User`s manual

PICO820 Series All-In-One PICO ITX Board User’s Manual

Hardware Description

Address Devices

3B0-3BF MDA video card

3C0-3CF EGA card

3D0-3DF CGA card

3F6 Forward to SATA (SATA Controller)

3F8-3FF Serial port #1 (COM1)

3E8-3EF Serial port #3 (COM3)

2F8-2FF Serial port #2 (COM2)

2E8-2EF Serial port #4 (COM4)

3.5 Interrupt Controller

The PICO820 Series is a 100% PC compatible control board. It

consists of 16 interrupt request lines, and four out of them can be

programmable. The mapping list of the 16 interrupt request lines is

shown as the following table.

IRQ Parity check error

IRQ0 System timer output

IRQ1 Keyboard

IRQ2 Interrupt rerouting from IRQ8 through IRQ15

IRQ3 Serial port #2

IRQ4 Serial port #1

IRQ5 PCI Device Share

IRQ7 —

IRQ8 Real time clock

IRQ9 ACPI Controller

IRQ10 —

IRQ11 —

IRQ12 PS/2 Mouse

IRQ13 Math coprocessor

IRQ14 Primary IDE channel

IRQ15 —