94 Intel Server Board SCB2 Product Guide
Table 11. Post Codes (continued)
Diagnostic LED Decoder
G=Green, R=Red, A=Amber
Post
Code
MSB LSB
Description
39h G Off R A Displaying bus initialization error messages.
3Ah G Off A R
Display Setup Message: The new cursor position has been read
and saved. Displaying the Hit Setup message next.
40h Off R Off Off Ensure Timer Keyboard Interrupts are on.
4Bh G R G G
Memory Test: The amount of memory above 8 MB has been found
and verified. Checking for a soft reset and clearing the memory
below 8 MB for the soft reset next. If this is a power-on situation,
going to checkpoint 4Eh next.
57h Off A G A Chipset hook after memory size
53h Off R A A Display processor cache size.
54h Off A Off R Disable parity and nmi reporting.
60h Off R R Off
Test 8237 DMA Controller: The DMA page register test passed.
Performing the DMA Controller 1 base register test next
65h Off A R G
Init 8237 DMA Controller: The DMA controller 2 base register test
passed. Programming DMA controllers 1 and 2 next.
7Fh G A A A
Extended NMI enable: Extended NMI source enabling is in
progress.
80h R Off Off Off
Enable Mouse and Keyboard: The keyboard test has started.
Clearing the output buffer and checking for stuck keys. Issuing the
keyboard reset command next
81h R Off Off G
Keyboard Interface Test: A keyboard reset error or stuck key was
found. Issuing the keyboard controller interface test command next.
82h R Off G Off
Check Stuck Key Enable Keyboard: The keyboard controller
interface test completed. Writing the command byte and initializing
the circular buffer next.
83h R Off G G
Disable parity NMI: The command byte was written and global data
initialization has completed. Checking for a locked key next
84h R G Off Off
Verify RAM Size: Checking for a memory size mismatch with
CMOS RAM data next
84h R G Off Off Check ATA Cable Type presence of ATAPI devices
84h R G Off Off Display Keyboard Message
16h Off G G R Display IDE mass storage devices.
17h Off G G A Display USB mass storage devices.
85h R G Off G Report the first set of POST Errors To Error Manager.
86h R G G Off
Boot Password Check: The password was checked. Performing any
required programming before Setup next.
8Dh A G Off G OEM Patch 9
8Dh A G Off G Set Printer RS-232 Timeout
8Dh A G Off G Init FDD Devices: Resetting the hard disk controller next.
95h R G Off A Lock out PS/2 keyboard/mouse if unattended start is enabled.
92h R Off G R Option ROM Scan
98h A Off Off R
Init Boot Devices: The adapter ROM had control and has now
returned control to BIOS POST. Performing any required
processing after the option ROM returned control.
continued
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