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struc OutputRequest             ; Device-Driver function 10h
 orLength       db ?            ; Length of structure, in bytes
 orUnit         db ?            ; Not used
 orFunction     db ?            ; Function number (10h)
 orStatus       dw ?            ; Status
 orReserved     db 8 dup (?)    ; Reserved
 orData         db ?            ; Not used
 orBuffer       dd ?            ; INPUT:  buffer address
 orBytes        dw ?            ; INPUT:  no. of bytes to write
                                ; OUTPUT: no. of bytes written
ends                            ; = 20d bytes