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Autodocs
 Devices:
 parallel.device
  CMD_CLEAR
  CMD_FLUSH
  CMD_READ
  CMD_RESET
  CMD_START
  CMD_STOP
  CMD_WRITE
  OpenDevice
  PDCMD_QUERY
  PDCMD_SETPARAMS
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GuruMeditation
Docs » Autodocs » parallel.device » PDCMD_QUERY

NAME

	Query -- query parallel port/line status

FUNCTION

	This command return the status of the parallel port lines and
	registers. 
   IO REQUEST
	io_Message      must have mn_ReplyPort initialized
	io_Device       set by OpenDevice
	io_Unit         set by OpenDevice
	io_Command      PDCMD_QUERY (09)

RESULT

	io_Status        BIT  ACTIVE  FUNCTION
	                 0     high   printer busy toggle (offline)
	                 1     high   paper out
	                 2     high   printer selected on the A1000
	                              printer selected & serial "Ring
	                              Indicator" on the A500/A2000
	                              Use care when making cables.
	                 3      -     read=0,write=1
	               4-7            reserved

BUGS

	In a earlier version of this AutoDoc, BUSY and PSEL were reversed.
	The function has always been correct.

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