BIOS POST Codes - Page 5 of 6


Code LED Display Description
90h Floppy drive configuration has completed. Hard disk configuration is next.
91h The hard disk presence test has completed. Hard disk configuration is next.
92h Hard disk configuration has completed. Checking the BIOS ROM data area next.
93h The BIOS ROM data area check was partially completed. The entire BIOS ROM data area check is completed next.
94h The BIOS ROM data area check has fully completed. Setting the base and extended memory sizes next.
95h The memory size has been adjusted because of mouse support and hard disk type 47. Verifying from display memory next.
96h Returned after verifying from display memory. Initializing before C8000h adapter ROM control next.
97h Any initialization that had to be done before control is passed to the adapter ROM at C8000h option has been completed. The adapter ROM check and control test is next. Relinquishing control to adapter ROM at C8000h.
98h The adapter ROM control test has been done. About to do required processing after the adapter ROM returns control.
99h Any initialization for the option ROM test was done. Configuring the timer data area and the parallel printer base address next.
9Ah Set the timer data area and the parallel printer base address. Setting the RS-232 base address next.
9Bh Set the RS-232 base address. Initializing before the coprocessor test next.
9Ch The required initialization before the coprocessor test has been done. Initializing the coprocessor next.
9Dh The coprocessor has been initialized. Performing any initialization after the coprocessor test next.
9Eh Initialization after the coprocessor test is completed. Checking the Extended Keyboard, Keyboard ID and Num Lock keyboard settings next.
9Fh The Extended Keyboard flags have been checked, the Keyboard ID flag set, and Num Lock is set On or Off as specified. The Keyboard ID command is issued next.
A0h The Keyboard ID command has been issued. The Keyboard ID flag reset is next.
A1h The Keyboard ID flag reset has been done. The cache memory tests follow.
A2h The cache memory test has been done. Displaying any soft errors next.
A3h Soft error display is complete. Setting the keyboard typematic rate next.
A4h The keyboard typematic rate is set. Programming the memory wait states next.
A5h Memory wait states programming is done. The screen is cleared next.
A6h The screen has been cleared. Enabling parity and NMIs next.
A7h NMIs and parity have been enabled. Performing any initialization required before passing control to the adapter ROM at E0000h next.
A8h Initialization before E0000h adapter ROM control has been done. The E000h adapter ROM gets control next.
A9h Returned from E0000h adapter ROM control. Performing any initialization required after E0000h adapter ROM control next.
AAh Initialization after E0000h adapter ROM control has been done. Displaying the system configuration next.
 

Next Page        Previous Page


Systems | Circuit Boards | Other Products | Software | Hardware Identifier
Other Vendors | Technical Notes | Downloads | Search | Support Home Page

This document, and all Web Site contents, Copyright ©
2000 by Cubix Corp., Carson City, NV, USA.