91Bus Checkpoint CodesThe system BIOS passes control to different buses at the followingcheckpoints:A8h Initialization before passing control to the adaptorROM at E000h completed. Passing control to theadaptor ROM at E000h next.A9h Returned from adaptor ROM at E000h control.Performing any initialization required after theE000 option ROM had control next.Aah Initialization after E000 option ROM control hascompleted. Displaying the system configurationnext.Abh Uncompressing the DMI data and executing DMIPOST initialization next.B0h The system configuration is displayed.B1h Copying any code to specific areas.00h Code copying to specific areas is done. Passingcontrol to INT 19h boot loader next.Checkpoint Code Description2Ah Initializing the different bus system, static, andoutput devices, if present.38h Initialized bus input, IPL, and general devices, ifpresent.39h Displaying bus initialization error messages, if any.95h Initializing bus adaptor ROMs from C8000hthrough D8000h.Checkpoint Code Description
