Intel 386

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