Here starts the development of an "low cost" Centronics-Interface with Z80-PIO and with an simple Game-port-Interface. For the full function of the Game-port we need full IM2-Service in RomWBW because the drive must react on pressing the knobs with INT in IM2.

This PCB is based on the M021 - modul for the former KC85/3 (GDR).