SMC Networks 1232 Series user manual J4 for Parallel or FDD, Pin Signal Function In/out DB25

J4 for PARALLEL or FDD

A parallel port is available on connector J4 of the SpacePC 1232 module. This connector is a 13x2 pin with 2.54-mm step.

Connector J4 has two operating modes:

ƒParallel port mode

ƒFloppy disk interface mode

The selection between the two modes can be performed in the BIOS Setup (see Chapter 4).

J4

Parallel

Port

Figure 9. J4 Connector Layout

The following table gives the pin-out of connector J4 for both functions (parallel port and floppy).

Table 8. J4 Parallel/Floppy port connector

		Parallel Function
Pin	Signal	Function			in/out	DB25
1	STB# (*)	Strobe Data			out	1
2	AFD# (*)	Autofeed			out	14
3	PD0	LSB	of	printer	out	2
		Data
4	ERR# (*)	Printer error			in	15
5	PD1	Printer Data 1			out	3
6		Initialize printer			out	16
7	PD2	Printer Data 2			out	4
8	SLIN# (*)	Select printer			out	17
9	PD3	Printer Data 3			out	5
10	GND	Signal ground			--	18
11	PD4	Printer Data 4			out	6
12	GND	Signal ground			--	19
13	PD5	Printer Data 5			out	7

	Floppy Function
Signal		Function	In/out	Pin
DSO# (*)		Drive Select 0	In/out	1
DENSEL# (*)			Out	2
INDEX# (*)		Index Pulse	In	3
		Inp
HDSEL# (*)		Head Select	Out	4
TRK0# (*)		Track 0	In	5
DIR# (*)		Step Direction	Out	6
WP# (*)		Write protect	Out	7
STEP# (*)		Step Pulse	Out	8
RDATA# (*)		Read Data	In	9
GND		Signal ground	--	10
DSKCHG# (*)		Disk Change	In	11
GND		Signal ground	--	12
MEDIA-ID0# (*)			In	13

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