Quadtel AT Compatible BIOS
02 Flag TestSystem
04 Register Test
06 System Hardware Initialization
08 Initialize Chip Set Registers
0A BIOS ROM Checksum
0C DMA Page Regigister Test
0E 8254 Timer Test
10 8254 Timer Initialization
12 8237 DMA Controller Test
14 8237 DMA InitializationInitialize
16 8259/Reset Coprocessor
18 8259 Interrupt Controller Test
1A Memory Refresh Test
1C Base 64KB Address Test
1E Base 64KB Memory Test
20 Base 64KB Test (Upper 16 bits)
22 8742 Keyboard Self Test
24 MC146818 CMOS Test
26 Start First Protected Mode Test
28 Memory Sizing Test
2A Autosize Memory Chips
2C Chip Interleave Enable Test
2E First Protected Mode Test Exit
30 Unexpected Shutdown
32 System Board Memory Size
34 Relocate Shadow Ram if Configured
36 Configure EMS System
38 Configure Wait States
3A ReTest 64K Base RAM
3C CPU Speed Calculation
3E Get Switches From 8042
40 Configure CPU Speed
42 Initialize Interrupt Vectors
44 Verify Video Configuration
46 Initialize Video System
48 Test Unexpected Interrupts
4A Start Second Protected Mode Test
4C Verify LDT Instruction
4E Verify TR Instruction
50 Verify LSL Instruction
52 Verify LAR Instruction
54 Verify VERR Instruction
56 Unexpected Exception
58 Address Line 20 Test
5A Keyboard Ready Test
5C Determine AT or XT Keyboard
5E Start Third Protected Mode Test
60 Base Memory Test
62 Base Memory Address
64 Shadow Memory Test
66 Extended Memory Test
68 Extended Address Test
6A Determine Memory Size
6C Display Error Messages
6E Copy BIOS to Shadow Memory
70 8254 Clock Test
72 MC146818 Real Time Clock Test
74 Keyboard Stuck Key Test
76 Initialize Hardware Interrupt Vect.
78 Math Coprocessor Test
7A Determine COM Ports Available
7C Determine LPT Ports Available
7E Initialize BIOS Data Area
80 Determine Floppy/Fixed Controller
82 Floppy Disk Test
84 Fixed Disk Test
86 External ROM Scan
88 System Key Lock Test
8A Wait for F1 Key Pressed
8C Final System Initialization
8E Interrupt 19 Boot Loader
B0 Unexpected Interrupt
3 short beepsIndicates any Failure in Early Power On Self Test