Compaq Mega-Post manual Error Code 1B, Error Code 1C, Error Code 1D, Error Code 1E

					Appendix A
Chips & Tech (15)VERW/VERR failure.
Phoenix&Dell (15)[Beep]=2-2-2 1st 64K RAM chip or data line failure-bit 5.
			Error Code - 16
AMI	(16)CH-2 timer test over.8254 CH-1 timer test to be complete. CMOS checksum/battery check
	OK
Award	(16)Test 8259-2 mask bits; Verify 8259 channel 2 masked interrupt by alternate
	turning off and on the interrupt line. Setup Interrupt vectors.
Compaq	(16)Battery power was lost.
Chips & Tech (16)Keyboard controller gate A20 failure.				Initialize	8259,	reset
Phoenix&Dell (16)BIOS		ROM	checksum.(Beep)=1-2-2-3.
	Coprocessor.[Beep]=2-2-3 1st 64K RAM chip or data line failure-bit 6.
			Error Code - 17
AMI	(17)CH-1 timer test over.8254 CH-0 timer test to be completed. Monochrome mode
	set.
Award	(17)Test struck 8259's interrupt bits; Turn off interrupt then verify no interrupt mask register is
	on. Setup video I/O operations.
Compaq	(17)Cler CMOS-DIAG
Phoenix&Dell (17)Initialize cache before memory auto-size.[Beep] =2-2-4 1st 64K RAM chip or
	data line failure-bit 7.
ACER			Error Code - 18
	(18)Timer initialize.
AMI	(18)CH-0 timer test over. About to start memory refresh. Color mode set.
AST	(18)Testing Video memory.
Award	(18)Test 8259 interrupt functionality; Force an interrupt and verify the interrupt occurred. Test
Dell	video memory.
	(18)[Beep]= 2-3-1 1st 64K RAM chip or data line failure- bit 8
Compaq	(18)Test base memory(first 128K)
Chips & Tech (18)Shutdown during memory test.
Phoenix&Dell (18)8254 timer initialization.(Beep)=1-2-3-1. Test 8259 interrupt controllers
	registers.[Beep]=2-3-1 1st 64K RAM chip or data line failure-bit 8.
			Error Code - 19
AMI	(19)82 timer test over. Memory refresh test to be done next. About to look for optional video
	ROM at segment C000 and give control to the optional video ROM
Award	if present.
	(19)Test 8259 functionality. Test stuck NON-Maskable Interrupt bits(Parity/I/O check);Verify
	NMI can be cleared. 8259 Interrupt controller, channel 1 mask bits
Compaq	test.
	(19)Clear and initialize base memory.
Phoenix&Dell (19)check memory[Beep]=2-3-2 1st 64K RAM chip or data line failure-bit 9.
AMI	Error Code - 1A
	(1A)Memory refresh line is toggling. Going to check 15 micro second ON/OFF
Award	time. Return from optional video ROM. Optional video ROM control OK
	(1A)Display CPU clock.8259 Interrupt controller, channel 2 mask bits test.
Compaq	(1A)Initialize and test VDU adapters.
Chips & Tech (1A)Copyright checksum errors.
Phoenix&Dell (1A)8237		DMA	controller initialization.(Beep)=1-2-3-3.	Verify	refresh is
	occurring.[Beep]=2-3-3 1st 64K RAM chip or data line failure-bit A.
			Error Code - 1B
AMI	(1B)Memory refresh period 30 micro second test complete. Base 64K memory test
	about to start. Shadow RAM enable /disable completed. Display memory read/write
Award	test OK.
	(1B)Test CMOS battery status. Test the system ROM.
Chips & Tech (1b)Shutdown during memory sizing.
Phoenix&Dell (1B)[Beep]=2-4-1 1st 64K RAM chip or data line failure- bit B.
			Error Code - 1C
ACER	(1C)Memory refresh.
AMI	(1C)Display memory read/write test for main display type as set in the CMOS setup
	program over. Display memory read/write test for alternate display OK.
Award	(1C)Test CMOS RAM checksum. Test CMOS.
Chips & Tech (1C)Chip-Set initialization.
Phoenix&Dell (1C)[Beep]=2-4-1 1st 64K RAM chip or data line failure- bit C.Reset
	Programmable Interrupt Controller.(Beep)=1-2 -4-1.Base 64K address test.
			Error Code - 1D
AMI	(1D)Display memory read/write test for alternate display type complete if main
	display memory read/write test returns error. Video retrace check OK. Set configuration from
Compaq	CMOS.
	(1D)Test DMA controller and page registers.
Phoenix&Dell (1D)[Beep]=2-4-2 1st 64K RAM chip or data line failure- bit D
			Error Code - 1E
			9