NEC MH4500 manual Set key click if enabled

		POST Tests
Code	Beeps	POST Routine Description
54		Set key click if enabled
56		Enable keyboard
58	2-2-3-1	Test for unexpected interrupts
5A		Display prompt “Press F2 to enter SETUP”
5C		Test RAM between 512 and 640K
60		Test extended memory
62		Test extended memory address lines
64		Jump to User Patch1
66		Configure advanced cache registers
68		Enable external and CPU caches
6A		Display external cache size
6C		Display shadow message
6E		Display non-disposable segments
70		Display error messages
72		Check for configuration errors
74		Test real-time clock
76		Check for keyboard errors
7A		Test for lock key on.
7C		Set up hardware interrupt vectors
7D		Intelligent system monitoring
7E		Test coprocessor if present
80		Detect and install external RS232 ports
82		Detect and install external parallel ports
85		Initialize PC-compatible PnP ISA devices
86		Reinitialize onboard I/O ports
88		Initialize BIOS Data Area
8A		Initialize Extended BIOS Data Area
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

Solving Problems 5-19