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Width of unsized based number like 'b1, 'b0, and 'b10

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alam.tauqueer

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Hi,

Can anyone tell me what would be the width of LHS and RHS

out[3:0] = 'b1;
out[3:0] = 'b0;
out[3:0] = 'b10;

should we take RHS width as 1 ??

or its width will be equal to width of LHS signal out??

Regards,
Tauqueer
 

My experience with simulators and back-end tools is that RHS width is padded with leading 0 to match the LHS width.

out[3:0] = 'b1; // becomes out[3:0] = 4'b0001
out[3:0] = 'b0; // becomes out[3:0] = 4'b0000
out[3:0] = 'b10; // becomes out[3:0] = 4'b0010


- Hung
 

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