SPMC68CK338CPV14 datasheet(51/133 Pages) FREESCALE

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MC68CK338

MOTOROLA

MC68CK338TS/D

4.4 Data Types

Six basic data types are supported:

• Bits

• Packed Binary Coded Decimal Digits

• Byte Integers (8 bits)

• Word Integers (16 bits)

• Long Word Integers (32 bits)

• Quad Word Integers (64 bits)

4.5 Addressing Modes

Addressing in the CPU32L is register-oriented. Most instructions allow the results of the specified op-

eration to be placed either in a register or directly in memory. This flexibility eliminates the need for extra

instructions to store register contents in memory. The CPU32L supports seven basic addressing

modes:

• Register direct

• Register indirect

• Register indirect with index

• Program counter indirect with displacement

• Program counter indirect with index

• Absolute

• Immediate

Included in the register indirect addressing modes are the capabilities to post-increment, predecrement,

and offset. The program counter relative mode also has index and offset capabilities. In addition to

these addressing modes, many instructions implicitly specify the use of the status register, stack point-

er, or program counter.

4.6 Instruction Set Summary

Table 33 provides a summary of the CPU32L instruction set.

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SPMC68CK338CPV14 Datasheet(PDF) 51 Page - Freescale Semiconductor, Inc