Acer Aspire Z5710 Service Guide - Page 181

Checkpoint A2 A4 A7 A9 AA AB AC B1 00 Description Takes care of runtime image preparation for different BIOS modules. Fill the free area in F000h segment with 0FFh. Initializes the Microsoft IRQ Routing Table. Prepares the runtime language module. Disables the system configuration display if needed. Initialize runtime language module. Display boot option popup menu. Displays the system configuration screen if enabled. Initialize the CPU's before boot, which includes the programming of the MTRR's. Wait for user input at config display if needed. Uninstall POST INT1Ch vector and INT09h vector. Prepare BBS for Int 19 boot. Init MP tables. End of POST initialization of chipset registers. De-initializes the ADM module. Save system context for ACPI. Prepare CPU for OS boot including final MTRR values. Passes control to OS Loader (typically INT19h). 171 Chapter 4