Problem with if statement

[amisophie]

I'm writing a simple if statement code and I got an error saying.

ERROR:HDLParsers:164 - "C:/Xilinx/IfStatement/IfS.vhd" Line 42. parse error, unexpected TICK

What is a TICK and how can I correct it? This is a simple problem but I am teaching myself VHDL so everything seems to be hard right now.

Also does anyone know a good book or a website that I can use to learn.

Thanks in advance.

 

[jeandelfrigo]

Amisophie,

A tick is '.

You usually use ticks for assigning zero or one to a signal

e.g. signalA <= '0';

When you get an unexpected tick error from the compiler you should go to the rule number and take a good look before, after and on the line to check if you did not forget to close a tick.

e.g.

i_componentA : componentA
port map (

clk => clk
enable => '1,
rst => reset,
out => out
);

the code above would probably give the same error you get.

regards

jeandelfrigo