Re: error message

ddowler (ddowler@direct.ca) Sun, 30 Jan 2000 10:59:50 -0800 

Date: Sun, 30 Jan 2000 10:59:50 -0800
From: ddowler <ddowler@direct.ca>
Subject: Re: error message



when i got that error message, it had to do with my process statements.
i changed my code so that i only had 2 processes that were very simple.
i think you should only use one line of sequential code for each process
statement.

as for clocking in a number, i used 2 bits for this: pushed and
pushed_delayed.  the pushed bit will be asserted when any of the buttons
(including reset) is pushed (and possibly held down for many clock
cycles).  the second bit is just the pushed signal delayed by one clock
cycle using a flip-flop.  now, when a button is pushed, pushed will be
high and pushed_delayed will be low, but for only one clock cycle (since
pushed_delayed will go high one cycle after a button is pushed), and
this is when the button signal should be considered valid.