The U80701 is a 32-bit
microprocessor
A microprocessor is a computer processor (computing), processor for which the data processing logic and control is included on a single integrated circuit (IC), or a small number of ICs. The microprocessor contains the arithmetic, logic, a ...
developed from 1986-1990 in the
German Democratic Republic
East Germany, officially known as the German Democratic Republic (GDR), was a country in Central Europe from Foundation of East Germany, its formation on 7 October 1949 until German reunification, its reunification with West Germany (FRG) on ...
. It was manufactured by
VEB Mikroelektronik "Karl Marx" Erfurt
Erfurt () is the capital (political), capital and largest city of the Central Germany (cultural area), Central German state of Thuringia, with a population of around 216,000. It lies in the wide valley of the Gera (river), River Gera, in the so ...
(MME) in
NMOS technology and is encased in a
ceramic quad flat package (CQFP-68 package).
Microprocessor
The U80701 was developed by
reverse engineering
Reverse engineering (also known as backwards engineering or back engineering) is a process or method through which one attempts to understand through deductive reasoning how a previously made device, process, system, or piece of software accompl ...
the
MicroVAX 78032
The MicroVAX 78032 (otherwise known as the DC333) is a microprocessor developed and fabricated by Digital Equipment Corporation (DEC) that implements a subset of the VAX instruction set architecture (ISA). The 78032 is used exclusively in DEC's VA ...
microprocessor of the
Digital Equipment Corporation
Digital Equipment Corporation (DEC ), using the trademark Digital, was a major American company in the computer industry from the 1960s to the 1990s. The company was co-founded by Ken Olsen and Harlan Anderson in 1957. Olsen was president until ...
(DEC). It is used in the
Robotron K 1820 minicomputer
A minicomputer, or colloquially mini, is a type of general-purpose computer mostly developed from the mid-1960s, built significantly smaller and sold at a much lower price than mainframe computers . By 21st century-standards however, a mini is ...
- a clone of the DEC
MicroVAX II.
The microprocessor used the 40 MHz input clock.
The U80700 system includes the following chips:
*U80701: CPU (DC333)
*U80703:
FPU (DC337)
*U80707: Console interface/controller DLART (DC319)
*U80709: CPU interface
gate array
A gate array is an approach to the design and manufacture of application-specific integrated circuits (ASICs) using a semiconductor device fabrication, prefabricated chip with components that are later interconnected into logic devices (e.g. NAN ...
(DC379)
*U80711: Q22-Bus interface gate array (DC380)
References
External links
Chip photos of the DEC 78032 and U80701Soviet, MicroVAX II compatible mainboard with U80701FC
{{Webarchive, url=https://web.archive.org/web/20150712033617/http://www.robotron-vax.de/K1820/m10_u80701_front.jpg , date=2015-07-12
Kombinat Mikroelektronik microprocessors
32-bit microprocessors