Table of Contents
Advertisement
Energy Star Compliant System Board
POST (hex)
F
Test DMA
controller 0
10
Test DMA
controller 1
11
Test DMA page
registers
12-13
Reserved
14
Test timer counter 2
15
Test 8259-1 mask
bits
16
Test 8259-2 mask
bits
17
Test stuck 8259's
interrupt bits
18
Test 8259 interrupt
functionality
19
Test stuck NMI
bits (Parity/IO check)
1A
1B-1E
Reserved
1F
Set EISA mode
B-3
Appendix B
Name
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).
Advertisement
Table of Contents
