I started reading some documents about the configuration devices EPCS1 & EPCS4. They appear to be programmed with a new download cable, the Byteblaster2. The Byteblaster2 claims compatibility with the previous models, the Byteblaster and the ByteblasterMV. Unfortunately, there is no schematics included in the Byteblaster2 datasheet. Is the 74HC244 being changed to a 74LV244 this time ?
Rene