> I'm just working on the host interface (CPLD > interfaces to a > PIC's PSP, then the PIC does protocol conversion to interface to > a PC via USB > or RS232) and the acquisition logic now. on the USB pics the paralell slave port is replaced by the streaming paralell port. not sure if this is better or worse for your app but its certainly something to be aware of. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist