Acer TravelMate 4220 TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 85

AAh ACh AEh B0h B2h Code B4h B5h B6h B9h BAh BBh BCh BDh BEh BFh C0h C1h C2h C3h C4h C5h C6h C7h C8h C9h D2h E0h E1h E2h E3h E4h E5h E6h E7h E8h E9h EAh EBh ECh EDh EEh EFh Chapter 4 Beeps 1 POST Routine Description Scan for F2 key stroke Enter SETUP Clear Boot flag Check for errors POST done-prepare to boot operating system One short beep before boot Terminate QuietBoot (optional) Check password (optional) Prepare Boot Initialize DMI parameters Initialize PnP Option ROMs Clear parity checkers Display MultiBoot menu Clear screen (optional) Check virus and backup reminders Try to boot with INT 19 Initialize POST Error Manager (PEM) Initialize error logging Initialize error display function Initialize system error handler PnPnd dual CMOS (optional) Initialize notebook docking (optional) Initialize notebook docking late Force check (optional) Extended checksum (optional) Unknown interrupt Initialize the chipset Initialize the bridge Initialize the CPU Initialize the system timer Initialize system I/O Check force recovery boot Checksum BIOS ROM Go to BIOS Set Huge Segment Initialize Multi Processor Initialize OEM special code Initialize PIC and DMA Initialize Memory type Initialize Memory size Shadow Boot Block System memory test 75