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simple_cpu_vhdl's Introduction

The Simplest CPU

What is it?

As a laboratory work. This is the simplest version of the CPU and is not a complete implementation of it. The main goal of the laboratory work is conflict resolving (see table below).

Presented in this project:

  • RAM,
  • four-stage conveyor;
  • registries.

Not presented in this project:

  • command memory;
  • mechanism for reading commands from command memory.

Realised on VHDL.

Author branch Quantity conveyors Quantity registries Supported instructions Conflict type
@johuex master 5 10 Load, Store, Sum, Mul (performed in 4 cycles) Data conflict, external memory cells
@ErmPav pav 6 8 Load, Store, Sum, Sub Data conflict, external memory cells

How to launch and test

  1. Uncomment 19-27 lines and comment 35-39 + 339-360 lines in top-level file (simple_vhdl_cpu.vhd);
  2. Check VHDL syntax errors in Quartus Prime;
  3. Comment 19-27 lines and uncomment 35-39 + 339-360 lines in top-level file (simple_vhdl_cpu.vhd);
  4. Testing this RTL models in ModelSim: Compile + Simulation.

simple_cpu_vhdl's People

Contributors

johuex avatar ermpav avatar

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