AT90S1200
Program and Data
Addressing Modes
The AT90S1200 AVR RISC Microcontroller supports powerful and efficient addressing
modes. This section describes the different addressing modes supported in the
AT90S1200. In the figures, OP means the operation code part of the instruction word.
To simplify, not all figures show the exact location of the addressing bits.
Register Direct, Single
Register Rd
Figure 6. Direct Single Register Addressing
The operand is contained in register d (Rd).
Register Indirect
Figure 7. Indirect Register Addressing
The register accessed is the one pointed to by the Z-register (R30).
Register Direct, Two Registers Figure 8. Direct Register Addressing, Two Registers
Rd and Rr
7
0838H–AVR–03/02
ATMEL [ ATMEL ]
