My Apple ][+ had a tape interface. It mostly worked - if the tape stretched or if the tape speed changed for some reason (dirty capstan, power supply fluctuatio

My Apple ][+ had a tape interface. It mostly worked - if the tape stretched or if the tape speed changed for some reason (dirty capstan, power supply fluctuations, low volume, high volume, evil pixies) then you wouldn't be able to read it back. This site describes the format, which was basically a header tone, a sync tone, data bits, and then a checksum (not described there but other sites say it was just an XOR). When we got a Disk ][ (5-1/4" floppy drive) all those issues went away. http://www.applevault.com/hardware/apple/apple2/apple2cassette.html http://www.applevault.com/hardware/apple/apple2/apple2casset...