--- Grant Stockly <grant at stockly.com> wrote: I don't know anything about the KCACR, but the way the Spectrum and C64 saved data the computer would go by the speed of the tape. Typically, any data would be preceeded by 4 (perhaps less?) seconds of pulses which would allow the computer to work out the speed of the tape. I can only assume other computers used this method too?? Regards, Andrew D. Burton aliensrcooluk at yahoo.co.uk