re: IRDA

   Stefan, I have the HP evaluation boards. The problem with adding it to the
pc's serial port is that you need to generate a 16X baud rate. You can get
a Windows IRDA driver from Microsoft for free. Most of the newer I/O chip
sets support IRDA. I have'nt tried to interface the HP boards to Windows
yet. When I get the time, I intend to interface them to a PIC 16C73. When/if
I do, I'll be glad to share the info.

   - Tom

At 11:15 AM 4/3/97 +0200, you wrote:
>> At 11:55 03.04.97 +0930, Mike Smith wrote:
>> >Where  did you find the info on how to get the PC motherboard to work with
>> >it?  My *bios* has support, but I can find no data on h/w support for it.
>> >
>> >MikeS
>> >
>>
>> Some mainboards (at least ASUS) have a connector, where you can attach a
>> little
>> daughter board (2 x 1 inch) with the IrDA transceiver.
>> It's described in the board manual, but one seems not able to buy it.
>> It contains almost only the Hewlett Packard IR modul, therefor you can
>> build it
>> yourself.
>
>You can also build an adapter from the
>standard RS232 to IRDA. For sending
>data it has to generate shorter impulses
>and for recieving it expands the pulse
>length, so the RS232 can recognize 0 or 1.
>
>There is a special HP chip for this.
>The only problem is, the time values depend
>on the baud rate, and a standatd RS232 has
>no bit takt avaible.
>
>So you have to use a trick and first tell
>the converter chip the baud rate. This
>means you need special software...
>
>
>
>St.