Intel Desktop Board D865PCD Technical Product Specification
Table 66. Runtime Code Uncompressed in F000 Shadow RAM
Code
03
05
06
07
08
0B
0C
0E
0F
10
11
12
13
14
19
1A
23
24
25
27
28
2A
2B
2C
2D
2E
2F
30
31
32
34
37
38
39
3A
Description of POST Operation
NMI is Disabled. To check soft
BIOS stack set. Going to disable cache if any.
POST code to be uncompressed.
CPU init and CPU data area init to be done.
CMOS checksum calculation to be done next.
Any initialization before keyboard BAT to be done next.
KB controller I/B free. To issue the BAT command to keyboard controller.
Any initialization after KB controller BAT to be done next.
Keyboard command byte to be written.
Going to issue
Going to check pressing of <INS>, <END> key during
To init CMOS if "Init CMOS in every boot" is set or <END> key is pressed. Going to disable DMA and Interrupt controllers.
Video display is disabled and
8254 timer test about to start.
About to start memory refresh test.
Memory Refresh line is toggling. Going to check 15 µs ON/OFF time.
To read 8042 input port and disable Megakey GreenPC feature. Make BIOS code segment writeable.
To do any setup before Int vector init.
Interrupt vector initialization to begin. To clear password if necessary.
Any initialization before setting video mode to be done.
Going for monochrome mode and color mode setting.
Different buses init (system, static, output devices) to start if present. (See Section 5.3 for details of different buses.)
To give control for any setup required before optional video ROM check.
To look for optional video ROM and give control.
To give control to do any processing after video ROM returns control.
If EGA/VGA not found then do display memory R/W test.
EGA/VGA not found. Display memory R/W test about to begin.
Display memory R/W test passed. About to look for the retrace checking.
Display memory R/W test or retrace checking failed. To do alternate Display memory R/W test.
Alternate Display memory R/W test passed. To look for the alternate display retrace checking.
Video display checking over. Display mode to be set next.
Display mode set. Going to display the
Different buses init (input, IPL, general devices) to start if present. (See Section 5.3 for details of different buses.)
Display different buses initialization error messages. (See Section 5.3 for details of different buses.)
New cursor position read and saved. To display the Hit <DEL> message.
continued
104
