Tyan Computer S2912 warranty Phoenix Bios Post Code, Code Beeps / Description

4.2 Phoenix BIOS Post Code

Code	Beeps / Description
02h	Verify Real Mode
03h	Disable Non-Maskable
	Interrupt (NMI)
04h	Get CPU type
06h	Initialize system hardware
08h	Initialize chipset with initial
	POST values
09h	Set IN POST flag
0Ah	Initialize CPU registers
0Bh	Enable CPU cache
0Ch	Initialize caches to initial
	POST values
0Eh	Initialize I/O component
0Fh	Initialize the local bus IDE
10h	Initialize Power
	Management
11h	Load alternate registers with
	initial POST values
12h	Restore CPU control word
	during warm boot
13h	Initialize PCI Bus Mastering
	devices
14h	Initialize keyboard controller
16h	1-2-2-3	. BIOS ROM
	checksum
17h	Initialize cache before
	memory autosize
18h	8254 timer initialization
1Ah	8237 DMA controller
	initialization
1Ch	Reset Programmable
	Interrupt Controller
20h	1-3-1-1	. Test DRAM refresh
22h	1-3-1-3	. Test 8742 KBD
	Controller
24h	Set ES segment register to
	4 GB
26h	Enable A20 line
28h	Autosize DRAM
29h	Initialize POST Memory
	Manager
2Ah	Clear 512 KB base RAM
2Ch	1-3-4-1	. RAM failure on
	address
2Eh	1-3-4-3	. RAM failure on

Code		Beeps / Description
32h		Test CPU bus-clock
		frequency
33h		Initialize Phoenix Dispatch
		Manager
36h		Warm start shut down
38h		Shadow system BIOS ROM
3Ah		Autosize cache
3Ch	Advanced configuration of
		chipset registers
3Dh		Load alternate registers with
		CMOS values
42h		Initialize interrupt vectors
45h		POST device initialization
46h		2-1-2-3	. Check ROM
		copyright	notice
48h	Check video configuration
		against CMOS
49h		Initialize PCI bus and
		devices
4Ah		Initialize all video adapters
		in system
4Bh		QuietBoot start (optional)
4Ch		Shadow video BIOS ROM
4Eh		Display BIOS copyright
		notice
50h		Display CPU type and
		speed
51h		Initialize EISA board
52h		Test keyboard
54h		Set key click if enabled
58h		2-2-3-1	. Test for
		unexpected interrupts
59h	Initialize POST display
		service
5Ah		Display prompt "Press F2 to
		enter SETUP"
5Bh		Disable CPU cache
5Ch		Test RAM between 512 and
		640 KB
60h		Test extended memory
62h		Test extended memory
		address lines
64h		Jump to UserPatch1
66h		Configure advanced cache
		registers
67h		Initialize Multi Processor

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