A. LeFevre, Howard

a VHDL 8254 Timer

## Description

a VHDL version of the Intel 8254 timer.  
  
Note: uses a synchronous (Wishbone) processor interface, rather than an asynchronous of the Intel 8254.  
  
Design assumes asynchronous interface/counter clocks – includes Boolean generics (for each counter) if the same clock is used for interface and counter, or if the clocks are synchronous (different frequency, but with aligned rising edges)  

## Features

Uses parts from the gh\_vhdl\_library project

## Status

added version with AMBA APB interface 16 Aug 2008


<h2 id="description">Description</h2>
<p>a VHDL version of the Intel 8254 timer.<br />
<br />
Note: uses a synchronous (Wishbone) processor interface, rather than an asynchronous of the Intel 8254.<br />
<br />
Design assumes asynchronous interface/counter clocks – includes Boolean generics (for each counter) if the same clock is used for interface and counter, or if the clocks are synchronous (different frequency, but with aligned rising edges)<br />
</p>
<h2 id="features">Features</h2>
<p>Uses parts from the gh_vhdl_library project</p>
<h2 id="status">Status</h2>
<p>added version with AMBA APB interface 16 Aug 2008</p>


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a VHDL 8254 Timer

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