CBI/CGI Technical Reference
Chassis Plans A-7
PORT 80 CODES
(CONTINUED)Code Description
FC
FD
FF
Erasing flash ROM next.
Programming flash ROM next.
Flash ROM programming successful. Restarting system BIOS next.
Runtime code is uncompressed in F000 shadow RAM.
03
05
06
07
08
0A
0B
0C
0E
0F
10
11
12
13
14
19
1A
23
NMI is disabled. Checking for soft reset/power-on next.
BIOS stack has been built. Disabling cache memory next.
Uncompressing POST code next.
Initializing CPU and CPU data area next.
CMOS checksum calculation to be done next.
CMOS checksum calculation done. Initializing CMOS status register for date and
time next.
CMOS status register initialized. Next, performing any required initialization before
keyboard BAT command issued.
Keyboard controller input buffer free. Issuing BAT command to keyboard controller
next.
Keyboard controller BAT command result verified. Performing any necessa ry initial-
ization after keyboard controller BAT test next.
Initialization after keyboard controller BAT command test done. Keyboard command
byte to be written next.
Keyboard controller command byte is written. Issuing Pin 23, 24 blocking/unblocking
command next.
Checking if <End> or <Ins> keys were pressed during power-on next. Initializing
CMOS RAM if the “Initialize CMOS RAM in every boot” AMIBIOS POST option was
set in AMIBCP or the <End> key was pressed.
Disabling DMA controllers 1 and 2 and interrupt controllers 1 and 2 next.
Video display disabled and port B initialized. Initializing chipset next.
8254 timer test to begin next.
8254 timer test over. Starting memory refresh test next.
Memory refresh line is toggling. Checking 15 microsecond on/off time next.
Reading 8042 input port and disabling MEGAKEY Green PC feature next. Making
BIOS code segment writable and performing any necessary configuration before
initializing the interrupt vectors.