Open Source MinGW/MSYS2 Simulation Software

This project introduces a console application designed for functional and behavioral emulation of the old Soviet calculator EPOS-73 (ЭПОС-73) also known as Elektronika B3-11 (Электроника Б3-11). The project is conceived as an auxiliary for verification of the switch-level simulator based on Verilog HDL of the said apparatus. Calculator model EPOS-73 is interesting in that it was one of the first models of Soviet computing performed at LSI, that were fully designed by Soviet engineers. It was used a set of four LSIs series K1ZHG451...4 (К1ЖГ451...4) or later designation K145HK1...4 (К145ХК1...4). The choice of this calculator as an object of modeling is due to the presence of (miraculously survived to this day) a sufficient set of design documentation for the technology applied in its LSIs, including a technical description of the device, revealing its calculating algorithms. The project is intended for research and education purposes.

This project introduces a console application designed for functional emulation of the USA old calculator series Wang 700 and their USSR derivatives 15VSM (15ВСМ). The main goal of the project is emulation of those models made in Soviet Union: 15ВСМ-5, 15ВМ16/32/128 - which are also known as D3-28 (Д3-28). The choice of them is due to the extremely strong and authentic CPU command set developed by Soviet engineers as a superset around the original Wang 700's command set. While Wang 700 were just programmable calculators, Soviet machines were almost complete computers taking into account their advanced CPU command set, huge RAM volume, ability to work with wide set of peripheral devices including the video terminal 15IE (15ИЭ) and existence of BASIC and other programming languages written as loadable applications. Still I consider them as calculators also due to some aspects exclusively specific to calculators. The project is intended for research and education purposes.

The Open Source Load-Flow Software Development.