Appendix C: LED Decoder
66 Intel
®
Server System H2000WP Family Service Guide
Checkpoint
Diagnostic LED Decoder
Description
1 = On, 0=Off
Upper Nibble
Lower Nibble
MSB
LSB
8h
4h
2h
1h
8h
4h
2h
1h
LED
#7
#6
#5
#4
#3
#2
#1
#0
0x59h
0 1 0 1 1 0 0 1 Reserved
for
USB
devices
ATA/ATAPI/SATA
0x5Ah
0 1 0 1 1 0 1 0 Resetting
SATA
bus
and
all
devices
0x5Bh
0 1 0 1 1 0 1 1 Detecting
the
presence
of
ATA
device
0x5Ch
0 1 0 1 1 1 0 0 Enable
SMART
if
supported
by
ATA
device
0x5Dh
0 1 0 1 1 1 0 1 Reserved
for
ATA
SMBUS
0x5Eh
0 1 0 1 1 1 1 0 Resetting
SMBUS
0x5Fh
0 1 0 1 1 1 1 1 Reserved
for
SMBUS
I/O Controller Hub
0x61h
0 1 1 0 0 0 0 1 Initializing
I/O
Controller
Hub
Super I/O
0x63h
0 1 1 0 0 0 1 1 Initializing
Super
I/O
Local Console
0x70h
0 1 1 1 0 0 0 0 Resetting
the
video
controller
(VGA)
0x71h
0 1 1 1 0 0 0 1 Disabling
the
video
controller
(VGA)
0x72h
0 1 1 1 0 0 1 0 Enabling
the
video
controller
(VGA)
0x73h
0 1 1 1 0 0 1 1 Reserved
for
video
controller
(VGA)
Remote Console
0x78h
0 1 1 1 1 0 0 0 Resetting
the
console
controller
0x79h
0 1 1 1 1 0 0 1 Disabling
the
console
controller
0x7Ah
0 1 1 1 1 0 1 0 Enabling
the
console
controller
0x7Bh
0 1 1 1 1 0 1 1 Reserved
for
console
controller
Keyboard (only USB)
0x90h
1 0 0 1 0 0 0 0 Resetting
the
keyboard
0x91h
1 0 0 1 0 0 0 1 Disabling
the
keyboard
0x92h
1 0 0 1 0 0 1 0 Detecting
the
presence
of
the
keyboard
0x93h
1 0 0 1 0 0 1 1 Enabling
the
keyboard
0x94h
1 0 0 1 0 1 0 0 Clearing
keyboard
input
buffer
0x96h
1 0 0 1 0 1 1 0 Reserved
for
keyboard
Mouse (only USB)
0x98h
1 0 0 1 0 0 1 0 Resetting
the
mouse
0x99h
1 0 0 1 0 0 1 1 Detecting
the
mouse
0x9Ah
1 0 0 1 0 1 1 0 Detecting
the
presence
of
mouse
0x9Bh
1 0 0 1 0 1 1 1 Enabling
the
mouse
0x9Ch
1 0 0 1 0 0 1 0 Reserved
for
mouse
Serial Port
0xA8h
1 0 1 0 1 0 0 0 Resetting
the
serial
port
0xA9h
1 0 1 0 1 0 0 1 Disabling
the
serial
port
0xAAh
1 0 1 0 1 0 1 0 Detecting
the
presence
of
the
serial
port
0xABh
1 0 1 0 1 0 1 1 Clearing
serial
port
buffer
