Intel 386 User Manual

E-11
INSTRUCTION SET SUMMARY
Via call gate to different privilege level (no parameters) 102 + m h, j, k, r
Via call gate to different privilege level (x parameters) 110+8x+
m
h, j, k, r
From 286 task to 286 TSS h, j, k, r
From 286 task to Intel386 SX CPU TSS h, j, k, r
From 286 task to virtual 8086 task (Intel386 SX CPU TSS) h, j, k, r
From Intel386 SX CPU task to 286 TSS h, j, k, r
From Intel386 SX CPU task to Intel386 SX CPU TSS 399 h, j, k, r
From Intel386 SX CPU task to Virtual 8086 task (Intel386 SX CPU TSS) h, j, k, r
JMP = Unconditional jump
short 1 1 1 0 1 0 1 1 8-bit displacement 7 + m 7 + m r
direct within segment 1 1 1 0 1 0 0 1 full displacement 7 + m 7 + m r
reg/memory indirect
within segment
1 1 1 1 1 1 1 1 mod 1 0 0 r/m
9 + m/
14 + m
9 + m/
14 + m
b h, r
direct intersegment 1 1 1 0 1 0 1 0 unsigned full offset, selector 16 + m 31 + m j, k, r
Protected mode only (direct intersegment)
Via call gate to same privilege level 53 + m h, j, k, r
From 286 task to 286 TSS h, j, k, r
From 286 task to Intel386 SX CPU TSS h, j, k, r
From 286 task to virtual 8086 task (Intel386 SX CPU TSS) h, j, k, r
From Intel386 SX CPU task to 286 TSS h, j, k, r
From Intel386 SX CPU task to Intel386 SX CPU TSS h, j, k, r
From Intel386 SX CPU task to Virtual 8086 task (Intel386 SX CPU TSS) 395 h, j, k, r
indirect intersegment 1 1 1 1 1 1 1 1 mod 1 0 1 r/m 17 + m 31 + m b h, j, k, r
Protected mode only (indirect intersegment)
Via call gate to same privilege level 49 + m h, j, k, r
From 286 task to 286 TSS h, j, k, r
From 286 task to Intel386 SX CPU TSS h, j, k, r
From 286 task to virtual 8086 task (Intel386 SX CPU TSS) h, j, k, r
From Intel386 SX CPU task to 286 TSS h, j, k, r
From Intel386 SX CPU task to Intel386 SX CPU TSS 328 h, j, k, r
From Intel386 SX CPU task to Virtual 8086 task (Intel386 SX CPU TSS) h, j, k, r
RET = Return from CALL
within segment 1 1 0 0 0 0 1 1 12 + m b g, h, r
Table E-1. Instruction Set Summary (Sheet 10 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

Intel 386 Specifications

General

Architecture	x86
Clock Speed	12 MHz to 40 MHz
Transistor Count	275, 000
Data Bus Width	32-bit
Address Bus Width	32-bit
Instruction Set	x86
Introduced	1985
Maximum Memory	4 GB
Operating Modes	Real mode, Protected mode, Virtual 8086 mode
MMU	Yes
Voltage	5V
Model	Intel 386
Package	PGA
Process	1.5 μm to 1 μm