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 on: October 14, 2018, 10:35:31 pm 
Started by enriquemesa8080 - Last post by enriquemesa8080
Hello. I am a programmer and electronic engineer student. I am learning about microprocessors. I want to build my own project from scratch, but I want to test it in a simulator first.

I don't have the components at hand, and i want to build the design in paper and pencil and later turn it to computer simulator, can be Logisim.

I want to implement a 4 bit processor, something that can be easy handled by me. I want to implement a basic featured processor.

I want to use:


I think that this subset of instruction can make work any program that you can imagine. Also, i am planning to make a collaborative work trying to build things in spanish, for my friends. Please, help me.

Currently i am building circuits using all recycled components whose came from old devices whose get broken for any reason.

I plan to join the ring too, but if my design is paper only i can't.

Thanks. I hope you the best wishes, keep you improving your software until you can build a great software and hardware.

 on: September 29, 2018, 12:06:19 pm 
Started by themonkeyking478 - Last post by themonkeyking478
Hi there,

I have just come across MyCPU and it is fascinating. It certainly looks similar in power to an SNES or so?

Here is what I'd like to ask:

Would an ATX style motherboard be practical? This would be a MyCPU that you could install in a desktop tower style case and power using an ATX power supply?

You could even have a backplane with the VGA, Ethernet etc connectors on it.

I only do soldering etc as a hobby project (kits you get off ebay that light up or buzz, etc) so it would be quite some time before I could do something like this!

Many thanks for your time


 on: September 10, 2018, 05:42:44 am 
Started by dkuschel - Last post by ry755
I think the new forum looks much better than the old one Wink

 on: August 24, 2018, 07:42:23 pm 
Started by dkuschel - Last post by dkuschel
Hi all, I have opened this new forum after the old one was closed by the provider. Unfortunately it was not possible to move all the content of the old forum to the new one. But I have copied the most important topics "by hand", so not all is lost. Now it's on you to fill the new forum with content!

The old forum was hosted by

 on: August 16, 2018, 02:18:49 pm 
Started by dkuschel - Last post by dkuschel
Please report missing links, broken links or other errors on my Website here.

 on: August 16, 2018, 02:17:07 pm 
Started by dkuschel - Last post by dkuschel
Please report the bug you have found.

 on: August 16, 2018, 02:15:57 pm 
Started by dkuschel - Last post by dkuschel
Please report the bug you have found.

 on: August 16, 2018, 02:13:53 pm 
Started by dkuschel - Last post by dkuschel
If you have any questions about MyCPU application programs (like contiki, basic, etc.), this is the right place to ask.

 on: August 16, 2018, 02:11:44 pm 
Started by dkuschel - Last post by dkuschel
If you want to write your own assembler program for MyCPU, please ask your questions here.

Many users asked me already for the complete list of OP-Codes. Here is a direct link to the list:

 on: August 16, 2018, 02:04:31 pm 
Started by dkuschel - Last post by dkuschel
Hi MyCPU-Users,

you can share your work with others in this thread.

Robin Tönniges did it already in the old MyCPU forum. Here is a copy of his last posts:


Hello folks,

I've decided to upload all my project to github so everyone can get every project (software and hardware) in its up-to-date-state even if its not finished like my all-time-project "RegMonV2".

Another nice thing is that every user who have an account on github can commit fixes, update or changes for which I would be infinitely grateful.
Thanks for reading Wink


Hello again,

I've routed a little evaluation board for MyCPU which I use very often to play a little with self builded hardware extensions.
You can download the files on my repository.
I know thats not really a software thing but I dont want to open a new thread Smiley

Have fun!



I've finished another project... a slave clock control (with build in hardware from the DCF77-Project).
"Slave Clock" on Wikipedia:

This is my first board that can be easily put to the MyCPU Backplane-Bus. :rp:

The Board is designed for clocks that works with alternating DC.
You are able to use the 12V from the MyCPU-PowerUnit or you can use an external power source for the clock.

Code and hardware can (as always) be found on github under MyCPU_PRO_SCC:

In the folder "Hardware/external module" is a basic version board that can be connected to the Multi-I/O-Unit.
This module only controls the clock and dont have the hardware for the DCF77-Receiver on it.

Hope you can use it!

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