Hi , I'm trying to make a digital circuit that implements a 5-bit Gray code counter. I've tried simulating the circuit on ISP lever Classic Project and doesn't work.I have to use GALp16v8
I have the following errors:
Input file: 'gray.tt2'
Device 'p16v8'
Note 4161: Using device architecture type P16V8R.
Warning 4034:Unable to preserve preassignments - performing second pass without preassignments.
Note 4059: Signal Q0 cannot be assigned (to pin 16) because
there are too many terms for output Q0 pin 16.
Note 4046: Signal Q1 (which has no OE) has been
assigned to pin 15 (which has pin OE).
Note 4046: Signal Q2 (which has no OE) has been
assigned to pin 14 (which has pin OE).
Note 4046: Signal Q3 (which has no OE) has been
assigned to pin 13 (which has pin OE).
Note 4046: Signal Q4 (which has no OE) has been
assigned to pin 12 (which has pin OE).
Design does NOT fit
FIT complete. Time: 1 second.
Done: failed with exit code: 0001.
I have the following errors:
Input file: 'gray.tt2'
Device 'p16v8'
Note 4161: Using device architecture type P16V8R.
Warning 4034:Unable to preserve preassignments - performing second pass without preassignments.
Note 4059: Signal Q0 cannot be assigned (to pin 16) because
there are too many terms for output Q0 pin 16.
Note 4046: Signal Q1 (which has no OE) has been
assigned to pin 15 (which has pin OE).
Note 4046: Signal Q2 (which has no OE) has been
assigned to pin 14 (which has pin OE).
Note 4046: Signal Q3 (which has no OE) has been
assigned to pin 13 (which has pin OE).
Note 4046: Signal Q4 (which has no OE) has been
assigned to pin 12 (which has pin OE).
Design does NOT fit
FIT complete. Time: 1 second.
Done: failed with exit code: 0001.