Chapter 6 Sam88Rcri Instruction Set; Overview; Register Addressing; Addressing Modes - Samsung S3C9444 User Manual

8-bit cmos microcontrollers

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S3C9444/F9444_UM_REV1.10

SAM88RCRI INSTRUCTION SET

The SAM88RCRI instruction set is designed to support the large register file. It includes a full complement of

8-bit arithmetic and logic operations. There are 41 instructions. No special I/O instructions are necessary because

I/O control and data registers are mapped directly into the register file. Flexible instructions for bit addressing, rotate,

and shift operations complete the powerful data manipulation capabilities of the SAM88RCRI instruction set.

To access an individual register, an 8-bit address in the range 0-255 or the 4-bit address of a working register is

specified. Paired registers can be used to construct 13-bit program memory or data memory addresses. For

detailed information about register addressing, please refer to Chapter 2, "Address Spaces".

There are six addressing modes: Register (R), Indirect Register (IR), Indexed (X), Direct (DA), Relative (RA), and

Immediate (IM). For detailed descriptions of these addressing modes, please refer to Chapter 3, "Addressing

Modes".

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