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3C Test Timer Counter 2 Test 8254 Timer 0 Counter 2.
3D Reserved
3E Test 8259-1 Mask
Bits
Verify 8259 Channel 1 masked interrupts by
alternately turning off
and on the interrupt lines.
3F Reserved
40 Test 8259-2 Mask
Bits
Verify 8259 Channel 2 masked interrupts by
alternately turning off
and on the interrupt lines.
41 Reserved
42 Reserved
43 Test Stuck8259's
Interrupt Bits
Test 8259 Interrupt
Functionality
Turn off interrupts then verify no
interrupt mask register is on.
Force an interrupt and verify the interrupt
occurred.
44 Reserved
45 Reserved
46 Reserved
47 Set EISA Mode If EISA non-volatile memory checksum is
good, execute EISA initialization.
If not, execute ISA tests an clear
EISA mode flag.
48 Reserved
49 Size Base and
Extended Memory
Size base memory from 256K to 640K and
extended memory above 1MB.
4A Reserved
4B Reserved
4C Reserved
4D Reserved
4E Test Base and
Extended Memory
Test base memory from 256K to 640K and
extended memory above 1MB using
various patterns.
NOTE: This test is skipped in EISA
mode and can be skipped with ESC key
in ISA mode.
4F Reserved
50 USB init Initialize USB controller
51 Reserved
52 Memory Test Test all memory of memory above 1MB
using Virtual 8086 mode,
page mode and clear the memory
53 Reserved
54 Reserved
55 CPU display Detect CPU speed and display
CPU vendor specific version string
and turn on all necessary CPU features
56 Reserved
57 PnP Init Display PnP logo and PnP early init
58 Reserved
59 Setup Virus Protect Setup virus protect according to Setup
5A Reserved
5B Awdflash Load If required, will auto load
Awdflash.exe in POST
5C Reserved
5D Onboard I/O Init Initializing onboard superIO
5E Reserved
5F Reserved
60 Setup enable Display setup message and enable setup
functions
61 Reserved
62 Reserved
63 Initialize & Install
Mouse
Detect if mouse is present, initialize
mouse, install interrupt