Ampro Corporation PCI-104 quick start Busy, Alf, Init, Slctin

Appendix B				I/O Interface Board
Table B-12. Parallel Port (LPT) Interface Pin/Signal Descriptions (J12)
	Pin #	Signal		Description
	1	Strobe*		Strobe* – This is an output signal used to strobe data into the printer. I/O pin
				in ECP/EPP mode.
	2	PD0		Parallel Port Data 0 – These signals <0 to 7> provide the parallel port data
				signals
	3	PD1		Parallel Port Data 1 – Refer to pin-2 for more information.
	4	PD2		Parallel Port Data 2 – Refer to pin-2 for more information.
	5	PD3		Parallel Port Data 3 – Refer to pin-2 for more information.
6	PD4		Parallel Port Data 4 – Refer to pin-2 for more information.
	7	PD5		Parallel Port Data 5 – Refer to pin-2 for more information.
	8	PD6		Parallel Port Data 6 – Refer to pin-2 for more information.
	9	PD7		Parallel Port Data 7 – Refer to pin-2 for more information.
	10	ACK*		Acknowledge – This is a status output signal from the printer. A Low State
				indicates it has received the data and is ready to accept new data.
	11	BUSY		Busy – This is a Status output signal from the printer. A High State indicates
				the printer is not ready to accept data.
	12	PE		Paper End – This is a status output signal from the printer. A High State
				indicates it is out of paper.
	13	SLCT		Select – This is a status output signal from the printer. A High State indicates
				it is selected and powered on.
	14	ALF*		Auto Feed – This is a request signal into the printer to automatically feed one
				line after each line is printed.
	15	ERR*		Error – This is a status output signal from the printer. A Low State indicates
				an error condition on the printer.
	16	INIT*		Initialize – This signal used to Initialize printer. Output in standard mode, I/O
				in ECP/EPP mode.
	17	SLCTIN*		Select In – This output signal is used to select the printer. I/O pin in
				ECP/EPP mode.
	18, 19, 20,		GND	Ground
	21, 22, 23,
	24, 35

Notes: The shaded area denotes power or ground. The signals marked with * = Negative true logic.

CoreModule 800 QuickStart Guide 33