Pentium SQ578, Руководство пользователя

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SQ578
3-18
3.5.13 Parallel Port Connector (26-pin Block) (J22)
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
Parallel Port
3.5.14 Serial Port (J5/J9)
The SQ578 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
COM1
COM2
3.5.15 VGA (J27) & Feature Connector (J25) (option)
This SQ578 mainboard has Super VGA onboard. This connector supports the VGA
output via a ribbon cable. Connect the VGA ribbon cable to this connectors and mount
the bracket to the back of the case.