Now, I used the state machine to apply to VHDL. In my case, there are two states, S0 and S1. When I press a button, S0 is transit to S1 such that the LED display some of the segments,like segment a,b,c. And press this button again, S1 is back to S0. How can I present in VHDL so that the LED display in segment a,b,c ? Thanks!!
Why don't you have a look at a common VHDL book ? There are so many simple examples which show how to describe a state machine ...
You could design your state machine on a piece of paper first,=20 later try to describe in VHDL ...
Rgds Andr=E9
if you are trying to learn vhdl by asking simple questions to this group you'll never learn. Download a good tutorial from the web and start working with the provided examples.
Aurash
laura snipped-for-privacy@yahoo.com.hk wrote:
I want to know which VHDL book is better for learning...??
Hello, A good source of information is the tutorial EVITA
Fabio
laura snipped-for-privacy@yahoo.com.hk wrote:
A good starting point is Peter Ashenden's "VHDL Cookbook". You should be able to find it online for free download, using Google.
His bigger book "Designer's Guide to VHDL" is very good too.
- Brian
I disagree. It is a real nice book for advanced VHDL designers, but not for beginners. It shows a lot of not synthesizable code, a lot of features of the VHDL language (which may be confusing for a beginner), uses the data type bit / bit_vector which is not recommended and so on ...
For me Douglas J. Smith "HDL Chip Design" has of great help learning both VHDL and Verilog.
Ralf
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