Hi List, I have a made xwisp628 with an FTDI/FT232 USB to serial converter and without the MAX232. It is working well but took longer to program a chip. I understand that this is because of the USB bulk transfer. Recently, I found that xwisp2191 has support for FTDI api. The problem is that I was not able to make the xwisp2wf.exe program a chip. Does anyone know the command line syntax of xwisp2wf.exe? proper syntax? I use "xwisp2wf port COMx go test.hex" Does anyone have experience using xwisp628 with USB converter using xwisp2wf.exe? I cannot capture the error msg right now because my modified xwisp628 is at home. I am still at work now. I can send it if needed. regards, Reggie -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist