Great items for chip collectors !!!
 
RARE Russian Soviet CPU Clone of famous Intel 8080a  - 8-bit processor (main CPU). MADE in USSR.
 
KR580VM80A - Rare Russian plastic clone (unknown plant, inscription "Made in USSR", 1988) of 8-bit Intel 8080a processor. 
  
For more information, please visit - www.cpu-world.com/CPUs/8080/MANUF-USSR.html

Some history :
 
KR580 was one of the most widespread microprocessor sets in Soviet Union in the end of 1980s. 
A lot of computers had been created on the base of KR580: 
personal ("Magik" , "Irisha" , "Mikrosha" etc.), 
general purpose ("SM-180x" , "ES7970" , "Electronika-K1" , 
"Iskra-226" , "Radio-86RK" etc.), school ("Korvet" ).

Monocrystal microprocessor KR580IK80 is the basis of the set,  
it has 16-bit address bus and 8-bit data bus, as Intel 8080/8085 and Zilog Z80 processors, 
and is compatible with them by command set and machine code. 
Thus, any software written for 8080 can be run on KR580IK80. 
Furthermore, KR580IK80 has 40-pin package identical to 8080 and can be used in 8080 mainboards 
(Earlier version of the processor - K580IK80  - has 48 pins and is not compatible with 8080). 
A model of this microprocessor called KR580IK80A  
(later renamed to KR580VM80A ) is analogical to 8080A processor.
 

KR580 series includes a large number of chips that allow simple connection of 
different devices and maintain effective data exchange between computer parts:
 
KR580GF24 - clock generator (16 pins, 8284 analog)
KR580VK28/38 - system controllers (8228/8238 analogs)
KR580VG18, KR580VG92/92A - system controllers for different bus types (28 pins, 8218/8292 analog)
KR580IR82/83 - latch registers (20 pins, 8282/8283 analog)
KR580VA86/87 - receivers/transmitters (20 pins, 8286/8287 analog)
KR580VI53 - programmable timer (8253 analog, 3 channels, 24 pins)
KR580VV55/55A - parallel peripheral interface (8255 analog, 3 channels, 40 pins)
KR580VV51A - serial peripheral interface (8251 analog, 28 pins)
KR580VT57 - programmable DMA controller (8257 analog, 4 channels, 40 pins)
KR580VN59/59A - priority interrupt controller (8 interrupt request inputs, 28 pins)
KR580VG72 - floppy drive controller (8272 analog)
KR580VG75 - CRT display controller (8275 analog)
KR580VV79 - keyboard and indication controller (8279 analog)
KR580VK91/91A - system bus arbiters (8291 analog)
KR580VT42 - dynamic memory controller (3242 analog)
KR580VR43 - 4x4 I/O compander (8243 analog)

Great item for chip collectors !!!

CPUs from the Old Stock, in working order.