Dos-based opensource VZ10M editor an RAM Card mods on Github
2019-06-24 by tobiasjvandyk@...
About 20 years ago I wrote an MSDOS/Pascal based VZ10M editor - it is probably impractical to run it on a modern PC but feel free to browse through the source code
There are also some details of a more recent 4Mb RAM card mod which I have placed internally in the VZ10m - an Alliance Memory AS6C4008 55PCN SRAM Memory 4Mbit Static RAM chip was added to the Casio VZ10m