Acer Network Device Altos R520 - Manual (Page 157)

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0xF8h A R R R Operating system has requested EFI
to close boot services (Exit Boot
Services has been called)
0xF9h A R R A Operating system has switched to
virtual address mode (Set Virtual
Address Map has been called)
0xFAh A R A R Operating system has requested
the system to reset (Reset System
has been called)
Pre-EFI Initialization Module (PEIM)/Recovery
0x30h OFF OFF R R Crisis recovery has been initiated
because of a user request
0x31h OFF OFF R A Crisis recovery has been initiated by
software (corrupt flash)
0x34h OFF G R R Loading crisis recovery capsule
0x35h OFF G R A Handing off control to the crisis
recovery capsule
0x3Fh G G A A Unable to complete crisis recovery.
Checkpoint
code
Diagnostic LED Decoder
Description G=Green, R=Red, A=Amber
MSB LSB