Agilent Technologies 54845B Manual page 100

Chapter 5: Troubleshooting
POST Code Listing
3E Test 8259 interrupt mask bits for channel 1.
40 Test 8259 interrupt mask bits for channel 2.
43 Test 8259 functionality.
47 Initialize EISA slot.
49 Calculate total memory by testing the last double word of each 64K page.
4E Program MTRR of M1 CPU. Initialize APIC for P6 class CPU.
50 Initialize USB.
52 Test all memory and clear all extended memory to 0.
55 Display number of processors for multi processor platforms.
57 Display PnP logo. Early ISA PnP initialization.
59 Initialize the combined Trend Anti-Virus code.
5B Show message for entering awardflash.exe.
5D Initialize Init_Onboard_Super_IO switch. Init_Onboard_AUDIO switch
60 Okay to enter setup utility.
65 Initialize PS/2 mouse.
67 Prepare memory size information for function call: INT 15hex ax=E820hex.
69 Turn on L2 Cache.
6B Program Chipset registers according to items described in setup & Auto configuration table.
6D Assign resources to all ISA PnP devices. Auto assign ports to COM ports if setup is on Auto.
6F Initialize floppy controller. Set up floppy related fields in 40:hardware.
73 Enter AWARDFLASH.EXE if found if floppy drive.
75 Detect and install all IDE devices. Example: hard drive, LS120, CDROM.
77 Detect serial ports and parallel ports.
7A Detect and install co-processor.
7F Switch back to text mode if full screen is supported.
82 Call chipset power management hook. Recover the text found used by EPA logo. If password is
set, ask for password.
83 Save all data in stack back to CMOS.
84 Initialize ISA PnP boot devices.
85 USB final initialization. Net PC. Switch screen back to text mode. Set up APCI table at of memory.
Invoke ISA adapter ROMs. Assign IRQs to PCI devices. Initialize APM. Clear noise of IRQs.
93 Read HDD book sector information for trend Anti-Virus code.
94 Enable L2 Cache. Program boot up speed. Chipset final initialization. Power management final
initialization. Clear screen & display summary table. Program K write allocation. Program P6 class
write combining.
95 Program Daylight Savings. Update Keyboard LED an typematic rate.
96 Build MP table. build and updated ESCD. Set CMOS century to 20 Hex or 19Hex. Load CMOS time
into DOS timer tick. Build MSIRQ routing table.
FF Boot Attempt (INT 19 Hex).
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