Intel 386 User Manual
Page 647
Intel386™ EX EMBEDDED MICROPROCESSOR USER’S MANUAL
E-10
register/memory,
register
0 0 0 0 1 1 1 1
1 0 1 0 0 0 1 1
mod reg r/m
3/12*
3/12*
b
h
BTC = test bit and complement
register/memory,
immediate
0 0 0 0 1 1 1 1
1 0 1 1 1 0 1 0
mod 1 1 1 r/m
immed
8-bit data
6/8*
6/8*
b
h
register/memory,
register
0 0 0 0 1 1 1 1
1 0 1 1 1 0 1 1
mod reg r/m
6/13*
6/13*
b
h
BTR = test bit and reset
register/memory,
immediate
0 0 0 0 1 1 1 1
1 0 1 1 1 0 1 0
mod 1 1 0 r/m
immed
8-bit data
6/8*
6/8*
b
h
register/memory,
register
0 0 0 0 1 1 1 1
1 0 1 1 0 0 1 1
mod reg r/m
6/13*
6/13*
b
h
BTS = test bit and set
register/memory,
immediate
0 0 0 0 1 1 1 1
1 0 1 1 1 0 1 0
mod 1 0 1r/m
immed
8-bit data
6/8*
6/8*
b
h
register/memory,
register
0 0 0 0 1 1 1 1
1 0 1 0 1 0 1 1
mod reg r/m
6/13*
6/13*
b
h
CONTROL TRANSFER
CALL = Call
direct within segment
1 1 1 0 1 0 0 0
full displacement
7 + m*
9 + m*
b
r
reg/memory indirect
within segment
1 1 1 1 1 1 1 1
mod 0 1 0 r/m
7 + m*/
10 + m*
9 + m*/
12 + m*
b
h, r
direct intersegment
1 0 0 1 1 0 1 0
unsigned full offset, selector
17 + m*
42 + m*
b
j, k, r
Protected mode only (direct intersegment)
Via call gate to same privilege level
64 + m
h, j, k, r
Via call gate to different privilege level (no parameters)
98 + m
h, j, k, r
Via call gate to different privilege level (x parameters)
106+8x+
m
h, j, k, r
From 286 task to 286 TSS
285
h, j, k, r
From 286 task to Intel386 SX CPU TSS
310
h, j, k, r
From 286 task to virtual 8086 task (Intel386 SX CPU TSS)
229
h, j, k, r
From Intel386 SX CPU task to 286 TSS
285
h, j, k, r
From Intel386 SX CPU task to Intel386 SX CPU TSS
392
h, j, k, r
From Intel386 SX CPU task to Virtual 8086 task (Intel386 SX CPU TSS)
309
h, j, k, r
indirect intersegment
1 1 1 1 1 1 1 1
mod 0 1 1 r/m
30 + m
46 + m
b
h, j, k, r
Protected mode only (indirect intersegment)
Via call gate to same privilege level
68 + m
h, j, k, r
Table E-1. Instruction Set Summary (Sheet 9 of 19)
Instruction
Format
Clock Count
Notes
Real
Ad-
dress
Mode
or
Virtual
8086
Mode
Pro-
tected
Virtual
Ad-
dress
Mode
Real
Ad-
dress
Mode
or
Virtual
8086
Mode
Pro-
tected
Virtual
Ad-
dress
Mode