The U80701 is a 32-bit
microprocessor
A microprocessor is a computer processor where the data processing logic and control is included on a single integrated circuit, or a small number of integrated circuits. The microprocessor contains the arithmetic, logic, and control circ ...
developed from 1986-1990 in the
German Democratic Republic
German(s) may refer to:
* Germany (of or related to)
** Germania (historical use)
* Germans, citizens of Germany, people of German ancestry, or native speakers of the German language
** For citizens of Germany, see also German nationality law
**G ...
. It was manufactured by
VEB Mikroelektronik "Karl Marx" Erfurt
Erfurt () is the capital and largest city in the Central German state of Thuringia. It is located in the wide valley of the Gera river (progression: ), in the southern part of the Thuringian Basin, north of the Thuringian Forest. It sits i ...
(MME) in
NMOS technology and is encased in a
ceramic quad flat package (CQFP-68 package).
Microprocessor
The U80701 was developed by
reverse engineering 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 ...
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 un ...
(DEC). It is used in the
Robotron K 1820
The K 1820, full name RVS K 1820 ({{lang, de, Rechnersystem mit virtuellem Speicher, "computer system with virtual memory"), cipher in the SM EVM of the former COMECON countries SM 1720, is a workstation developed in East Germany. VEB Robotron ...
minicomputer - a clone of the DEC
MicroVAX II.
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 prefabricated chip with components that are later interconnected into logic devices (e.g. NAND gates, flip-flops, etc.) according ...
(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