MSX Disk Interface Emulator


A Interface to adapt modern SD Card to the old MSX computers

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This is an open source project that aims to create a MSX cartridge that acts as a old disk drive interface but in fact it will be accesing a modern SD Card. For the MSX it will be as if there is a magnetic disk drive with a real magnetic disk but for real it will be accessing a .dsk file inside a sdcard.

Development tools used are:
- Kicad version 2013-07-07
- Microchip XC8 v1.21 (free mode)
- Micrchip MPLAB X IDE v1.90
- Altera´s Quartus Web Edition 11.0

UPDATE 2014-11-05

Now it is working and the SVN repositories has it all: Schematics, PCB layout, firmware for the CPLD and the firmware for the MCU. But you have to download by your own the firmware for the 49F010 on the internet.

MSX Disk Interface Emulator Web Site


  • It combines the disk interface and a conceptual disk unit in one package. So with just one cartridge and one sdcard you are good to go with your games and apps for msx.
  • It abstracts the old disk interface in a much more effcient manner meaning that disk access is faster with this interface.
  • Now it is completely functional. In the Circuit SVN branch has the Revision B of the main board which is woking fine.


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Additional Project Details


English, Brazilian Portuguese

Intended Audience

Advanced End Users

Programming Language

Assembly, C


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