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Int 40 - Acorn Bbc Master 512 - "osfind" - Open File [O]
AL = operation
00h close file
40h open file for reading
80h open file for writing
C0h open file for random access
DS:BX -> CR-terminated filename
Return: AL = file handle (00h if file closed or could not be opened)
Note: the Acorn BBC Master 512 is an 80186-based add-on board for the
6502-based Master 128 which uses the original CPU as an I/O processor
See Also: INT 41"Acorn",INT 42"Acorn",INT 43"Acorn",INT 44"Acorn",INT 4C"Acorn"
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