MZ-800 expansion card

My first computer was Sharp MZ-821 and I still have it and it is still working. But I used TV as monitor and nowadays it is not so "in" to use TV so I tried to connect MZ-821 to VGA monitor. After some research (learning how CGA output and VGA input works) I developed expansion card for MZ-800. It contains:

VGA output is working well, SD/MMC basic I/O is working well, too. I started working on SD/MMC loader but not finished yet. All essential files for this project can be downloaded here.
Modified: 17.11.2008