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Modeling >> Behavioral Models >> How to replace "wait" statement in synthesis ?!?
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Message started by AdamPod on Nov 23^rd, 2006, 12:01pm

Title: How to replace "wait" statement in synthesis ?!?
Post by AdamPod on Nov 23^rd, 2006, 12:01pm

Hi, I need to replace "wait" statement in order to perform synthesis of my behavioral model... Is there any known way to do this ?!? I found on the www.eecs.berkeley.edu/~chinnery/synthesizableVerilog.html website some solution, by it does not fulfil all my requirements. Below is a peace of my code I need to synthesize:

always@(state)
begin
case (state)

read:
begin
XEN_EEPROM_Read <= 1'b1;
eeprom_reading <= 1;
ER <= read_test_count;
wait (eeprom_reading == 0);
if (ED_int == EV_test)
failure <= 0;
else
failure <= 1;
parity <= ~parity;
read_test_count <= read_test_count + 1;
state <= idle;
end
.......

eeprom_reading signal is set to zero when appropriate counter reach given value - the whole process is put in separate "always" block. In the rest of the cases there is no more of "wait" statements. I will be glad if anyone knew how rewrite this code properly and could gice my some hint.

Title: Re: How to replace "wait" statement in synthesis ?
Post by jbdavid on Dec 8^th, 2006, 10:36pm

Sorry AdamPod, the bulk of the experience here is with Analog behavioral models... I think the last time I synthesized any HDL was in my VLSI design class at the university probably about 16 years ago..
I only do digital hdl (I call it Verilog-D) for testbench related stuff..
Maybe Janik Begeron's site would have better help?
Good luck.