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#1 Nov 6, 2020
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"ERROR(ORPSIM-16260): Invalid value" and "ERROR(ORPSIM-16249): Bad state value(s)"

Hi, I am a student and new to OrCAD, I'm trying to do homework that is designing a combinational circuit (4-bit adder/subtractor) and do time domain simulation. But I have some trouble now and I have no idea what mistake a made, I hope someone can help me and I would really appreciate the help, thank you very much!

The schematic is:

The property of each input are:

  M   B1 B2 B3 B4 A1 A2 A3 A4
Command 1 0ns 0 0ns 0 0ns 0 0ns 0 0ns 0 0ns 0 0ns 0 0ns 0 0ns 0
Command 2 0ns 0 100ns 1 100ns 1 100ns 1 100ns 1 200ns 1 200ns 1 200ns 1 200ns 1
Command 3   300ns 0 300ns 0 300ns 0 300ns 0 700ns 0 500ns 0 500ns 0 500ns 0
Command 4   400ns 1 500ns 1 500ns 1 500ns 1 900ns 1 600ns 1 600ns 1 600ns 1
Command 5   900ns 0 800ns 0 800ns 0 800ns 0 1000ns 0 700ns 0 700ns 0 700ns 0
Command 6   1100ns 1 1100ns 1 1100ns 1 1100ns 1 1100ns 1 900ns 1 900ns 1 800ns 1
Command 7             1000ns 0 1000ns 0 1000ns 0
Command 8             1100ns 1 1100ns 1 1100ns 1

 

 

The error I got:

error.png

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