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ideal op amp comparator settings

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Hello , i am using ahdlib library component called: OPAMP i want to convert its in a simple comparator for  A/D .

i want it to see who is bigger and output one of the supply voltages i put:

gain: 1.5M

freq_unitygain 8M

rin: 4M

vin_offset:30u

ibias:15n

slew rate:8M

rout: 70

positive supply 1.2 negative supply 0 vref =0.

i put two  opposite sources switching from 0 to 0.6 at 1nsec period and instead of showing me in the output the replica of source1

it gives me a straight line at 0.8 V

where did i go wrong transforming it to comaprator?

Thanks


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