Sharp MZ-800 ( MZ 821 ) - goog condition, tested - full works, cabel to tv , tape drive works MZ-800 (1983): The first MZ with a 640×200-pixel graphics mode, a Texas Instruments SN76489 sound chip. The model numbers were similar as with the 700 series: 811, 821, and 831. In some markets like Europe instead of a tape drive the 821 and 831 models had a Quick Disk drive. There were also more optional peripherals available, like RAM disks and floppy drives.