Posted by Exidor on 6, 2001 at 11:51 AM:
In Reply to: How to implement discrete logic circuit?? posted by Munich on 6, 2001 at 11:06 AM:
: I have come up with a simple circuit that I hope can be used to make 8-way joysticks act more like 4-way joysticks. It consists of just a handful of logic gates -- nothing really complicated. I've run the circuit though a number of simulators and the results thus far look promising.
: So my question is how to realize this thing. I could do like I did in college and get a breadboard a few ICs and wire them all together, but I was hoping for something a little more elegant than that.
: Unfortunately, I have no experience with doing this any other way and I can't seem to find any good ideas on the internet. So, I ask you, is there a way to get a discrete logic circuit into a single chip, and if so, what would I need to do it?
: Regards,
: Munich
Sure. There are any number of types of programmable logic devices PLD, CPLD, FPGA, etc. But, for any one of them you would need some design tools (maybe free, probably not), a way to program the device (likely some special programmer, or a more general device), plus the part itself. Then you still have to wire it up onto some type of breadboard for connection to the joystick and the computer. Unless you have a whole bunch of logic that you want to implement, or you want to make dozens of these things, you will probably get it done faster and cheaper just getting the small scale integration chips and hooking them together.
The prototyping breadboards that you push chip legs and stripped solid wire into are OK for small and temporary designs. If I want something to last and be at least a little rugged, I would do it as a wire wrap board (plus, wirewrapping is kind of fun).
Good Luck
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