MERA 300


MERA 300 was a Polish-built 8-bit minicomputer family. It was first introduced in 1974 at the Poznań Trade Fair and Exhibition.

History

The MOMIK 8-B minicomputer had been designed in Poland in 1973. In 1974 the MERA 300, based on the previous model, was introduced. The same year, at the Poznań International Trade Fair and Exhibition, twelve more models were displayed. MERA 300 was designed by dr. Waldemar Romaniuk and Janusz Popko.

About the family

Family of the MERA 300 systems included:
MERA 300 included the next units:
Sets of MERA 300 included:
The MERA 301 used magnetic tapes for data storage with a capacity of 0,5 million characters.
The MERA 305 was an extended version with DMA and a four-level interrupt system, with a total of 128 interrupts.
The MERA 306 was a more complex, extended version with features including:
In addition to the above, it was possible to attach other devices:
The computer's machine language consisted of 34 instructions, including arithmetical, logical and control instructions.

Data Input/Output

Data input devices for the MERA 300 series were:
Data output devices:
Other input/output peripherals:
Basic system programs:
It should be mentioned that the MERA 300 RTX was not necessary while the MOTIS assembler ran, as it was able to work without an operating system.

Members of the family