User's Manual

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
2-26