Advantech POC-174, Руководство пользователя

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Chapter 4 Jumper Settings and Connectors 41
later you can do this in the system BIOS setup. The table overleaf
shows the default settings for the panel PC’s serial ports.
COM1 and COM2 are one set. You can exchange the address range
and interrupt IRQ of COM1 for the address range and interrupt IRQ of
COM2. After exchanging, COM1's address range is 2F8 ~ 2FF and its
request IRQ is IRQ3: and COM2's address range is 3F8 ~ 3FF and its
interrupt IRQ is IRQ4.
COM3 and COM4 are another set. Their selectable function is the
same as the COM1/COM2 set.
Table 4-5: Serial port default settings
Port Address Range Interrupt
COM1 3F8 ~ 3FF IRQ4
COM2 2F8 ~ 2FF IRQ3
COM3 3E8 ~ 3EF IRQ10
COM4 2E8 ~ 2EF IRQ5