xschem/xschem_library/examples/pump.sch

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v {xschem version=2.9.5_RC5 file_version=1.1}
G {
process
variable del: time := 0.4 ns;
variable delay: time;
variable last : time;
variable lowvalue: real;
begin
wait on ING , USC.cap;
last := now;
delay := del * USC.cap;
print("start pump process: " & pump'PATH_NAME & " " & time'image(now) );
if(now=0 ns) then
USC <= RREAL_0;
elsif ING'event and ING='1' then
USC.conduct<=conduct;
transition(USC,val,delay);
elsif ING'event and ING='0' then
USC.conduct<=conduct;
transition(USC,0.0,delay);
elsif USC.cap'event and USC.cap > USC.cap'last_value and ING='1' then
lowvalue := USC.value * USC.cap'last_value / USC.cap;
glitch(USC, lowvalue, val, delay);
end if;
end process;
}
V {}
S {}
E {}
C {iopin.sym} 50 -90 0 0 {name=p1 lab=USC sig_type="rreal"}
C {ipin.sym} -80 -90 0 0 {name=p2 lab=ING}
C {use.sym} -150 -260 0 0 {library ieee;
use std.TEXTIO.all;
use ieee.std_logic_1164.all;
use work.rrreal.all;
library work;
use work.rrreal.all;
}