11
2 N/A
Programmable
Interrupt
3 *
8
Communications Port (COM2)
4 *
9
Communications Port (COM1)
5 *
6
Sound Card (sometimes LPT2)
6 *
11
Floppy Disk Controller
7 *
7
Printer Port (LPT1)
8
N/A
System CMOS/Real Time Clock
9 *
10
ACPI Mode when enabled
10 *
3
IRQ Holder for PCI Steering
11 *
2
IRQ Holder for PCI Steering
12 *
4
PS/2 Compatible Mouse Port
13
N/A
Numeric Data Processor
14 *
5
Primary IDE Channel
15 *
1
Secondary IDE Channel
* These IRQs are usually available for ISA or PCI devices.
NOTE!
If using PCI cards on shared slots, make sure that the drivers
support
“
Shared IRQ
”
or that the cards don
’
t need IRQ assignments.
Conflicts will arise between the two PCI groups that will make the
system unstable or cards inoperable.
2-5-3 Expansion Slots
AMD 890GX Series motherboard series offer one PCI-Express 2.0x16@ 16 lanes
graphics slot and one PCI-Express 2.0x16@ 4 lanes. One PCI Express2.0 x1 I/O slot
tackling the most demanding multimedia tasks nowadays. The AMD 890GX
motherboards also carry two 32-bit PCI slot and one mini-PCIE slot to guarantee the
rich connectivity for the I/O peripheral devices.
2-6 Connectors and Headers
2-6-1 Connectors
PCI-E2.0 x1 Slot
32-bit PCI Slot
PCI-E 2.0 x16 Slot by 16-lane
Mini-PCIE Slot
PCI-E 2.0 x16 Slot
by 4-lane
32-bit PCI Slot