Hi guys,

I have a factory programing adaptor used for updating some small boards I 
repair (Boumatic). It will allow altering settings in the eprom of 
PIC16F84's or reprograming the entire chip. It's old and runs on DOS.

I recently installed XP on the old laptop that I normally use to run it, and 
now it wont work the adaptor properly.

Perhaps one time in ten, it will read the old settings in the pic, but when 
I edit them and attempt to send them to the pic, it comes up with "Hardware 
Fault ... check connections, power etc".

I didn't know whether it was my prog adaptor, cables, software or settings, 
so tried my desktop with XP. Same problem.

After a lot of stuffing about I eventually resurrected a 15 year old machine 
out of the shed (running Win95) and it works fine. Phew!!!

So the adaptor is ok, and the drive software  ... it must be in the settings 
of the serial port I'm trying to use  ...  although I compared the settings 
for both and made sure they were the same. Or some subtle difference in the 
way XP handles the serial port compared to Win95 ???

Does anyone have any ideas what may be the problem. I'd like to revert to 
the laptop for my workshop jobs rather than have a dinasaur desktop taking 
up space.

Regards,  Roger 

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