SBC81870 SERIES USER'S MANUAL VERSION A1 SEPTEMBER ...

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<strong>SBC81870</strong> Intel ® Pentium ® M w/ DDR/VGA/Dual LAN16h :17h :18h :19h :1Ah :1Bh :1Ch :1Dh :1Eh :1Fh :20h :21h :22h :23h :Initial Early_Init_Onboard_Generator switch.ReservedDetect CPU information including brand, SMI type(Cyrix or Intel) and CPU level (586 or 686).ReservedReservedInitial interrupts vector table. If no special specified,all H/W interrupts are directed toSPURIOUS_INIT_HDLR & S/W interrupts toSPURIOUS_soft_HDLR.ReservedInitial EARLY_PM_INIT switchReservedLoad keyboard matrix (notebook platform)ReservedHPM initialization (notebook platform)Reserved1. Check validity of RTC value:e.g. a value of 5Ah is an invalid value for RTCminute.2. Load CMOS settings into BIOS stack. If CMOSchecksum fails, use default value instead.3. Prepare BIOS resource map for PCI & PnP use. IfESCD is valid, take into consideration of theESCD’s legacy information.4. Onboard clock generator initialization. DisableTrouble Shooting 103
<strong>SBC81870</strong> Intel ® Pentium ® M w/ DDR/VGA/Dual LAN24h :25h :26h :27h :28h :respective clock resource to empty PCI & DIMMslots.5. Early PCI initialization:-Enumerate PCI bus number-Assign memory & I/O resource-Search for a valid VGA device & VGA BIOS, andput it into C000:0.ReservedReservedReservedInitialize INT 09 bufferReserved29h : 1. Program CPU internal mtrr (P6 & PII) for 0-640Kmemory address.2. Initialize the APIC for Pentium class CPU.3. Program early chipset according to CMOS setup.Example: onboard IDE controller.4. Measure CPU speed.5. Invoke video BIOS.2Ah :2Bh :2Ch :2Dh :2Eh :2Fh :ReservedReservedReserved1. Initialize multi-language2. Put information on screen display, including Awardtitle, CPU type, CPU speed …ReservedReserved104Trouble Shooting
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SBC81870 SERIES USER'S MANUAL VERSION A1 SEPTEMBER ...

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