| 03 |
NMI is disabled. The check soft reset/power-on |
| 05 |
BIOS stack set. Going to disable cache if any |
| 06 |
POST code to be uncompressed |
| 07 |
CPU Init and CPU data area Init to be done |
| 08 |
CMOS checksum calculation to be done next |
| 0B |
Any initialization before keyboard BAT to be done |
| 0C |
KB controller I/B free. To issue the BAT command to keyboard controller |
| 0E |
Any initialization after KB controller BAT to be done next |
| 0F |
Keyboard command byte to be written |
| 10 |
Going to issue Pin 23, 24 blocking/unblocking command |
| 11 |
Going to check pressing of (INS>, <END> key during power on |
| 12 |
To Init CMOS if "Init CMOS in every boot" is set or <END> key is pressed. Going to disable DMA and Interrupt controllers |
| 13 |
Video display is disabled and port-B is initialized. Chipset init about to begin |
| 14 |
8254 timer test about to start |
| 19 |
About to start memory refresh test |
| 1A |
Memory refresh line is toggling. Going to check 15µs ON/OFF time |
| 23 |
To read 8042 input port and disable Megakey GreenPC feature. Make BIOS code segment writeable |
| 24 |
To do any setup before Int vector init |
| 25 |
Interrupt vector initialization to begin. To clear password if necessary |
| 27 |
Any initialization before setting video mode to be done |
| 28 |
Going for monochrome mode and color mode setting |
| 2A |
Different buses init (system, static, output devices) to start if present |
| 2B |
To give control for any setup required before optional video ROM check |
| 2C |
To look for optional video ROM and give control |
| 2D |
To give control to any processing after video ROM returns control |
| 2E |
If EGA/VGA not found then do display memory R/W test |
| 2F |
EGA/VGA not found. Display memory R/W test about to begin |
| 30 |
Display memory R/W test passed. About to look for the retrace checking |
| 31 |
Display memory R/W test and retrace checking failed. To do alternate Display memory R/W test |
| 32 |
Alternate Display memory R/W test passed. To look for the alternate display retrace checking |
| 34 |
Video display checking over. Display mode to be set next |
| 37 |
Display mode set. Going to display the power on message |
| 38 |
Different buses init (input, IPL, general devices) to start if present |
| 39 |
Display different buses initialization error messages |
| 3A |
New cursor position read and saved. To display the hit <DEL> message |
| 40 |
To prepare the descriptor tables |
| 42 |
To enter in virtual mode for memory test |
| 43 |
To enable interrupts for diagnostic mode |
| 44 |
To initialize data to check memory wrap around at 0:0 |
| 45 |
Data initialized. Going to check for memory wrap around at 0:0 and finding the total system memory size |
| 46 |
Memory wrap around test done. Memory size calculation over. About to go for writing patterns to teat memory |
| 47 |
Pattern to be tested written in extended memory. Going to write patterns in base 540K memory |
| 48 |
Patterns written in base memory. Going to find out amount of memory below 1MB memory |
| 49 |
Amount of memory below 1MB found and verified. Going to find out amount of memory above 1MB memory |
| 4B |
Amount of memory above 1MB found and verified. Check for soft reset and going to clear memory below 1MB for soft reset |
| 4C |
Memory below 1MB cleared. Going to clear memory above 1MB |
| 4D |
Memory above 1MB cleared. Going to save the memory size |
| 4E |
Memory test started. About to display the first 64K memory size |
| 4F |
Memory size display started. This will be updated during the memory test. Going for sequential and random memory test |
| 50 |
Memory testing/initialization below 1MB complete. Going to adjust displayed memory size for reallocation/shadow |
| 51 |
Memory size display adjusted due to reallocation/shadow. Memory test above 1MB to follow |
| 52 |
Memory testing/initialization above 1MB complete. Going to save memory size information |
| 53 |
Memory size information is saved. CPU registers are saved. Going to enter real mode |
| 54 |
