Like most things there are various degrees of ease and productivity. There is a vast array of software available for doing this. Not too much however in the public domain. Many cost thousands of dollars. The Achilles heel is the required libraries of components you need.
It is definitely not something you can pick up easily and be good at. I hope he will pardon me for saying this but Andrew is amazing. He turns around a complex hand drawn schematic in a day or two and has numerous PC boxes parallel processing data all over his house it seems. Most I’m sure don’t realize the years of practice you need to be good at this stuff. Imagine Word, AutoCAD and Photoshop expertise rolled into one. How long would it take to be good with that combination.
John
From: n8vem...@googlegroups.com [mailto:n8vem...@googlegroups.com] On Behalf Of Bill Dromgoole
Sent: Sunday, February 24, 2013 11:21 AM
To: n8vem...@googlegroups.com
Subject: Re: [N8VEM-S100:1465] S-100 board reorders
I have a slightly off topic question for you.
I have never made a PC board or trace routed or optimized a board.
Could you explain the process?
How do you start with chip placement? What software do you use? Is this a professional version or is it something a hobbyist could get freely. What kind of computer is the board designed on, is it vintage?
How long does optimization take to complete? It seems like it takes weeks or months to complete. Is this run on a modern computer? Is optimization different that trace routing or is it just the final step of the process?
I know that's a lot of questions but you did ask "Questions?".
Thanks for all your work.
----- Original Message -----
Sent: Sunday, February 24, 2013 12:17 PM
Subject: [N8VEM-S100:1455] S-100 board reorders
Hi
Well I was hoping to get the S-100 68K and S-100 80286 CPU board PCBs ordered next but they are not cooperating. The S-100 68K CPU board is nearly complete and should be done soon. It has taken much longer than I expected though. I would like it to complete trace route optimization before ordering PCBs.
In the meantime, I am thinking we could make another round of S-100 board reorders. What I am thinking is the S-100 IDE V2 PCBs are always popular and so are the S-100 buffered prototyping board PCBs. I would like to do another round of those and hopefully while they are settling the S-100 68K CPU and the S-100 80286 CPU boards will complete or at least get “close enough”
Another idea is the S-100 bus terminator board. Basically there are 10 builders willing to get these boards “as is” which is the full sized PCB with some prototyping area. Nothing fancy but useful for terminating a legacy S-100 backplane. However these have *NOT* been prototyped so there is some additional risk. I think it is minor though since the S-100 backplane has this exact circuit and it works fine.
Ideas? Thoughts? Comments? Questions? All welcome! Please lets discuss what the next steps should be. Thanks and have a nice day!
Andrew Lynch
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