User`s manual

SQ575

3.5.14 Parallel Port Connector (26-pin Block) (J7)

The motherboard includes a bi-directional parallel port (EPP/ECP compatible). The parallel

port is capable of being disabled or remapped to either the secondary LPT address or the

primary LPT address through BIOS if other parallel ports are installed. The parallel port

contains 12mA source output drivers on the drive interface and incorporates Chip Protect

circuitry for protection against damage due to printer’s power being on.

Pin Signal Name Pin Signal Name

1 STROBE# 14 AUTOFD#

2 DATA BIT 0 15 FAULT#

3 DATA BIT 1 16 PINIT#

4 DATA BIT 2 17 SLCT IN#

5 DATA BIT 3 18 Ground

6 DATA BIT 4 19 Ground

7 DATA BIT 5 20 Ground

8 DATA BIT 6 21 Ground

9 DATA BIT 7 22 Ground

10 ACK# 23 Ground

11 BUSY 24 Ground

12 PEERROR 25 Ground

13 SLCTt

3.5.15 Serial Port (JP1/JP2)

The SQ575 has two serial ports. The electrical characteristics are compliant with the EIA-

232-D Serial Communications Specifications. The serial ports may be remapped above other

installable serial ports or disabled through the BIOS.

Pin Signal Name

1 DCD

2 TXD

3 RXD

4 DTR

5 GND

6 DSR

7 RTS

8 CTS

9 RI

COM2 COM1