Intel Intel P35/P31 Socket LGA775 Processor Mainboard, 88ENEP3S00 user manual

P3 Series		User's Manual
9	Early Cache Initialization	Cyrix CPU initialization. Cache initialization.
A	Setup Interrupt Vector	Initialize first 120 interrup tvectors with SPURIOUS_INT_HDLR
	Table	and initialize INT 00h-1Fh according to INT_TBL.
B	Test CMOS RAM	Test CMOS RAM Checksum, if bad, or insert key pressed,
	Checksum	load defaults.
C	Initialize keyboard	Detect type of keyboard controller.
	(optional)	Set NUM_LOCK status.
D	Initialize Video	Detect CPU clock. Read CMOS location 14h to find out type
	Interface	of video in use. Detect and Initialize Video Adapter.
E	Test Video Memory	Test video memory, write sign-on message to screen.
		Setup shadow RAM - Enable shadow according to Setup.

FTest 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	Turn off interrupts then verify no interrupt mask register is on.
	Interrupt Bits
18	Test 8259 Interrupt	Force an interrupt and verify the interrupt occurred.
	Functionality
19	Test Stuck NMI Bits	Verify NMI can be cleared.
	(Parity/IO Check)
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).

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