I discovered this circuit-building tool on Omni called Logisim, and you can build and simulate complex circuits. It's actually quite fun, and I am working on making my own CPU with it (with a very limited instruction set)
Discuss and post your Logisim creations here.
Link to website
Link to download
*bump
So, has anyone tried this yet?
souvik1997 wrote:
*bump
So, has anyone tried this yet?
I'm afraid I haven't gotten to give it a try yet, although it is of course relevant to my interests and my professional qualifications. 
I've used a few circuit simulators over the years, some for analog circuits, others purely for digital logic testing, so I'd be interested to try a more advanced one.
I used this in college in my Computer Organization class, it was pretty fun. Out final project with it was a MIPS ALU, here are the specifications
http://personal.denison.edu/~bressoud/cs281-s08/homework/MIPSALU.html. If I get around to it, maybe I'll upload the circuit.
I've been working on a CPU for a few days now, it has four 8-bit registers, which can be paired up into 16-bit registers, and supports loading immediate values into them, as well as loading them into each other.
merthsoft wrote:
That sounds like fun. For our Computer Architecture final project, Chrystina and I wrote an infinite-precision (arbitary-precision) four-function calculator in MIPS; I think the emulator we used was PCSpim.
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