Bit-Level C Simulator

[Kingsley Oteng]

Hello,

I was hoping to bit-level verify a communications simulator that I have
built and was thus hoping to modify my C code to do this (i.e. finitely
constrain my variables).

Is there a freely available bit-level accurate C compiler out there? Someone
mentioned "vi" a while back but I have been unable to find a link for
this...

- Kingsley

 

[Leon Heller]

Hello,

I was hoping to bit-level verify a communications simulator that I have
built and was thus hoping to modify my C code to do this (i.e. finitely
constrain my variables).

Is there a freely available bit-level accurate C compiler out there? Someone
mentioned "vi" a while back but I have been unable to find a link for
this...

Isn't vi the unix text editor?

Leon

 

[Wing Fong Wong]

Isn't vi the unix text editor?

Leon

There is a windoze version out there too. but you are right
it is usually the standard text editor in unix.

Wing Wong.

 

[Jonathan Bromley]

Hello,

I was hoping to bit-level verify a communications simulator that I have
built and was thus hoping to modify my C code to do this (i.e. finitely
constrain my variables).

Is there a freely available bit-level accurate C compiler out there?

Take a look at the SystemC reference simulator (www.systemc.org).
It's probably way more than you want, but it includes a fine
fixed-point C++ class library, and various other stuff that
may help.
--

Jonathan Bromley, Consultant

DOULOS - Developing Design Know-how
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[Tuukka Toivonen]

Is there a freely available bit-level accurate C compiler out there? Someone
mentioned "vi" a while back but I have been unable to find a link for
this...

Maybe that was a joke: you don't need any special compiler, C compilers
_are_ bit-level accurate in the sense that you can create a hardware
simulation model using C perfectly well. You need just a text editor...

If you are modeling just combinational logic, it'll be very efficient
and quite easy too. Just use something like

typedef unsigned char bit_t;

bit_t my_nor(bit_t in1, bit_t in2) {
bit_t x;
x = in1 | in2;
x = ~x;
return x;
}

I did something like this and it was 10-100 times faster than equivalent
VHDL code with QuickHDL (but with different computer).