Quoting Timothy Miller <[EMAIL PROTECTED]>:
On 10/15/06, William DUCK <[EMAIL PROTECTED]> wrote:
NSF Center for High-Performance Reconfigurable Computing (CHREC)
This is a long-term sort of project idea for us. The holy grail would
be to convert arbitrary C or Fortran code into FPGA logic. (This
would be especially good for Cray computers that arrange Opterons with
Xilinx FPGAs.) A more realistic goal, however, would be to convert a
restricted subset of C into gates.
Hello,
This is the first time I post here, even though I have been following
OGP development for a long time. So first i'd like to thank everyone
involved in OGP for their great job.
Now, regarding high level synthesis:
In the university where I learned hardware design, there is such a
project that is beeing developped. You can have a look at it here:
http://www-asim.lip6.fr/recherche/disydent/doc.html
"Disydent" (Digital System Design Environment) is a framework for
co-design of embedded systems. In this framework, an application is
described as a set of modules communicating through FIFOs. Each
modules is written in a subset of the C language, and these modules
can be either run in software directly, or synthezised as a hardware
coprocessor with the "ugh" (user guided high level synthesis) tool
Here is an example of what such a module would look like:
/*** HCF EXAMPLE ***/
#include <ughc.h>
/*** channels ***/
ugh_inChannel21 ina;
ugh_inChannel21 inb;
ugh_outChannel21 outa;
/*** registers ***/
uint21 a;
uint21 b;
/*** behavior ***/
void hcf()
{
while (a!=0)
if (a<b)
b -= a;
else
a -= b;
}
void ugh_main(void)
{
for ( ;; ) {
ugh_read(ina,&a);
ugh_read(inb,&b);
hcf();
ugh_write(outa,&a);
}
}
/*** HCF END EXAMPLE ***/
Taking this (and a file describing constraints on the datapath) as an
inmput, the hardware synthetizer is able to generate the datapath and
fsm implementing the module at a given clock period.
"Disydent" is publicly available and distributed under the GPL
license, so if you like you can try to play with it :)
If you have any questions about this tool, do not hesitate to ask.
Arnaud
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