Clyde

I now remember my attempt at using compose. This was at work on Friday, and I think when i replied I was not caffeinated. I will try again tomorrow.

I now remember my attempt at using compose. This was at work on Friday, and I think when i replied I was not caffeinated. I wil ltry again tomorrow.

I once tried to model an IIR filter in XSPICE. It seemed inviting with the digital delay and analog to digital bridge. I got stuck in the analog to digital output, thrashed around quite a bit asked questions and gave up. IIRC, the proper birdge from analog back to digital does not exist, but my memory may be faulty in th exact failure of that exercise.

Dick, Will it repeat past the end of file? That is, produce a bit stream which repeats after 65534 clocks? Here is one I did with XSPICE: https://sourceforge.net/p/ngspice/discussion/ngspice-tips/thread/6a5b9dd2/#c1b8/2805/3c83/90a6

Dick, Will it repeat past the end of file? That is, produce a bit stream which repeats after 65534 clocks?

Thnaks for the reply. I don't have an error message to give you. There was a question in the help disucssion where someone asked about a PRBS signal source. I had done one years ago in VHDL, but I thought as I am helping some with NGSPICE, it would be a good exercise. So, I executed it in nave XSPICE. In my verification, I am trying to get to the digital nodes in a tabular format. A side problem would be, how does one name digital nodes in a netlist such that gtkwave will see it as a bus?

Thnaks for the reply. I don't have an error message to give you. There was a question in the help disucssion where someone asked about a PRBS signal source. I had done one years ago in VHDL, but I thought as I am helping some with NGSPICE, it would be a good exercise. So, I executed it in nave XSPICE. In my verification, I am trying to get to the digital nodes in a tabular format. A side problem would be, how does one name digital nodes in a netlist such that gtkwave will see it as a bus?

Hello, Giles, I am trying to figure out the compose method to get digital XSPICE signals to the analog domain. I am not able to make it work. Could you kindly help me with this? NGSPICE reports an error when I try. Clyde