◄Chr► This tells the driver to return its input status; in particular, to indicate whether there are characters in the device input buffer ready for immediate retrieval. DevReq06Rec Offset Size Contents ▀▀▀▀▀▀ ▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ +0 1 bLen 0dH (length of this request packet) +1 1 bUnitNo (not used) +2 1 bCmd 06H (command code) +3 2 rStatus OUTPUT: Device Status Word must fill before exit +5H 8 res (reserved) 13 size of this structure rStatus On exit, the driver must place a DevStatusWord here. Always set the Done bit (bit 8). If no characters are ready, set the Busy bit (bit 9). Otherwise, clear bit 9 to indicate that a call to DvRq 04H will be satisfied without waiting. Notes: ■ This is the device driver "catch-point" for DOS fn 0bH (get input status). It is also called by DOS to avoid waiting in an input loop. See Also: Device Requests DevRequestHdrRec Installable Device Drivers -♦-