eMachines D620 Service Guide - Page 86

Code 8Ah 8Bh 8Ch 8Fh 90h 91h 92h 93h 95h 96h 97h 98h 99h 9Ah 9Ch 9Dh 9Eh 9Fh A0h A2h A4h A8h AAh ACh AEh B0h B2h B4h B5h B6h B9h BAh BBh BCh BDh BEh BFh C0h C1h C2h C3h 96 Beeps 1-2 1 POST Routine Description Initialize Extended BIOS Data Area Test and initialize PS/2 mouse Initialize floppy controller Determine number of ATA drives (optional) Initialize hard-disk controllers Initialize local-bus hard-disk controllers Jump to UserPatch2 Build MPTABLE for multi-processor boards Install CD-ROM for boot Clear huge ES segment register Fixup Multiprocessor table Search for option ROMs. One long, two short beeps on checksum failure. Check for SMART drive (optional) Shadow option ROMs Set up Power Management Initialize security engine (optional) Enable hardware interrupts Determine number of ATA and SCSI drives Set time of day Check key lock Initialize Typematic rate Erase F2 prompt 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 Chapter 4