Yamaha YIS-603
This page was last modified 02:38, 21 May 2021 by Gdx. Based on work by Mars2000you and Rderooy and others.

Contents

Description

The Yamaha CX5, CX5F, CX5M, CX5MII and CX5MII/128 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 MSX1 computers and can be used as such.

The YIS-603 is the same computer as the YIS-503II, but it features an 'international' keyboard.

Brand Yamaha
Model YIS-603
Year 1985
Region Europe
Launch price
RAM 64kB (in slot 3-2)
VRAM 16kB
Media MSX cartridges, side slot modules
Video Yamaha V9938 (MSX2 VDP!)
Audio PSG (YM2149 integrated in MSX-Engine S3527)
Chipset Yamaha S3527
Keyboard layout QWERTY
Extras Internal RAM / VRAM expandable, 60 pins connector, mini slot
Emulation ROM dump needed. See this thread for details

Pictures

Yamaha YIS-603
Yamaha YIS-603 underside
Yamaha YIS-603 detail of PCB
Yamaha YIS-603 label

Specifications

The YIS-603 is a MSX1 with a Z80A from Sharp (LH0080A), a V9938 and an MSX-Engine S3527 from Yamaha.

This computer supports all Yamaha modules. Itl can be easily upgraded internally because RAM and VRAM are each on separate boards with a connector, you just need to change the corresponding board.

The mini slot allows to add software as on the Yamaha CX5MII.

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
64kB
Memory
Mapper
Module
Slot
Page 8000h~BFFFh
Page 4000h~7FFFh Main-ROM
Page 0000h~3FFFh

Connections

Links