ST10

Direct Memory Access uses the ST10 MAC for address generation in external memory-external memory transfers. This application note supplies the machine code for external memory - ST10 internal memory transfers, and for external memory-external memory transfers made by Direct Memory Access using the MAC. For reference, the ST10 long addressing mode is summarized.

The ST10 instruction set contains special MAC instructions and two new addressing modes which supply the MAC with up to 2 new operands per instruction. The MAC contains a 16x16 multiplier, 40 bit accumulator a repeat unit and an address generator.