File format

• At the begining of the source file, there has to be file header and licence. Here is an example.
• Maximal length of line is 80 characters.
• All tabs are expanded to 3 spaces.
• Every comment has to be in english.
• Every process should be commented (register, conter, etc.)

Signal names

• Signal names in entity inrface are all upper case.
• Signals that are not defined in entity interface has to be all lower case.
• Words are separated by underline character ("_").
• Use short names ("clk").