[hpsdr] Parallel port replacement - help needed

[Eric Blossom]

On Tue, Aug 01, 2006 at 10:08:33AM -0400, Philip Covington wrote:
> ***** High Performance Software Defined Radio Discussion List *****
> 
> Hi Phil,
> 
> There is no need to transfer the parallel port data through the two
> spare endpoints.  This will keep us from being able to quad buffer the
> endpoints which may be needed when we finally get rid of the BAD Xylo
> influence on the OZY.  We can use EP0 to control the parallel port
> through control transfers using vendor commands.  This is a much
> cleaner way of doing it since we do not need to transfer 512 byte
> packets just to control an 8 bit parallel port.
> 
> As a matter of fact, doing it through control transfers will allow us
> to pretty much treat it like a real parallel port from the PC side of
> things. The parallel port code in PowerSDR can be basically used AS
> IS.. instead of writing to the PortIO dll we will just send a vendor
> command to EP0.
> 
> 73 de Phil N8VB

I concur.

Eric K7GNU

 1154441927.0