I have built some equipment (RF upconverter) which we would liked controlled via an IEEE-488 bus. Has any one used a PIC as the basis of an IEEE-488 interface and able to offer any suggestions and things to avoid etc? If anyone knows any good web sites on this subject I would also like to know. Thankyou, Gary -- -------------------------------------------- Email: Gary.Fowler@dsto.defence.gov.au Phone: +61 8 8259 5767 Fax: +61 8 8259 5672 Defence Science & Technology Organisation PO Box 1500, Salisbury, South Australia 5108 --------------------------------------------