Function 2Fh Get Disk Transfer Address (DTA)
Returns current disk transfer address used by all DOS read/write operations
entry AH 2Fh
return ES:BX address of DTA
note 1) The DTA is set by function call 1Ah
2) Default DTA address is a 128 byte buffer at offset 80h in that program's
Program Segment Prefix
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Ashley Roll has put together a really nice little unit here. Leave off the MAX232 and keep these handy for the few times you need true RS232! |
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