80C286 datasheet(61/65 Pages) RENESAS

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80C286

FN2947 Rev.3.00

Page 61 of 65

January 28, 2008

JNO = Jump on Not Over-

flow

01110001 disp

7 + m or

7 + m or 3

JNS = Jump on Not Sign

01111001 disp

7 + m or

7 + m or 3

LOOP Loop CX Times

11100010 disp

8 + m or

8 + m or 4

LOOPZ/LOOPE

Loop

While Zero/Equal

11100001 disp

8 + m or

8 + m or 4

LOOPNZ/LOOPNE = Loop

While Not Zero/Equal

11100000 disp

8 + m or

8 + m or 4

JCXZ = Jump on CX Zero

11100011 disp

8 + m or

8 + m or 4

ENTER = Enter Procedure 11001000 data-low

data-high L

2, 8

8, 9

L = 0

2, 8

8, 9

L = 1

2, 8

8, 9

L > 1

16 + 4(L -

16 + 4(L - 1) 2, 8

8, 9

LEAVE = Leave Procedure 11001001

INT = Interrupt

Type Specified

11001101 type

23 + m

2, 7, 8

Type 3

11001100

23 + m

2, 7, 8

lNTO = Interrupt on Over-

flow

11001110

24 + m or

(3 if no

interrupt)

(3 if no

interrupt)

2, 6, 8

Protected Mode Only

Via Interrupt or Trap

Gate to Same Privilege

Level

40 + m

7, 8, 11, 12,

Via Interrupt or Trap

Gate to Fit Different

Pnvilege Level

78 + m

7, 8, 11, 12,

Via Task Gate

167 + m

7, 8, 11, 12,

IRET Interrupt Return

11001111

17 + m

31 + m

2, 4

8, 9, 11,

12, 15, 18

80C286 Instruction Set Summary (Continued)

FUNCTION

FORMAT

CLOCK COUNT

COMMENTS

REAL

ADDRES

MODE

PRO-

TECTED

VIRTUAL

ADDRESS

MODE

REAL

ADDRES

MODE

PRO-

TECTED

VIRTUAL

ADDRESS

MODE

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