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I am trying to simulate an SRAM in Ngspice. I am writing data into a particular address from an input port and reading the same from an output port while performing transient analysis. The simulation takes a couple of hours and then asks for "Scale set". The Ngspice manual says scale set is the quantity that is shown on x-axis. I want time on the x-axis but do not know how to indicate.

rachana
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  • It's difficult to know with the information you gave. Did you mean setscale? What other commands are you using? Can you make a small test netlist to show how you are using the commands? Can you reproduce these problems with this smaller test schematic? – a concerned citizen Jun 07 '21 at 17:56
  • yes it is setscale from what I saw in the manual. I did not initially mention that in the spice file, so Ngspice shows up with this query- "Scale set". – rachana Jun 07 '21 at 20:06
  • Control statements that I used: meas tran Vdout1_30 AVG v(dout1_30) FROM=0.0n TO=50.0n (more of this kind- all for output ports), tran 10p 50n UIC, plot allv – rachana Jun 07 '21 at 20:07
  • Try different settings with the solver, also LT spice has a much better solver, you may want to try your circuit there – Voltage Spike Jun 07 '21 at 22:27

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