An intelligent microprocessor interface for a low-cast digital magnetic tape recorder

Abstract A direct-digital, compact-cassette, four-track tape recorded has been interfaced to a personal computer with the minimum of components. The functions of data encoding/decoding and synchronisation are implemented in software. Software is also used to reduce the effects of tape velocity/azimuth variation. A recording density of 2.5 k bits/sec per track has been achieved with an error rate of 1 in 105.