ptero, вот на ресурсе msx.org есть статья по вопросам совместимости. Включая нюансы Daewoo.
http://www.msx.org/wiki/Compatibility_testing
If your software uses the CHPUT routine, always test it on a Daewoo CPC-300 and a Yamaha_AX350II. If it uses other hooks, be sure to test it by capturing those hooks with another software beforehand.