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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.
AMI
Award
Compaq
Error Code
-
16
(16)CH-2 timer test over.8254 CH-1 timer test to be complete. CMOS checksum/battery check
OK
(16)Test 8259-2 mask bits; Verify 8259 channel 2 masked interrupt by alternate
turning off and on the interrupt line. Setup Interrupt vectors.
(16)Battery power was lost.
Chips & Tech (16)Keyboard controller gate A20 failure.
Phoenix&Dell (16)BIOS ROM checksum.(Beep)=1
-
2
-
2
-
3.
Initialize
8259,
reset
Coprocessor.[Beep]=2-2-3 1st 64K RAM chip or data line failure-bit 6.
Error Code
-
17
AMI
Award
Compaq
(17)CH-1 timer test over.8254 CH-0 timer test to be completed. Monochrome mode
set.
(17)Test struck 8259's interrupt bits; Turn off interrupt then verify no interrupt mask register is
on. Setup video I/O operations.
(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.
(18)Timer initialize.
Error Code
-
18
ACER
AMI
AST
Award
Dell
Compaq
(18)CH-0 timer test over. About to start memory refresh. Color mode set.
(18)Testing Video memory.
(18)Test 8259 interrupt functionality; Force an interrupt and verify the interrupt occurred. Test
video memory.
(18)[Beep]= 2-3-1 1st 64K RAM chip or data line failure- bit 8
(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.
AMI
Award
Compaq
Error Code
-
19
(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
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
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
Award
Compaq
Error Code - 1A
(1A)Memory refresh line is toggling. Going to check 15 micro second ON/OFF
time. Return from optional video ROM. Optional video ROM control OK
(1A)Display CPU clock.8259 Interrupt controller, channel 2 mask bits test.
(1A)Initialize and test VDU adapter
s.
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.
AMI
Award
Error Code
-
1B
(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
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
Award
(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.
(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 Interr
upt Controller.(Beep)=1
-
2
-
4
-
1.Base 64K address test.
AMI
Compaq
Error Code
-
1D
(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
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