Designing Amiga Expansion Hardware

[billt]

Look up

http://www.csee.umbc.edu/~plusquel/650/
http://geda.seul.org/
and
http://www.opencores.org/

for ideas and electronics design considerations. opencores probably has information about free or cheap CAD/EDA tools and design flows. I'm planning to buy a copy of Eagle PCB from www.cadsoft.de as it is the most affordable and has better feature support than the GPL PCB software. I know I cannot afford protel or orcad or their like, which are more than US$10000 per license. (Yes, more than ten thousand dollars) Eagle isn't quite as fancy as those are, but seems pretty decent, and they have a free eval version and even cheaper hobbyist licenses fro simpler designs than the full-blown pro version. Some other vendors have free licenses for old versions or time/feature-limited evaluations. I've been encouraged to look up Cadstar Express and P.R.Editor for some of this.

[billt]

I have a near complete design for a scandoubler, admittedly only 16 bit colour though but only uses 4 ICs. Probably a bit complex but if anyone wants the details, I'll upload them to my website.

If you're not interested in scaling your design to 24bit, I'm sure someone around here would like to try. I'd love an internal flickerfixer for my A1200...