Sony HBM-64
This page was last modified 02:29, 18 January 2021 by Mars2000you. Based on work by Rderooy and Gdx.



The cartridge HBM-64 is an expansion of 64kB RAM made and sold by Sony in 1983.

This cartridge is useful mainly to upgrade an MSX1. Actually it is better to buy a Memory Mapper cartridge that initializes its pages itself at startup.


Sony HBM-64 box
Sony HBM-64 cartridge
Sony HBM-64 cartridge

Minimum System Requirements

  • MSX1 computer, one free slot cartridge