8086
Preceded by 9900, LSI-11, microNOVA, and
9940. Very popular because of the tremendous amount of support (both
hardware and software)
Project Manager: Jean Claude Cornet
The entrance of the 8086 into the processor market was prepared by means
of the "operation crush". This operation began with an
internal Intel - seminar lasting several days. It resulted in different
partial corporate targets to achieve a commercial crushing of the main
competitor Motorola. One partial target was to emphasize the strenghts
of the company e.f. superior overall system (8086 + math. coprocessor +
peripheral system) as well as a sophisticated customer service.
Operation crush resulted in 85 % market share of the overall 16-bit
microprocessor market. This success had been increased in the entrance
into the minicomputer market by means of the cooperation with IBM. The
8088 became the leading microprocessor of all personal computers.
In 1984 a law-suit between Intel and NEC sparked off regarding the
microcode of the 8086. In this verdict Intel won a
partial victory that also a microcode can be protected by
copyright. But concerning the 8086 Intel lost the argument since a lot of 8086 licences
existed (Fujitsu, Mitsubishi, NEC) without
especially marked copyrights. In the past Intel failed to claim these
rights. AMD has even been allowed to mark the chips with © AMD 1982 (see also AMD CPUs out of
collection, section 8088).
N-Channel depletion load silicon gate technology (HMOS); operates in both single processor and multiple processor configurations to achieve high performance levels; single 5 V power supply; the 8086 architecture became basis for all further Intel microprocessors and clones; set of 135 instructions
8086:
5 MHz
8086-1: 10 MHz
8086-2: 8 MHz
8086-4: 4 MHz
Examples
Package
Comment
| Intel C8086 |
Intel C8086-4 |
Intel D8086-2 |
Intel MD 80C86-2/B |
Intel QD8086 |
 |
 |
 |
 |
 |
| 40
pin CERDIP grey top |
40
pin CERDIP grey top |
40
pin CERDIP |
40
pin CERDIP |
40
pin CERDIP |
| - | ...-4 explicitly used on MCS-86 System Design Kit | remarked | military version | Prefix "Q" = commercial temp. range with burn -in time of 160 h |
(clones)
Package
comment
| Harris MR80C86-2/883 |
Harris MD80C86 |
Fujitsu MBL8086 |
Intersil MD 80C86-2/B |
MHS ID 8086 |
 |
 |
 |
 |
 |
| 40
pin CERDIP |
40
pin CERDIP |
40
pin CERDIP silver top |
40
pin CERDIP |
40
pin CERDIP |
| military version | military version | - | military version | - |
(clones)
Package
comment
| Mitsubishi M5L8086S |
NEC D 8086 D |
Siemens SAB 8086-C |
USSR K1810WM86 |
USSR K1810WM86 |
 |
 |
 |
 |
 |
| 40
pin CERDIP silver top |
40
pin CERDIP silver top |
40
pin CERDIP gold top |
40 pin DIP | 40 pin DIP |
| - | - | additional marking T40/85 | devided into 3 segments | devided into 3 segments |
Tesla
8089: I/O Preprocessor, 16-bit
8237: DMA Controller
8259: Programmable Interrupt Controller
8282: Octal Latch, Non-Inverting
8283: Octal Latch, Inverting
8284: Clock Generator
8286: Octal Bus Transceiver, Non-Inverting
8287: Octal Bus Transceiver, Inverting
8288: Bus Controller
8289: Bus Arbiter
