Intel 386 User Manual

Intel386™ EX EMBEDDED MICROPROCESSOR USER’S MANUAL
E-2
Wait states:
Wait states add 1 clock per wait state to instruction execution for each data access.
Table E-1 lists the instructions with their formats and execution times. The description of the
notes for Table E-1 begins on page E-20. See “Instruction Encoding” on page E-22 for the defi-
nition of the terms used in this table.
Table E-1. Instruction Set Summary (Sheet 1 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
GENERAL DATA TRANSFER
MOV = Move
register to
register/memory
1 0 0 0 1 0 0 w mod reg r/m
2/2 2/2* b h
register/memory to
register
1 0 0 0 1 0 1 w mod reg r/m
2/4 2/4* b h
immediate to
register/memory
1 1 0 0 0 1 1 w mod 0 0 0 r/m immediate data
2/2 2/2* b h
immediate to register
(short form)
1 0 1 1 w reg immediate data
22
memory to accumulator
(short form)
1 0 1 0 0 0 0 w full displacement
4* 4* b h
accumulator to memory
(short form)
1 0 1 0 0 0 1 w full displacement
2* 2* b h
register memory to
segment register
1 0 0 0 1 1 1 0 mod sreg3 r/m
2/5 22/23 b h, i, j
segment register to
register/memory
1 0 0 0 1 1 0 0 mod sreg3 r/m
2/2 2/2 b h
MOVSX = Move with sign extension
register from
register/memory
0 0 0 0 1 1 1 1 1 0 1 1 1 1 1 w mod reg r/m
3/6* 3/6* b h
MOVZX = Move with zero extension
register from
register/memory
0 0 0 0 1 1 1 1 1 0 1 1 0 1 1 w mod reg r/m
3/6* 3/6* b h
PUSH = Push
register/memory 1 1 1 1 1 1 1 1 mod 1 1 0 r/m 5/7* 7/9* b h
register (short form) 0 1 0 1 0 reg 24bh
segment register (ES,
CS, SS, or DS)
(short form)
000 sreg2 110
24bh
segment register (ES,
CS, SS, or DS, FS or
GS)
0 0 0 0 1 1 1 1 10 sreg3 000
24bh

Intel 386 Specifications

General

Brand	Intel
Model	386
Category	Computer Hardware
Language	English