Ampro Corporation 700 manual Slctin, Step, Autofdx, Drveno, Err, Hdsel, Pinit, Dir, Ptslct, Wgate

Chapter 3 Hardware

Pin #	Signal	Description
13	SLCTIN	Select In – This output signal to the printer is used to select the printer. I/O pin
		in ECP/EPP mode.
	STEP*	Step – Low pulse for each track-to-track movement of the head.
14	AUTOFDX*	Auto Feed* – This is a request signal into the printer to automatically feed one
		line after each line is printed.
	DRVENO	Floppy Drive Density Select 0 –
15	ERR*	Error – This is a status output signal from the printer. A Low State indicates an
		error condition on the printer.
	HDSEL*	Head Select – Selects side for Read/Write operations (0 = side 1, 1 = side 0)
16	PINIT*	Printer Initialize* – This signal used to Initialize printer. Output in standard
		mode, I/O in ECP/EPP mode.
	DIR*	Direction – Head movement direction (0 = inward motion,
		1 = outward motion).
17	PTSLCT	Printer Select – This is a status output signal from the printer. A High State
		indicates it is selected and powered on.
	WGATE*	Write Gate – Signal to the drive to enable current flow in the write head.
18	GND	Digital Ground
19	GND	Digital Ground
20	GND	Digital Ground
21	GND	Digital Ground
22	GND	Digital Ground
23	GND	Digital Ground
24	GND	Digital Ground
25	GND	Digital Ground
26	NC	Not Connected

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

38 Reference Manual ReadyBoard 700