2.2. Register Direct - Two Registers, Rd and Rr
Figure 2-2. Direct Register Addressing, Two Registers
Operands are contained in register r (Rr) and d (Rd). The result is stored in register d (Rd).
2.3. I/O Direct
Figure 2-3. I/O Direct Addressing
Operand address is contained in six bits of the instruction word. n is the destination or source register
address.
Note: Some complex AVR Microcontrollers have more peripheral units than can be supported within the
64 locations reserved in the opcode for I/O direct addressing. The extended I/O memory from address 64
to 255 can only be reached by data addressing, not I/O addressing.
Atmel AVR Instruction Set Manual [OTHER]
Atmel-0856L-AVR-Instruction-Set-Manual_Other-11/2016
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