Ben wrote: -chop- >First of all, I would like to point out that Jim Robertson told me a couple >of times that he couldn't guarantee that the board would work on my iMac. >He made sure that I understood that before sending me the product, and as >far as everything else goes, his service was excellent. The product arrived >promptly, he even rang me up to apologise for using a second-hand box >because his supplier of blank boxes was late! (Which in my book goes far >and above the call of duty). The warp-13 looks very professional, I got a >serial cable with it, and I have absolutely no complaints against him. -chop- You say that you are using it with your iMac.. The iMac has only USB ports, does it not? You would have to use an additional serial port card, or a USB to serial converter to connect your iMac to the Warp-13... Maybe the problem is not in hardware, but in software... Many devices (Serial Quickcams, for example) made to work with a mac's internal serial port will not work with serial port expanders, and their like. I am using a Picstart+ with a US Robotics modem cable and a DB25-DB9 gender changer and it works perfectly. Maybe you could hunt down an old SE-30, and an Ethernet card for it, so you could do all your programming with your iMac & MacPIC, then use the SE-30 for writing the code to the device... - Keelan Lightfoot