Hardware Howto Multimedia Cartridges Music

FM-Pac English translation built-in

In the 90’s I used to have a FM-Pac, to add great sound to my MSX. The built-in menu was Japanese, and since there was no Google Translate, it was pretty useless to me.

FMPAC Japanese Menu








Thanks to MSX Translations there is a patch available to patch the ROM to English. This patch can be applied at runtime, but I used it to patch the original ROM and burn the patched ROM on a new Eprom and place it inside the original FM-Pac.

To accomplish this I removed IC2 from the original FM-Pac and replaced it with a 27C512 Eprom (150nS), with the English Patched Rom.

FMPAC PCB with Original ROM
FMPAC PCB with Patched ROM













I have dumped the original ROM and patched it with the English patch, they are available as download on


FM Pana Amusement Cartridge ROMs (Japanese - English) 49.78 KB 111 downloads

This archive contains the original Japanese ROM and the translated English ROM Japanese...


After replacing the ROM, this is the result:

FMPAC with English Menu
Hardware Howto Music

Philips Music Module Upgrade and Capacitor Replacement

Last MSX Fair in Tilburg I’ve bought the MSX Audio Extension Expander from Bas Kornalijnslijper.

This extension comes with an online build-in instruction that can be downloaded from Supersoniqs Website
The instruction starts with a little background:

Back in 2005 Brazilian MSX users Fábio Ricardo Schmidlin (FRS) and Luciano Sturaro
(MSXPró) released an expander PCB for the Philips Music Module. This board came with
and adjusted Panasonic MSX Audio ROM and with 256KB sample memory. A while ago
FRS published his schematics so other MSX users could recreate his upgrade PCB.
Because nobody took this challenge while there was still demand SuperSoniqs jumped in.
It took us some months to gather all the necessary parts, order the PCB’s and then find a
partner to assemble the upgrade boards. After some setbacks we finally succeeded. We
would like to thank FRS and MSXPró for their great work. They can be reached through Please check our site for news and information about our products.
Our place on the web can be found at We hope you have great fun with
this upgrade!

The upgrade can be done in some easy steps, but since I had to open up my Music Module I decided to also replace all electrolytic capacitors with high-grade audio electrolytic capacitors.
So I started to identify all capacitor values to order them. The following electrolytic capacitors ar used in the Music Module: Value Volt
C41 0.47uF 50V
C13 100uF 16V
C16 100uF 16V
C29 100uF 16V
C30 100uF 16V
C25 10uF 16V
C38 10uF 16V
C39 10uF 16V
C40 10uF 16V
C21 1uF 50V
C33 1uF 50V

I removed all electrolytic capacitors by cutting them out and then cleaned all holes using a desoldering pump.

Then I’ve put all new electrolytic capacitors.

After replacing all electrolytic capacitors I’ve tested the music module to see if it’s still functioning and to listen to the result. The result was not stunning, but the sound was somehow more ‘bright’.



I also replaced R41 with a 20KΩ potentiometer, so the sound output to the slotconnector can be adjusted.

After these modifications I started to build in the MSX Audio Extension Expander using the guide supplied by Supersoniqs.


The result:











Because I have multiple Music Modules with different ROM’s I have dumped them all using my Wellon VP-280 Eprom programmer and added them to the downloads section:


Konmouse 4.3 added to Downloads

After contacted the maker of Konmouse (Ramon van der Winkel) I’ve got permission to add Konmouse to the Downloads section.

Konmouse is a SCC Music player/editor that plays Konami’s music and can be controlled with a mouse.


Konmouse is a SCC Music player/editor that plays Konami's music and can be controlled with a mouse. After contacted the maker of Konmouse (Ramon van der Winkel) I’ve got permission to add Konmouse to...
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Last Updated22 February 2018