EISA/PCI System Board
POST (hex)
F
10
11
12-13
14
15
16
17
18
19
1A
1B-1E
1F
Name
Test DMA
controller 0
Test DMA
controller 1
Test DMA page
registers
Reserved
Test timer counter 2
Test 8259-1 mask
bits
Test 8259-2 mask
bits
Test stuck 8259's
interrupt bits
Test 8259 interrupt
functionality
Test stuck NMI
bits (Parity/IO check)
Reserved
Set EISA mode
Description
BIOS checksum test.
Keyboard detect and initialization.
Test DMA page registers.
Test 8254 timer 0 counter 2.
Verify 8259 channel 1 masked interrupts by
alternately turning off and on the interrupt
lines.
Verify 8259 channel 2 masked interrupts by
alternately turning off and on the interrupt
lines.
Turn off interrupts then verify no interrupt
mask register is on.
Force an interrupt and verify the interrupt
occurred.
Verify NMI can be cleared.
Display CPU clock.
If EISA non-volatile memory checksum is
good, execute EISA initialization. If not,
execute ISA tests and clear EISA mode flag.
Test EISA Configuration Memory Integrity
(checksum & communication interface).
B-3
u
Appendix B
