All images' extension DSK and PO are RAW data for all emulators. Do all emulators read all images into memory BEFORE they are prenibbled into 342 bytes as 6-2 encoded? By the way, all emulators can access to C600 routines and then postnibbled into 256 bytes as 8-0 decoded. Is it correct? -- Yours Truly, Bryan Parkoff BParkoff@satx.rr.com