www.logiccircuit.org

Hello DolevBaron,

As you've said yourself, you've missed something.
You can use the splitters in two ways, for splitting wires and for combining wires.

Good luck, with your projects and enjoy, using logic circuits.
I hope you will enjoy it, as much as I did and still do.

Feel free to ask anything ...

Hello Prof. Mg,

I did not make any progress on the simulation of the Z80-processor.
I regret to say, that I've not been very busy with processors,
because I had to build a Windows application.

A short time ago, I restarted my favoutite hobby, working with LogicCircuits.
At this moment I'm working ...

Best rjryurimida1896,

I've seen your question earlier, but I've forgotten to answer.
Today I saw your problem again.
In case of, you did not found the solution, yourself, or you did not receive an answer,
I propose you this solution.

The counter, which counts the tens, is reset by the combination ...

Hello Bruno212

I've read your question. Of course, it is not difficult, to give a complete solution.
I assume, you want to have a 4-bits solution.
I advise you, to design a 4-bits comparator. Such a design compares two 4-bits Numbers.
Every time, you change the nibble (4-bits binary number), to ...

Hello Alexander,

You've figured out a nice solution for filling the ROM.
Especially you did realize this, within the program itself.
I would that I had thought of this solution.
However, I'm not for looking for this. For example,
It is easier to make a demultiplexer with a ROM than with the ...

Hello Alexander,

I agree with you, that your 8-bits AND, OR and XOR circuits, which operates bit by bit, work faster than the ROM's.
So, I wondered, you used a ROM in your ADD/SUBtract circuit.

I thought, that you, maybe, manually filled the ADD/SUBtract ROM.
And if you wanted to do this for the ...

L.s,

Finally, a programmable interrupt controller is integrated in my design.
I had to change several things to make it work. Fortunately I did succeed.

All the changes are mentioned on the property-page of MAIN-circuit.
I've tried to explain everything, to the best of my ability. (explain it in ...

Hello Alexander,

If you really want to speed up your circuits, then you better leave out the DEF-circuits.

Hereafter follows, in my opinion, how logiccircuits acts
Before the program starts running your circuit, your circuit will be evaluated first.
Then it will be optimized according to Boolean ...

Hello Alexander,

It might be, that I don't fully understand you.

You are completely right, when you say that, not used, inputs must have a defined level.
For AND-gates, the unused input has a HIGH level, for OR-gates the unused input has a LOW level.
As you mentioned, it is accomplished by pull-up ...

Hi, everybody.

While designing the Harvard-2, I felt, more and more, the need of handling interrupts.
So I decided to design an interrupt handler.

Easy said, but I think, I did succeed in making such a circuit.
The interrupt controller can handle 8 interrupts, it determines, itself, the priority ...