GA-586AL
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46
Setup shadow RAM - Enable shadow according to Setup.
F
Test DMA Controller 0
BIOS checksum test.
Keyboard detect and initialization.
10
Test DMA Controller 1
11
Test DMA Page
registers
Test DMA Page Registers.
12-13
Reserved
14
Test Timer Counter 2
Test 8254 Timer 0 Counter 2.
15
Test 8259-1 Mask Bits
Verify 8259 Channel 1 masked interrupts by alternately turning
off and on the interrupt lines.
16
Test 8259-2 Mask Bits
Verify 8259 Channel 2 masked interrupts by alternately turning
off and on the interrupt lines.
17
Test Stuck 8259's
Interrupt Bits
Turn off interrupts then verify no interrupt mask register is on.
18
Test 8259 Interrupt
Functionality
Force an interrupt and verify the interrupt occurred.
19
Test Stuck NMI Bits
(Parity/IO Check)
Verify NMI can be cleared.
1A
Display CPU clock.
1B-1E
Reserved
1F
Set EISA Mode
If EISA non-volatile memory checksum is good, execute EISA
initialization. If not, execute ISA tests an clear EISA mode flag.
Test EISA Configuration Memory Integrity (checksum &
communication interface).
20
Enable Slot 0
Initialize slot 0 (System Board).
21-2F
Enable Slots 1-15
Initialize slot 1 through 15.
30
Size Base and
Extended Memory
Size base memory from 256 K to 640 K extended memory
above 1 MB.
31
Test Base and
Extended Memory
Test base memory from 256 K to 640 K and extended memory
above 1 MB using various patterns.
F
This will be skipped in EISA mode and can be "skipped"
with ESC key in ISA mode.
32
Test EISA Extended
Memory
If EISA Mode flag is set then test EISA memory found in slots
initialization.
F
This will be skipped in ISA mode and can be "skipped" with
ESC key in EISA mode.
33-3B
Reserved
3C
Setup Enabled
3D
Initialize & Install
Mouse
Detect if mouse is present, initialize mouse, install interrupt
vectors.
3E
Setup Cache Controller
Initialize cache controller.
3F
Reserved
BF
Chipset Initialization
Program chipset registers with Setup values.
40
Display virus protest disable or enable.
41
Initialize Floppy Drive &
Controller
Initialize floppy disk drive controller and any drives.
42
Initialize Hard Drive &
Controller
Initialize hard drive controller and any drives.
43
Detect & Initialize
Serial/Parallel Ports
Initialize any serial and parallel ports (also game port).
44
Reserved
45
Detect & Initialize Math
Coprocessor
Initialize math coprocessor.
46
Reserved
47
Reserved
48-4D
Reserved
4E
Manufacturing POST
Loop or Display
Reboot if Manufacturing POST Loop pin is set. Otherwise
display any messages (i.e., any non-fatal errors that were