This is the reverse engineering of the REX Datentechnik 9628 Extern Kernal 8 for the Commodore C64. The components date back to 1988. So does the design.REX-9628-Extern-Kernal-8AuthorSven Petersen Link to projecthttps://github.com/svenpetersen1965/REX-9628-Extern-Kernal-8 Link to similar projecthttps://github.com/DL2DW/REX_9628_Extern_Kernel_8