Port B propeller PLEASE......

hinv

I know you have a lot of resources tied up in the Turbo Prop,(propeller II), but I believe the portb propeller 1 would be a useful addition to the propeller family, even after Prop2 comes out. I know it was worked on, and at one time (over 2 years ago) you asked us if we would rather you put resources into it to get it finished(validated), or to go full steam ahead with the propeller that was to be due in about a year from then. I, and many others, would like to see it come to light, especially if it could be before the propeller 2, but even after because of it's low power requirements.

Thanks,
Doug

John R.

I think there was a post in the Prop forum on this with a reply from Parallax. Based on my memory of that, and conversations with various Parallax folks at the UPE events, the basic scoop is something along the lines of:

Parallax stated working on, or contracting with someone to work on, the prop with Port B. They were working on the layout for the chip.

Somewhere along the line, there got to be a disconnect between the design definition rules and the layout. I believe there was a problem "somewhere" with what in essence is a "ground fault". These are more than a little fun to find.

At present, Parallax does not have the resources to track down the problem. The project is by no means "dead", but there is no time line on when it will be picked back up.

Now, fair warning: My memory could be faulty, and I may have the above totally mucked up. Hopefully someone from Parallax can either confirm, or more likely correct (or at least clarify) me.

John R.

Mike Green

The main problem was a bug in the verification software that the vendor knows about, but hasn't fixed or hasn't been able to fix. It would take an inordinate amount of work to redo the chip design enough to try again and that would take away from the resources available for the Prop II.