Intel iAPX 86/88 User Manual page 45

8086/8088
CPU
Table 1-16 Instruction Set Reference Data (continued)
INT
~
INT interrupt-type
Flags
OOITSZAPC
Interrupt
00
Operands
Clocks Transfers· Bytes Coding Example
mmed 8 (type
=
3) 52(45) 5
1 INT3
immed 8 (type"* 3)
52(47) 5
2 INT67
INTRt
IINTR (external maskable interrupt)
Flags
OOITSZAPC
Interrupt if INTER and IF
=
1 00
Operands Clocks Transfers· Bytes Coding Example
(no operands) 61 7 N/A N/A
INTO
I INTO (no operands)
Flags
OOITSZAPC
Interrupt if overflow 00
Operands
Clocks
Transfers·
Bytes
Coding Example
(no operands)
53 or 5
1 INTO
4(48 or 4)
IRET
IIRET (no operands)
00 I TSZAPC
Interrupt Return
Flags R R R R R R R R R
Operands Clocks Transfers· Bytes Coding Example
(no operands) 32(28) 3 1 IRET
JA/JNBE
I
JA/JNBE short-label
Flags
OOITSZAPC
Jump if above/Jump if not below nor equal
Operands Clocks Transfers· Bytes Coding Example
Short-label
16 or
-
2 JAABOVE
4(13 or 4)
JAE/JNB
I JAE/JNB short-label
Flags
00 I TSZAPC
Jump if above or equal/Jump if not below
Operands Clocks Transfers· Bytes Coding Example
short-label 16 or
-
2 JAE ABOVE_EQUAL
4(13 or 4)
JB/JNAE
I JB/JNAE
Flags
00 I TSZAPC
Jump if below/Jump if not above nor equal
Operands Clocks Ti'ansfers· Bytes Coding Example
short-label 16 or
-
2 JB BELOW
4(13 or 4)
JBE/JNA
I JBE/JNA short-label
Flags
OOITSZAPC
Jump if below or equal/Jump if not above
Operands Clocks Transfers·
Bytes
Coding Example
short-label 16 or
-
2 JNA NOT -ABOVE
4(13 or 4)
'For the 8086 (80186) add four clocks for each 16-bit word transfer with an odd address. For the 8088 (80188) add four clocks for each 16-bit word
transfer.
tlNTR is not an instruction, it is included in table 1-16 only for timing information.
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