That is the problem with USB -->lots of the driver is not properly
written. I believe Microchip's USB drivers are also not very
well written. I switch to serial connection for the Promate III.
ICD2 seems to work fine with USB but people have met problems as
well. PICkit 1/2 are working fine since they are HID devices and 
use the default Windows HID class drivers.

Anyway drivers are generally difficult to deal with on any OSes, 
including Windows and Linux. They are also one of the major 
culprits why systems become unstable.

Regards,
Xiaofan

-----Original Message-----
From: olin_piclist@embedinc.com
Sent: Thursday, September 29, 2005 8:04 AM
To: Microcontroller discussion list - Public.
Subject: [EE] USB to serial converter

I just installed the new driver from the Prolific web site on my Windows XP
Home system and that works properly now too.  I can talk to an EasyProg
directly using the USB to serial converter.

So this proves (as most of us thought anyway) that RTS/CTS handshaking is
not required by the hardware nor a bug in Hyperterm, just a badly written
and very badly tested driver.

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