Parallel-port Flasher for Elektor Flash Micro board

Most students participating in microcontroller programming courses bring their own notebook PCs and run into problems when they discover there’s no RS232 port available to use with, for example, Flashbot Roadster. Attempts to flash the Elektor 89S8252 Flash Micro board using the AtmelIISP utility and several USB-to-RS232 converters only proved that data was terribly slow to get transferred.