BC Series BIOS POST Codes

Code	LED Display	Description
C2		NMI is disabled. Power on delay is starting.
C5		Power on delay is completed. Disabling cache if any.
C6		Calculating the ROM BIOS checksum.
C7		ROM BIOS checksum passed. CMOS shutdown register test is to be performed next.
C8		CMOS shutdown register test is complete. The CMOS checksum calculation to be done next.
CA		CMOS checksum calculation is done, CMOS DIAG byte is written. Next, the CMOS status register is initialized for Date and Time.
CB		CMOS initialization is complete. Any initialization required before the keyboard BAT is performed next.
CD		A BAT command to the keyboard controller is to be issued.
CE		The keyboard BAT result was verified. Any initialization required after the keyboard controller BAT is performed next.
CF		Initialization after the keyboard controller BAT is complete. A keyboard controller command byte code is to be written next.
D0		The system configuration is displayed.
D1		The keyboard controller command byte has been written. To check the INS key when pressed during power on.
D2		Check of INS key when pressed during power on was done. To disable DMA and Interrupt controllers.
D3		DMA controller #1 and #2 disabled. Interrupt controller #1 and #2 disabled. Chipset initialization and auto memory detection about to begin.
D4		Chipset initialization and auto memory detection are done. To decompress the RUNTIME code.
D5		The RUNTIME code is decompressed.
DD		Transferring control to decompressed code in shadow RAM at F000:FFF0.