5 Schematic Diagrams and PCB Silkscreen
S820/S850
5-8
5-1-1(g) Main Board Schematic Sheet 8 of 26(PIIX4e-3)
D
C
B
A
D
C
B
A
1
2
3
4
1
2
3
4
Audio AD 23
INTA* Docking, CardBus, Modem
INTB* Docking, Cardbus, Lan
Reserved
PREQA* CardBus
Modem AD 24
PREQ 3 CardBus
PREQ 1 Docking 1
LAN AD 25
Programmable Interrupt Request
INTC* Video, Audio
PIIX4E Resource Table
CardBus AD 19
PIIX4E AD 18
PREQB* Audio
INTD* USB
PREQ 4 Audio
IDSEL
PREQC* Reserved
PC/PCI DMA Request
PCI BUS Request
PREQ 2 Modem / LAN
PREQ 0 Docking 0