CURSOR and Commodore cassettes

I wrote: I should have added that my next logical step, if I had continued with this project, would have been to wait pass the sync bit. Then time two pulses together and if the first pulse ended BEFORE one half of the length of both pulses then it's a zero bit and if it ended AFTER one half of the length of both pulses then it's a 1. And use the parity bit to check the result. If there is an error then rewind the file back to the last sync bit. I hope that's clear :) and helps, --Doug ==================================================== Doug Coward dcoward(a)pressstart.com (work) Sr. Software Eng. mranalog(a)home.com (home) Press Start Inc. http://www.pressstart.com Sunnyvale,CA Curator Museum of Personal Computing Machinery http://www.best.com/~dcoward/museum/ and the new Analog Computer Museum and History Center http://www.best.com/~dcoward/analog ====================================================