time. GAME MEMORY MAP is $0000-$BFFF with 1 EPROM. The 74HCT08 AND port IC is used as negative OR to merge the /EXM2 ($0000-$7FFF) and the /EXM1 ($8000-$BFFF) signals.

Apr 12,2025

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SC-3000 GAME CART 48K - NOR FLASH 128K PLCC-32

A Sega SC-3000 / SG-1000 GAME CARTRIDGE using a 128KB NOR FLASH PLCC-32 to have the GAME data in $0000-$BFFF 48KB range.

177

Published: Apr 12,2025

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