Simple Remote Reset
Power On/Off Device for Parport

this is a simple schematic for a remote reset/power on/off device
to use for controlling up to 4 lines via the parallel port.
depending on the number of lines you require, the opto coupler
will be PC817, PC827 or PC847.

RESET SCHEMATICS

or you could use the following schematic to drive up to 8 lines,
with the drawback that a reboot of the controlling machine will
probably reboot all your attached devices ...

RESET SCHEMATICS 2

the software part is pretty simple, but sufficient. parport.tar.gz

ECP Parallel

ECP = Extended Capabilities Port

25 PIN D-SUB FEMALE (at the PC)

25 PIN D-SUB FEMALE at the PC.

Pin Name Dir Description
1 nStrobe --> Strobe
2 data0 <-> Address, Data or RLE Data Bit 0
3 data1 <-> Address, Data or RLE Data Bit 1
4 data2 <-> Address, Data or RLE Data Bit 2
5 data3 <-> Address, Data or RLE Data Bit 3
6 data4 <-> Address, Data or RLE Data Bit 4
7 data5 <-> Address, Data or RLE Data Bit 5
8 data6 <-> Address, Data or RLE Data Bit 6
9 data7 <-> Address, Data or RLE Data Bit 7
10 /nAck <-- Acknowledge
11 Busy <-- Busy
12 PError <-- Paper End
13 Select <-- Select
14 /nAutoFd --> Autofeed
15 /nFault <-- Error
16 /nInit --> Initialize
17 /nSelectIn --> Select In
18 GND --- Signal Ground
19 GND --- Signal Ground
20 GND --- Signal Ground
21 GND --- Signal Ground
22 GND --- Signal Ground
23 GND --- Signal Ground
24 GND --- Signal Ground
25 GND --- Signal Ground

Note: Direction is Computer relative Device.