Intel 80287, 80286 manual Interrupt Vector Assignments Real Address Mode

80286 BASE ARCHITECTURE

Table 2-4. 80286 Interrupt Vector Assignments (Real Address Mode)

	Interupt	Related	Return Address
Function			Before Instruction
	Number	Instructions
			Causing Exception?
Divide error exception	0	DIV,IDIV	Yes
Single step interrupt	1	All
NMI interrupt	2	All
Breakpoint interrupt	3	INT
INTO detected overflow exception	4	INTO	No
BOUND range exceeded exception	5	BOUND	Yes
Invalid opcode exception	6	Any undefined	Yes
		opcode
Processor extension not available exception	7	ESC or WAIT	Yes
Interrupt table limit too small exception	8	INT vector is not	Yes
		within table limit
Processor extension segment overrun	9	ESC with memory	No
interrupt		operand extending
		beyond offset
		FFFF(H)
Reserved	10-12
Segment overrun exception	13	Word memory	Yes
		reference with
		offset = FFFF(H) or
		an attempt to
		execute past the
		end of a segment
Reserved	14, 15
Processor extension error interrupt	15	ESC or \"}.A.!T
Reserved	17-31
User defined	32-255

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