- First International Computer Laptop User Manual

Software Functional Overview
3-12 FIC A360 Service Manual
3.3.12 SMBus Devices
The SMBus is a two-wire interface through which the system can communicate with power-
related chips. The BIOS should initialize the SMBus devices during POST.
3.3.12 VT82C686B SMBus Connection Devices
SMBus Device Master/Slave Address BIOS Need to Initialization
VT82C686B – Core
Logic
Both Host and
Slave
02h Enable SMBus interface and
SMBus interrupt
SO-DIMM Slave A0h Not Need
PMU07 Master 10h Enable PS01 decode interface
MAXIM1617 –
Temperature Sensor
Slave 9Ch Program the desired temperature
range.
OZ168 Slave 34h Audio DJ
Battery Slave A8h No Need
Clock Synthesizer Slave D2h
Program the desired clock
frequency (Pin23 output 24MHz,
Pin22 output 48MHz)
3.3.13 Resource Allocation
This section summarizes the resource allocation of the notebook computer.
I/O Map
Hex Address Device
000 - 01F 8237-1
020 - 021 8259-1
022 VIA VT82C686B
040 - 05F 8254
060 - 064 Keyboard Controller
068 – 06C PMU07 Controller
070 - 07F RTC & NMI Mask
080 - 08F DMA Page Registers
092 System Control Port
0A0 - 0A1 8259-2
0B2 Advanced Power Management Control Port
0B3 Advanced Power Management Status Port
0C0 – 0DF 8237-2
0F0 – 0FF Math Coprocessor
170 - 177 IDE Secondary Command Block
1F0 - 1F7 IDE Primary Command Block
200 - 20F Game Port
220 - 22F Sound Blaster
279 ISA PnP Address