NEC 120Mf, 5800 manual INT19

4-11 Troubleshooting

CP	Reason
8A	Initialize Extended BIOS Data Area
8B	Test and initialize PS/S mouse
8C	Initialize floppy controller
90	Initialize hard disk controller
91	Initialize local bus hard disk controller
92	Jump to UserPatch2
93	Build MPTABLE for multi-processor boards
94	Disable A20 address line
95	Install CD-ROM for boot
96	Clear huge ES segment register
97	Fixup Multi Processor table
98	Search for option ROMs. One long, two short beeps on checksum failure
99	Check for SMART Drive
9A	Shadow option ROMs
9C	Set up Power Management
9D	Initialize security engine
9E	Enable hardware interrupts
A0	Set time of day
A2	Check key lock
A4	Initialize typematic rate
A8	Erase F2 prompt
A9	Prepare boot
AA	Scan for F2 key stroke
AC	Print bottom message
AE	Clear the POST flag
B0	Check POST Error
B2	POST End
B4	Beep once
B5	End the Quiet Boot
B6	Check Password
B7	Configuration ACPI
B9	Prepare boot
BA	DMI Configuration
BC	Clear parity checkers
BD	Display Boot Menu
BE	Clear Screen
C0	INT19
C1	Initialize the POST Error Manager
C2	Invoke End of POST Error Logging
C3	Invoke End of POST Error Message Display
C6	Initialize Console Redirection
C7	Control Console Port
CD	Initialize Console Redirection
D1	Initialize BIOS stack
D3	Find an A20-agnostic place in memory