Atmel AT90S8515-8PI - Data Memory Addressing Modes; Register Direct and IO Direct

AT90S4414/8515
11
Register Direct, Two Registers Rd and Rr
Figure 10. Direct Register Addressing, two registers
Operands are contained in register r (Rr) and d (Rd). The result is stored in register d (Rd).
I/O Direct
Figure 11. I/O Direct Addressing
Operand address is contained in 6 bits of the instruction word. n is the destination or source register address.