Olympia PHC-28
This page was last modified 20:18, 17 January 2021 by Mars2000you. Based on work by Rderooy and Gdx.



The Olympia PHC-28 was aimed at the French market. It's the same machine as the Sanyo PHC-28S, but with an AZERTY keyboard. This model is based on the Sanyo MPC-5.

Contrary to the Japanese machine, this computer has an expansion bus slot: it can be used as third cartridge slot with an adapter, but was also initially conceived for the MEB-01 slot expander, connected to the MPC-X, a Graphic Expander Unit which adds MSX2 palette, high-resolution, superimposing, still function and zooming and uses lightpen. Note however that Sanyo has never released the MPC-X in Europe.

Brand Olympia (Manufacturer: Sanyo)
Model PHC-28
Year 1984
Region France
Launch price
RAM 16kB in slot 0
Media MSX cartridges
Video Texas Instruments TMS9929ANL
Audio PSG (AY-3-8910)
Chipset none (separate IC's)
Keyboard layout AZERTY
Extras Reset button
Emulation ROM dump needed. See this thread for details


THe PHC-28 is a MSX1 with a Z80A from Sharp (LH0080A). It was often proposed with a RAM extension of 16kB or 48kB.

Compared to the model MPC-5, a printer port and an expansion bus have been added, the RF output has been replaced by a RGB output.

Slot Map

Slot 0 Slot 1 Slot 2 Slot 3
Page C000h~FFFFh RAM Cartridge
Slot 1
Slot 2
Page 8000h~BFFFh
Page 4000h~7FFFh Main-ROM
Page 0000h~3FFFh