GAL20V8 CombTest ; Check the forcing of complex mode by feedback on an output pin. Clock I0 I1 I2 I3 I4 I5 I6 I7 NC NC GND /OE I8 O0 O1 O2 O3 O4 O5 NC NC NC VCC O0 = I0 * I1 + O1 O1 = I2 + I3 O2 = I4 * /I5 + /I4 * I5 O3 = I0 * I1 * I2 * I3 * I4 * I5 /O4 = I0 + I1 + I2 + I3 + I4 + I5 /O5 = /I7 + I8 DESCRIPTION Simple test of combinatorial logic.