User`s manual

PICO820 Series All-In-One PICO ITX Board User’s Manual
Hardware Description
27
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
—