To PICLIST answers to various mail regarding the RS-232 PIC programmer.. Well.. the software was adopted in less than one hour On the schematics - well I used resistors I had on my desk. As the 4k7 did work Ok so I made schematics like that, thats whats I'm using on my test hardware. It may be required to use different resistors. I will put info on that when I get it tested.. 78L05 did work Ok, and I did'nt have any Zeners... Sure you may use Zeners as well. I havent released Win 3.1/Windows 95 drivers for the RS-232 programmer, if anyone interested please let us know. We are working for Linux support, some coding testing done, however we havent yet ported our drivers/software to Unix/Linux but we are working on... We have tested our DOS software in OS/2 boxes, it works. (RS-232 programmer driver not tested yet on OS/2) antti ---------------------------------------------------------- -- Antti Lukats Silicon Studio -- -- sis@rasi.lr.ttu.ee PO Box 3500 -- -- ftp://rasi.lr.ttu.ee/pub/sis Tallinn EE0001 -- -- http://rasi.lr.ttu.ee/~sis Estonia -- ----------------------------------------------------------