SOYO SOYOTM manual Multi I/O Port Addresses

16 Hardware

Setup

Multi I/O Port Addresses

Default settings for multi I/O port addresses are shown in the table below.

Port	I/O Address	IRQ	Status
LPT1*	378H	7	ECP + EPP
COM1	3F8H	4
COM2	2F8H	3

*If default I/O port addresses conflict with other I/O card (e.g. sound cards or I/O cards), you must adjust one of the I/O addresses to avoid

address conflict. (You can adjust these I/O addresses from the BIOS setup.)

Note: Some sound cards have a default IRQ setting for IRQ7, which may conflict with printing functions. If this occurs do not use sound card functions at the same time you print.

Connectors

Attach the mainboard to case devices via connectors on the mainboard. Refer to Figure 1-1 for connector locations and connector pin positions.

PW – ATX Power Supply On/Off Switch Connector (Momentary type)

Attach a two-pin switch to this connector for turning the ATX power supply on/off.

COM1, COM2 – COM1/COM2 Connectors

Attach COM1/COM2 device to these connectors.