Yamaha CX7/128
This page was last modified 23:57, 17 January 2021 by Mars2000you. Based on work by Rderooy and Gdx and others.
Yamaha CX7-128.jpg

Contents

Description

The Yamaha computers were specifically targeted at music and sound production, and as such were regarded by many as non-standard MSX machines. However, they are in fact standard MSX computers and can be used as such.

The CX7/128 was aimed at the Japanese market and features a Japanese keyboard. It is almost the same as the CX-7M/128 but was sold without SFG-05 module and without a FM Voicing Program II cartridge (YRM-502) inserted in the mini slot.

Brand Yamaha
Type CX-7/128
Year 1985
Region Japan
Original price ¥99,800
RAM 128kB (in slot 3-2)
VRAM 128kB
Media MSX cartridges, side slot modules
Video Yamaha V9938
Audio PSG (YM2149 integrated in MSX-Engine S3527)
Chipset Yamaha S3527
Keyboard layout QWERTY/JP50on
Extras Mini cartridge port, 60 pin module port
Emulation ROMs dumped and emulated

Pictures

Computer

Yamaha CX-7/128
Yamaha CX-7/128 left side
Yamaha CX-7/128 back
Yamaha CX-7/128 underside
Yamaha CX-7/128 label
Yamaha CX-7/128 box

Specifications

The CX7/128 is a MSX2 with a Z80A from Sharp (LH0080A) and an MSX-Engine S3527 from Yamaha.

This model can be easily upgraded internally because RAM and VRAM are on separate boards with a connector, you just need to change the corresponding board.

The mini slot allows to add software.

Slot Map

Slot 0 Slot 1 Slot 2 Slot 3-0 Slot 3-1 Slot 3-2 Slot 3-3
Page C000h~FFFFh Cartridge
Slot 1
Cartridge
Slot 2

Mini
Cartridge
Slot
128kB
Memory
Mapper
Module
Slot
Page 8000h~BFFFh
Page 4000h~7FFFh Main-ROM
Page 0000h~3FFFh Sub-ROM

Connections

Links