I recommend you read ``Using the 68HC11 SPI'' by Karl Lunt, in MicroComputer
Journal May/June 1996.  The article contains an excellent discussion of the
various flavors of SPI in the world.

This issue also has an articl that covers I2C quite well.

Now published by the Bill Gates of Midnight Engineering notariety.

MicroComputer Journal
1700 Washington Ave.
Rocky Ford, CO 81067
(719)254-4558

Karl Lunt
www.seanet.com/~karllunt
karl@mav.com

Peter F. Klammer, Racom Systems Inc.                   PKlammer@ACM.Org
6080 Greenwood Plaza Boulevard                            (303)773-7411
Englewood, CO  80111                                  FAX:(303)771-4708