>Oh one final thing. Having used this I'm curious as to how it works. >I can see that the daughter board has two chips, one seems to be >some sort of PIC core the other the IO devices. But how are the >internal parts of the device exposed, what sort of operations are >supported. Anyone know? That's all "non-disclosable" information. You can gain a good understanding, though, by studying how you connect different chips (6x/7x/8x, etc) from a family (16C01/16C02) if you study the Tech-Tools catalog a little bit. Andy ================================================================== Andy Kunz - Montana Design - 409 S 6th St - Phillipsburg, NJ 08865 Hardware & Software for Industry & R/C Hobbies "Go fast, turn right, and keep the wet side down!" ==================================================================