https://github.com/dmytrostriletskyi/8-bit-computer-memory-init

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dmytrostriletskyi / 8-bit-computer-memory-init

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Initialize the 8-bit computer memory with a program to be executed
automatically on powering.

MIT License
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@dmytrostriletskyi
dmytrostriletskyi Add disclaimer what this project is extension of
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e55b982 May 8, 2021
Add disclaimer what this project is extension of
e55b982

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Change execution on powering GIF for faster one
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Motivation Setup Instructions Software Schema

README.md

Initialize the 8-bit computer memory with a program to be executed
automatically on powering. This project is small extension of Ben
Eater's computer (SAP-1 architecture).

[execution-]

This picture is the animated picture, wait for it.

 Motivation

The goal of the project is to have an option of hanging the 8-bit
computer on a wall, connect it to a power supply and see how a
program is executed automatically without manually programming the
memory.

[computer-on-a-wall]

The picture is lent from this Reddit thread.

 Setup

The program was tested with the following systems:

  * macOS Big Sur:
      + Arduino Nano:
          o Board -- Arduino Nano.
          o Processor -- ATmega328P (Old Bootloader).
          o Programmer -- Arduino as ISP.

 Instructions

 Software

Clone the repository with the following command:

$ git clone git@github.com:dmytrostriletskyi/8-bit-computer-memory-init.git
$ cd 8-bit-computer-memory-init

By default, the Fibonacci number program is defined in the code file
on 28th line in the exact same way it's done by Ben Eater in his
video. If you want to change it, open the code file and change the
program, otherwise skip this step:

$ vim +28 program.ino

Copy the program to the Arduino sketchbook folder with the following
command:

$ mkdir ~/Documents/Arduino/program && cp program.ino ~/Documents/Arduino/program

Then connect Arduino to a computer, open and upload the sketch.

 Schema

The wiring schema is illustrated below according to the following
matching:

  * A1 -- the chip right from run or programming mode switch.
  * A2 -- the chip right from writting to memory button.
  * A3 -- the chip right from resetting computer button.
  * D2-D9 -- the chips right from the DIP switches for memory values.
  * D10-D13 -- the chip right from the DIP switches for memory
    address.

[schema]

About

Initialize the 8-bit computer memory with a program to be executed
automatically on powering.

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Readme

License

MIT License

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