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Design Languages >> Verilog-AMS >> using binary numbers in VerilogA
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Message started by hali on Feb 12^th, 2010, 6:46am

Title: using binary numbers in VerilogA
Post by hali on Feb 12^th, 2010, 6:46am

Hi.Can anyone tell me that can I use binary numbers in verilog A .e.g can i assign( integer i=0100); if no wat is the way to use binary numbers in verilog A? :-[

Title: Re: using binary numbers in VerilogA
Post by pancho_hideboo on Feb 12^th, 2010, 7:56am

hali wrote on Feb 12^th, 2010, 6:46am:

Can anyone tell me that can I use binary numbers in verilog A .e.g can i assign( integer i=0100);

There is no direct method which is available in Verilog-D or Verilog-AMS.

hali wrote on Feb 12^th, 2010, 6:46am:

if no wat is the way to use binary numbers in verilog A?

It is same as C-language.
i = 0*(1<<3) + 1*(1<<2) + 0*(1<<1) + 0*(1<<0);

Quote:

integer iflag, i, j, a, d;
integer x, h;

real test;

analog begin
@(initial_step) begin
iflag = 0;
d = 1;
x = 0;
for(i=0; i<=REGISTER_LENGTH;i=i+1) begin
x = x + (1 << i);
end

if(REGISTER_LENGTH == 15)
h = (1 << 0) + (1 << 14) + (1 << 15);
else
h = (1 << 0) + (1 << 5) + (1 << 9);
end // initial_step

@(timer(Clock_Period/10, Clock_Period)) begin
if(iflag > 0) begin
a = x & h;

j = 0;
for(i=1; i<=REGISTER_LENGTH;i=i+1) begin
j = j ^ ((a >> i) & 1);
end
x = x & (~1);
x = x ^ j;

x = x << 1;
end
iflag = 1;
end // timer

Title: Re: using binary numbers in VerilogA
Post by Andrew Beckett on Feb 15^th, 2010, 9:23am

Slightly confused by Pancho Hideboo's response, as in Verilog you can do:

i=4'b1010;

to assign a 4 bit binary number to an integer.

Regards,

Andrew.

Title: Re: using binary numbers in VerilogA
Post by hali on Feb 15^th, 2010, 9:25am

thanks pancho.Ur reply really helped me a lot:)thanks once again

Title: Re: using binary numbers in VerilogA
Post by pancho_hideboo on Feb 15^th, 2010, 9:26am

Andrew Beckett wrote on Feb 15^th, 2010, 9:23am:

Slightly confused by Pancho Hideboo's response, as in Verilog you can do:
i=4'b1010;
to assign a 4 bit binary number to an integer.

This is not valid for Verilog-A.

Title: Re: using binary numbers in VerilogA
Post by Andrew Beckett on Feb 15^th, 2010, 9:32am

And you can do this in VerilogAMS (not spectre's VerilogA though):

Code:

analog begin
@(initial_step) i=4'b1011;
...

Regards,

Andrew.