AVR-RISC evaluation system (1):

Atmel’s AT90S1200 AVR-RISC 8-bit RISC processor has been available for some time now, and is generally recognised as a very fast device. The price, too, is good at less than £3 even in the hobby market. So, substituting a couple of logic ICs (and their sockets) by an AVR device may already pay off. The most interesting aspect of this processor is, however, that it features a serial interface with direct access to the on-chip memory. The general concept of the AVR processor was already discussed in our January 1998 magazine. The present article aims at showing some more practical applications of the 90S1200, using easy to obtain hardware and software.