Yamaha CX5MII
This page was last modified 00:44, 7 December 2017 by Gdx. Based on work by Rderooy and Marce and others.

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 MSX1 computers and can be used as such.

The CX-5MII is a CX-11 localised for the international market, but with more RAM and an additionnal ROM allowing to use the 80 column text mode. The keyboard has generally a QWERTY layout (with or without £ key), but the version for France has an AZERTY layout.

This computer was sold with a FM module SFG-05 plugged into side slot. From BASIC, the synthesizer can be launched with CALL MUSIC or _MUSIC.

It has also a mini cartridge YRM-502 FM Voicing Program II plugged into mini slot. From BASIC, this sound editor can be started with CALL FMV or _FMV. Contrary to the first version of this software, only available as cartridge (YRM-102), this second version has support for loading from/saving to disk.

When you are in the sound editor, you can go to the synthesizer by entering MU. To go back to the FM Voicing Program, you need to press ESC in the synthesizer firmware.

Brand Yamaha
Type CX-5MII or CX-5MII/128
Year 1985
RAM 64kB (CX-5MII) or 128kB (CX-5MII/128)
VRAM 16kB
Media MSX cartridges, side slot modules
Video Yamaha V9938 (MSX2 VDP!)
Audio PSG (YM2149 integrated in MSX-Engine S3527), SFG-05, MIDI
Chipset Yamaha S3527
Extras Internal RAM / VRAM expandable, FM module SFG-05, YRM-502 FM Voicing Program II, mini cartridge port, 60 pin module port

Pictures

Computer

Yamaha CX5MII
Yamaha CX5MII French
Yamaha CX5MII-128
Yamaha CX5MII left side
Yamaha CX5MII back
Yamaha CX5MII right side

SFG-05

SFG-05 Polyphonic mode (F2)
SFG-05 Monophonic mode (F1)
SFG-05 Voice menu (F3)
SFG-05 Load/Save menu (F4)

YRM-502

YRM-502
YRM-502 Command menu
YRM-502 Edit mode (F1)
YRM-502 Directory (DI)
YRM-502 Edit key list (F5)
YRM-502 Command key list (F5)
YRM-502 Load/Save menu (TR)
YRM-502 Common key list (F5)

Specifications

The CX5MII is a MSX1 with a Z80A from Sharp (LH0080A), a V9938 and an MSX-Engine S3527 from Yamaha. The CX5MII is available in two models. One with 64kB RAM and one with 128kB RAM. The only MSX1 with more than 64kB!

This model can be easily upgraded internally (except the CX5MIIG and CX5MIIS versions, respectively for the German and Scandinavian markets), because RAM and VRAM are each on separate boards with a connector, you just need to change the corresponding board.

Some machines don't have a separate VRAM board but you can change the VRAM on the mainboard.

The mini slot allows to add software.

Connections

  • RGB output (not present on CX5MIIC, CX5MIIG, CX5MIIS and CX5MIIU)
  • RF output (except on French model)
  • Analog sound & Composite video
  • Tape recorder connector
  • Centronics compatible Parallel port for a printer
  • 2 general connectors (joysticks, mouse, paddle controllers, ...)
  • 2 cartridge slots
  • 1 module slot (left side, 60 pin connector)
  • 1 mini cartridge slot

Models

  • CX5MIIA: Australian and New Zealand's market (RF = PAL-B on VHF 3/4ch)
  • CX5MIIB: Italian market (RF = PAL-G on UHF 36ch)
  • CX5MIIC: Canadian market (RF= NTSC on VHF 3/4ch)
  • CX5MIIE: United Kingdom's market (RF = PAL-I on UHF 36ch)
  • CX5MIIF: French market (only RGB output)
  • CX5MIIG: German market (RF = PAL-G on UHF 36ch)
  • CX5MIIP: Spanish market (RF = PAL-G on UHF 36ch)
  • CX5MIIS: Scandinavian market (RF = PAL-G on UHF 36ch)
  • CX5MIIU: United States market (RF = NTSC on VHF 3/4ch)

See also