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how to input hex to a 32bit bus pin

Hi,

A block has a 32bit input pin A<31:0>. I know what the setting needs to be but there is only VSS, VDD in the testbench, to write such expression is both tedious and error-prone. I wonder if there is any better way to input such bus value? Ideal scenario would be directly setting 8b HEX value

thanks!

Kevin

Andrew Beckett over 3 years ago
Kevin,

Two approaches that you could use.

Using the bussetp component described in Creating a component that allows setting a value on a bus in an analog simulation. This allows setting a decimal value on the bus, although it is limited to 31 bits (you could of course have two bussetp doing half the bus each)

Using the vector file input (Setup→Simulation Files) which is covered in the Spectre documentation. This would allow a true hex input which is time-varying if you wish.

Andrew
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