Acer Aspire 7730 Aspire 7730/7730G/7730Z/7730ZG Service Guide - Page 160

POST Code 0x1A 0x22 0x40 0x67 0x32 0x69 0x6B 0x3C 0x3D 0x42 0x46 0x45 0x49 0xC6 0xC5 0x48 0xD1 0xD3 0x24 0xCC 0x8A 0x9D 0x55 0x52 0x54 0x76 0x4A Function Initialize DMA command register with these settings: 1. Memory to memory disabled 2. Channel 0 hold address disabled 3. Controller enabled 4. Normal timing 5. Fixed priority 6. Late write selection 7. DREQ sense active 8. DACK sense active low. Reset the keyboard. Test A20 line Quick initialization of all Application Processors in a multi-processor system Compute CPU speed. Initialize the handler for SMM. If CMOS is bad, load Custom Defaults from flash into CMOS. If successful, reboot. If CMOS is valid, load chipset registers with values from CMOS, otherwise load defaults and display Setup prompt. If Auto Configuration is enabled, always load the chipset registers with the Setup defaults (Rel 6.0). Load alternate registers with CMOS values Initialize interrupt vectors 0 thru 77h Verify the ROM copyright notice Initialize all motherboard devices. 1. Size the PCI bus topology and set bridge bus numbers. 2. Set the system max bus number. 3. Write a 0 to the command register of every PCI device. 4. Write a 0 to all 6 base registers in every PCI device. 5. Write a -1 to the status register of every PC Initialize note dock PnPnd dual CMOS (optional) Verify that the equipment specified in the CMOS matches the hardware currently installed. If the monitor type is set to 00 then a video ROM must exist. If the monitor type is 1 or 2 set the video switch to CGA. If monitor type 3, set the video switch to m Initialize BIOS stack Setup E820h and WAD memory map Set segment-register addressability to 4 GB Redirect Int 10h to enable target board to use a remote serial video (PICO BIOS). Initialize Extended BIOS Data Area and initialize the mouse. Initialize Security Engine. USB Initialization Verify keyboard reset. Initialize keystroke clicker if enabled in Setup. Check status bits for keyboard-related failures. Display error messages on the screen. Initialize all video adapters in system Phase LBT LBT LBT LBT LBT LBT LBT LBT LBT LBT LBT LBT LBT LBT LBT LBT LBT LBT LBT LBT LBT LBT LBT LBT LBT LBT LBT 150 Component Core Core Core Core Core Core Core Core Core Core Core Core Core Core Core Core Core Core Core Core Core Core Core Core Core Core Core Chapter 4