User manual ASROCK 890GX EXTREME4

[. . . ] 890GX Extreme4 User Manual Version 1. 0 Published July 2010 Copyright©2010 ASRock INC. All rights reserved. 1 Copyright Notice: No part of this manual may be reproduced, transcribed, transmitted, or translated in any language, in any form or by any means, except duplication of documentation by the purchaser for backup purpose, without written consent of ASRock Inc. Products and corporate names appearing in this manual may or may not be registered trademarks or copyrights of their respective companies, and are used only for identification or explanation and to the owners' benefit, without intent to infringe. Disclaimer: Specifications and information contained in this manual are furnished for informational use only and subject to change without notice, and should not be constructed as a commitment by ASRock. ASRock assumes no responsibility for any errors or omissions that may appear in this manual. [. . . ] D8 D9 The Runtime module is uncompressed into memory. Store the Uncompressed pointer for future use in PMM. Leaves all RAM below 1MB Read-Write including E000 and F000 shadow areas but closing SMRAM. Give control to BIOS POST (ExecutePOSTKernel). D4 D5 D6 D7 DA 38 The POST code checkpoints are the largest set of checkpoints during the BIOS pre-boot process. The following table describes the type of checkpoints that may occur during the POST portion of the BIOS: Checkpoint 03 Description Disable NMI, Parity, video for EGA, and DMA controllers. Initialize BIOS, POST, Runtime data area. Also initialize BIOS modules on POST entry and GPNV area. Initialized CMOS as mentioned in the Kernel Variable 04 "wCMOSFlags. " Check CMOS diagnostic byte to determine if battery power is OK and CMOS checksum is OK. Verify CMOS checksum manually by reading storage area. If the CMOS checksum is bad, update CMOS with power-on default values and clear passwords. Initializes data variables that are based on CMOS setup questions. 05 06 Initializes both the 8259 compatible PICs in the system Initializes the interrupt controlling hardware (generally PIC) and interrupt vector table. Enable IRQ-0 in PIC for system timer interrupt. Traps INT1Ch vector to "POSTINT1ChHandlerBlock. " 08 Initializes the CPU. Program the keyboard controller command byte is being done after Auto detection of KB/MS using AMI KB-5. Early CPU Init Start -- Disable Cache - Init Local APIC Set up boot strap proccessor Information Set up boot strap proccessor for POST Enumerate and set up application proccessors Re-enable cache for boot strap proccessor Early CPU Init Exit Initializes the 8042 compatible Key Board Controller. Detects the presence of Keyboard in KBC port. Testing and initialization of different Input Devices. Traps the INT09h vector, so that the POST INT09h handler gets control for IRQ1. Uncompress all available language, BIOS logo, and Silent logo modules. 13 24 30 2A 2C 2E 31 Early POST initialization of chipset registers. Uncompress and initialize any platform specific BIOS modules. [. . . ] 1 Boot Settings Configuration BIOS SETUP UTILITY Boot Boot Settings Configuration Full Screen Logo AddOn ROM Display Boot From Onboard LAN Bootup Num-Lock [Enabled] [Enabled] [Disabled] [On] Disabled: Displays normal POST messages. Enabled: Displays OEM Logo instead of POST messages. +F1 F9 F10 ESC Select Screen Select Item Change Option General Help Load Defaults Save and Exit Exit v02. 54 (C) Copyright 1985-2003, American Megatrends, Inc. Full Screen Logo Use this item to enable or disable OEM Logo. AddOn ROM Display Use this option to adjust AddOn ROM Display. If you enable the option "Full Screen Logo" but you want to see the AddOn ROM information when the system boots, please select [Enabled]. [. . . ]