Shutdown successful, CPU in real mode. Going to disable gate A20 line and disable parity/NMI |
| 57 |
A20 address line, parity/NMI disable successful. Going to adjust memory size depending on reallocation/shadow |
| 58 |
Memory size adjusted for reallocation/shadow. Going to clear Hit <DEL> message |
| 59 |
Hit <DEL> message cleared. <WAIT...> message displayed. About to start DMA and interrupt controller test |
| 60 |
DMA page register test passed. To do DMA #1 base register test |
| 62 |
DMA #1 base register test passed. To do DMA #2 base register test |
| 65 |
DMA #2 base register test passed. To program DMA unit 1 and 2 |
| 66 |
DMA unit 1 and 2 programming over. To initialize 8259 interrupt controller |
| 7F |
Extended NMI( sources enabling is in progress |
| 80 |
Keyboard test started. Clearing output buffer, checking for stuck key, to issue keyboard reset command. |
| 81 |
Keyboard reset error/stuck key found. To issue keyboard controller interface test command |
| 82 |
Keyboard controller interface test over. To write command byte and init circular buffer |
| 83 |
Command byte written, global data init done. To check for lock-key |
| 84 |
Lock-key checking over. To check for memory size mismatch with CMOS |
| 85 |
Memory size check done. To display soft error and check for password or bypass setup |
| 86 |
Password checked. About to do programming before setup |
| 87 |
Programming before setup complete. To uncompress SETUP code and execute CMOS setup |
| 88 |
Returned from CMOS setup program and screen is cleared. About to do programming after setup |
| 89 |
Programming after setup complete. Going to display power on screen message |
| 8B |
First screen message displayed. <WAIT..> message displayed. PS/2 mouse check and extended BIOS data area allocation to be done |
| 8C |
Setup options programming after CMOS setup about to start |
| 8D |
Going for hard disk controller reset |
| 8F |
Hard disk controller reset done. Floppy setup to be done next |
| 91 |
Floppy setup complete. Hard disk setup to be done next |
| 95 |
Init of different buses optional ROMs from C800 to start |
| 96 |
Going to do any init before C800 optional ROM control |
| 97 |
Any init before C800 optional ROM control is over. Optional ROM check and control will be done next |
| 98 |
Optional ROM control is done. About to give control to do any required processing after optional ROM returns control and enable external cache |
| 99 |
Any initialization required after optional ROM test over. Going to setup timer data area and printer base address |
| 9A |
Return after setting timer and printer base address. Going to set the RS-232 base address |
| 9B |
Returned after RS-232 base address. Going to do any initialization before coprocessor test |
| 9C |
Required initialization before coprocessor is over. Going to initialize the coprocessor next |
| 9D |
Coprocessor initialized. Going to do any initialization after coprocessor test |
| 9E |
Initialization after coprocessor test is complete. Going to check extended keyboard, keyboard ID and num-lock |
| A2 |
Going to display and soft errors |
| A3 |
Soft error display complete. Going to set keyboard typmatic rate |
| A4 |
Keyboard typmatic rate set. To program memory wait states |
| A7 |
NMI and parity enabled. Going to do any initialization required before giving control to optional ROM at E000 |
| A8 |
Initialization before E000 ROM control over. E000 ROM to get control next |
| A9 |
Returned from E000 ROM control. Going to do any initialization required after E000 optional ROM control |
| AA |
Initialization after E000 optional ROM control is over. Going to display the system configuration |
| AB |
Put INT13 module runtime image to shadow |
| AC |
Generate MP for multiprocessor support (if present) |
| AD |
Put CGA INT10 module (if present) in shadow |
| AE |
Uncompress SMBIOS module and init SMBIOS code and form the runtime SMBIOS image in shadow |
| B1 |
Going to copy any code to specific area |
| 00 |
Copying of code to specific area done. Going to give control to INT19 boot loader |
