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LEDS Status MSB to LSB
Visible colors: FFRF (Off Off Red Off)
Bit in the lower nibble is high:
POST CODE 02--- BIT values (MSB to LSB) 0000 0010
I I
Upper Nibble Lower Nibble
LEDS Status MSB to LSB
Visible colors: FFGF (Off Off Green Off)
Bits in the same location are both high:
POST CODE 33 --- BIT values (MSB to LSB) 0011 0011
I I
Upper Nibble Lower Nibble
LEDS Status MSB to LSB
Visible colors: FFOO (Off Off Orange Orange)
The following table is provided to show the most important POST CODES:
POST CODE LED COLORS (MSB->LSB) DESCRIPTION
E1 RRRG
MEMORY SIZE RAM
E9 ORRG
LOAD BB FROM FLOPPY
08 GFFF
CPU INIT
38 GFRR
USB INIT
0C GGFF
KEYBOARD CONTLR TEST
2A GFOF
PCI INIT
2A GFOF
VIDEO
3A GFOR
MEMORY SIZE RAM
28 GFRF
OPTION ROM SCAN
00 FFFF
INT19 (SWITCHES TO OS)