Hi

I hope this is the right place to ask this question... Is there anyone who could create this 4-Bit CPU in Logisim? http://repository.cmu.edu/cgi/viewcontent.cgi?article=1595&context=compsci

Looking forward to your replies!

 

If your logisim supports all the chips in table 3 of page 5 of the pdf file. You can most probably simulate it on the simulator. you also need a way to program the TTL PROM 74S289 in your simualtor.

I checked with my proteus and found that 74LS181 was in the library (what a surprise) and probably it can be sim in proteus.

Allen

[edit] Oops sorry. 74S289 is TTL static RAM. It should be 28C17 that you need to find a way to program it.

 

Hi

I hope this is the right place to ask this question... Is there anyone who could create this 4-Bit CPU in Logisim? http://repository.cmu.edu/cgi/viewcontent.cgi?article=1595&context=compsci

Looking forward to your replies!

And if someone replies that, yes, they could do it. What then?

 

Hi

Thanks for the replies! I need a simple circuit to study so I can program a simulation of it. Unfortunatly I'm more a programmer and not a circuit builder so I will loose too much time until I understand all the pieces and put it together in Logisim. Because I only have time until the end of August... So maybe I will try to build something simple from scratch in Logisim. Is here the place to get advise? Can I upload a .circ file for you to look at?

Thanks!

 

Looking at the PDF file again, I see that only a block diagram is attached.

There is no detailed schematic included for the computer. Where does the "clock" from 555 timer goes to? On the breadboard, there is a big chip called "CONTROL" and it was missing on the part list too. You have to study the document in more details before you start to simulate it.

Allen