Scott Newell wrote: > The Analog Devices fixed point DSP chips are also Harvard > architecture (or is it 'modified' Harvard artchitecture?), but they > were clever enough to include a bus exchange for transferring > between program and data space. They use a dedicated register to > hold the extra byte (program memory is 24 bits, data memory is 16 > bits). > > I've always wondered why Microchip didn't do something similiar. Scott: Microchip DID do something similar... Take a look at the 17Cxx devices. -Andy === Andrew Warren - fastfwd@ix.netcom.com === Fast Forward Engineering - Vista, California === http://www.geocities.com/SiliconValley/2499