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T > TESLA > PMI-80   

TESLA  Tesla

The PMI was used for learning programing machine code in Czech and Slovakian polytechnic university from 1982 year.

It was developed and manufactured in Tesla Piestany factory which core business was to produceo active components like diode, transistor and integrated ciruits, including the MHB 8080A CPU and chip from his family.

It was a basic system, enclosed in a plastic case and precisely based on the MHB 8080A, a Tesla version the 8080 processor.

It had minimal ROM, RAM and I/O capabilities, but enough in schools, to enter, study and run small programs.

Thanks to Jiri Cernohlavek, from Czech Republic, for information and pictures.


Martin Bruno remembers:
I used this computer when I was attending Industrial College Of Electrical Engineering in Eastern Slovakia, town of Michalovce at second class in 1994/95 and this computer was widely used at Slovakian technical schools for learning machine code of 8080 processor.
It was a bit complicated because you had to write program in hex form. Actually it was computer but practically not for home use nor for some entertainment... it was a good form how to scare people about machine code programming :-)
I must to thank my home computer Didaktik M at that time that I learned machine code resp. assembler in much more comfortable way :-)

Dan Handenberg adds:
The computer was originally designed to control printing machines, but the processing was too slow to transfer information fast enough to the peripherals.

We need more info about this computer ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.
Please consider donating your old computer / videogame system to or one of our partners from anywhere in the world (Europe, America, Asia, etc.).


I have one in my collection.
I''m glad that I''ve found some info aroung this single board computer.

Monday 12th September 2011
belgium4 (Belgium)

Thanks for remember me this baby. It was a long time ago, in the big garage Tesla.

Sunday 10th June 2007
Roman Kiss (Slovakia)

Yes there is an emulator for PMI80... Altough I've heard there are some problems with it under W.XP, I can work with itt allright. The interface is pretty darn simple (just as probably the PMI80 was)...

Wednesday 18th May 2005
Gergely Takacs (Slovakia)


TYPE  Home Computer
ORIGIN  Czechoslovakia
BUILT IN LANGUAGE  Machine language hexadecimal monitor
KEYBOARD  25 key calculator type - Hexadecimal and function keys
CPU  TESLA MHB 8080 (Intel 8080 clone)
TEXT MODES  9 digit, 7 segment, diode calculator type
I/O PORTS  DIN 5-pin Power - DIN 5-pin analog I/O to tape -
POWER SUPPLY  External power supply unit, +5V / -5V / +12V
PERIPHERALS  Additional ROM and I/O chip sockets

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