not an easy endeavour ....
Doesn't sound easy at all. Part of the attraction . But I might have to wait on it. I did find mosis's site. Is that an option? How does that work?
MOSIS combines designs from dozens of groups onto one reticle (about 25 x 35 mm). This reticle is then step and repeated across the wafer, making maybe 50 copies of the reticle. Depending on number of subscribers for a particular run, you may get some modest number of instances on the reticle. So, you can end up with several hundred of YOUR design made per wafer. (And, they always run a few wafers just to prevent one oops from ruining all of that run.) You pay a fee based on area and number of chips ordered. Minimum order is one "lot", typically 40 ICs at MOSIS, and in some processes that will run something like $7000, unpackaged.
Our chips are always bigger than the minimum, so they typically run $18000 to $25000 for the first batch of 40. Additional batches are something like $3000 per additional 40 parts.
One other thing, you need to use QUITE expensive design software to generate the design files and do simulations. The commercial versions of this software run something like $250,000 per seat, with a yearly license to keep it working. We use a university license version, but that restricts the chips to NON-COMMERCIAL use.
There are some open-source design software, but I have no idea if any of those are compatible with MOSIS or the foundry's design kits.
Purely digital circuits can be synthesized without "getting your hands dirty", but analog is done by carving each transistor by length and width, and massive amounts of simulation.
Jon