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# Computer
## Aims and challenges
Make a fully functionnal computer from scratch.
The computer will be composed of :
- A CPU
- Some RAM
- Some ROM
- A controller to the system, a "bios".
At first every part will be the "industrial" version :
- The CPU made with an (2) ALU IC (74181 ?)
- The RAM a chip (UM61256BK-20 from 1993)
- The ROM another chip (D27C010 from 1986 !)
Then the aim is to replace them with made from scratch versions.
For the moment only the RAM is meant to be replaced with homemade magnetic core RAM.
## Architecture choices
The computer is in 8 bits since the ALU, RAM and ROM are meant to be in 8 bits.
The CPU have ports for inputs / outputs.