{{:projekte:logo_v1.png?400|}}

====== EURO One CPU ======

Contact: [[user:nopx|nopx]]

Projectstatus: [[projekte:projektstatus|{{:projekte:hold.png?50|}}]]

===== Summary =====
I currently creating my own CPU from scratch. At first I am running it in Logisim, a logic simulator but I planed to build a simplier version in hardware subsequently. Here is the overview on the current state of the simulated CPU:

{{:projekte:2020:screenshot_from_2023-10-11_09-07-26.png?600 |}}

====== Control Panel ======
{{:projekte:2020:screenshot_from_2023-10-11_09-09-29.png?400|}}

====== Microcode Processing ======
{{:projekte:2020:screenshot_from_2023-10-11_09-10-32.png?400 |}}

====== State Logic ======
{{:projekte:2020:screenshot_from_2023-10-11_09-11-22.png?400|}}

====== Loading Logic ======
{{:projekte:2020:screenshot_from_2023-10-11_09-12-03.png?400|}}

====== Memory-Mapped IO, TIMER0, and INT0 ======
{{:projekte:2020:screenshot_from_2023-10-11_09-13-11.png?400|}}
===== Status =====

==== 2020-05 ====
I finished the pre-project: [[projekte:2020:4bitrelayadder|4Bit Relay Adder]] to gain some insights into relay logic. I decided to first build a much simpler 4 bit cpu from relays, without any transistor. You find the documentation of this second pre-project here: [[projekte:2021:eurotwo|EuroTwo CPU]].

===== Documentation =====
As I cannot document it here in detail I will upload my documentation from time to time.

  * {{ :projekte:euroone_v0.005.pdf |EuroOne v0.005 Documentation [PDF]}}
  * {{ :projekte:euroone_v0.006.pdf |EuroOne v0.006 Documentation [PDF]}}


===== Planned and ideas =====
  * Add UART Controller from ATMEGA32