Sanyo PHC-55FD2
This page was last modified 17:19, 3 November 2021 by Mars2000you. Based on work by Rderooy and Msxholder.



The PHC-55FD2 is a rare computer and looks similar to the MSX2+ PHC-70FD2 with its two built-in disk drives, but it's a MSX2 with 128kB RAM, which is very uncommon for the Sanyo machines.

Another surprising thing is hidden inside the machine as it comes with the Toshiba T9763 MSX-Engine, apparently a prequel of the T9769 engine, that can be found for example in the PHC-70FD2, its big MSX2+ brother.

This computer is normally called Wavy55FD2 in Japan. It was available in black (K) or gray (G). It was not advertised in the various computer magazines, so we can presume that it was reserved for administrations and commercial companies in Japan.

Brand Sanyo
Model PHC-55FD2
Year 1988
Region Japan
Launch price
RAM 128kB (in slot 3-0)
VRAM 128kB
Media MSX cartridges, 2DD floppy disks
Video Yamaha V9938
Audio PSG (AY-3-8910 compatible, integrated in MSX-Engine T9763)
Chipset Toshiba T9763
Keyboard layout QWERTY/JIS + numeric keypad
Extras Two 720kB 3,5" floppy disk drives, reset button
Emulation ROM dump needed. See this thread for details


Sanyo PHC-55FD2
Sanyo PHC-55FD2 label
Toshiba MSX-Engine T9763
Sanyo PHC-55FD2 left side
Sanyo PHC-55FD2 back
Sanyo PHC-55FD2 right side
Sanyo PHC-55FD2 main PCB
Sanyo PHC-55FD2 main PCB (underside)


The Sanyo PHC-55FD2 is an MSX2 powered by a Z80A integrated in the MSX-Engine Toshiba T9763 (prequel to the T9769 used in most MSX2+ and all MSX Turbo R computers).

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
Slot 2
Page 8000h~BFFFh
Page 4000h~7FFFh Main-ROM Disk ROM
Page 0000h~3FFFh Sub-ROM