Addressing Modes - Samsung S3F84B8 User Manual

S3F84B8_UM_REV 1.00
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ADDRESSING MODES

3.1 OVERVIEW OF ADDRESSING MODES
The program counter fetches the instructions stored in the program memory for execution. These instructions
indicate the operation to be performed and the data to be operated on. Addressing mode is the method used to
determine the location of the data operand. The operands specified in SAM8RC instructions can include: condition
codes, immediate data, or a location in the register file, program memory, or data memory.
The S3C-series instruction set supports seven explicit addressing modes. Not all of these addressing modes are
available for each instruction. The seven addressing modes and their symbols are:

Register (R)

Indirect Register (IR)

Indexed (X)

Direct Address (DA)

Indirect Address (IA)

Relative Address (RA)

Immediate (IM)
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3 ADDRESSING MODES