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AH = 02h CX = number of bytes to read ES:BX -> buffer
Return:
CF clear if successful DX = number of bytes read ES:BX -> byte following last byte read CF set on error AH = status (see #00409)
See Also: AH=00h"CASSETTE" - AH=03h"CASSETTE" - MEM 0040h:0069h - MEM 0040h:006Bh"PC"
(Table 00409) Values for Cassette status: 00h successful 01h CRC error 02h bad tape signals 04h no data 80h invalid command 86h no cassette present
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