mc68ec030 Freescale Semiconductor, Inc, mc68ec030 Datasheet - Page 8

• Manufacturer Part Number: mc68ec030
• Description: Second-generation 32-bit Enhanced Embedded Controller
• Manufacturer: Freescale Semiconductor, Inc

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In addition, operations on other data types, such as memory addresses, status word data, etc., are
provided in the instruction set. The coprocessor mechanism allows direct support of floating-point data
types with the MC68881/MC68882 floating-point coprocessors as well as specialized user-defined data
types and functions. The 18 addressing modes, listed in Table 1, include nine basic types:
The register indirect addressing modes support postincrement, predecrement, offset, and indexing.
These capabilities are particularly useful for handling advanced data structures common to sophisticated
applications and high-level languages. The program counter relative mode also has index and offset
capabilities; this addressing mode is generally required to support position- independent software. In
addition to these addressing modes, the MC68EC030 provides data operand sizing and scaling; these
features provide performance enhancements to the programmer.
• Register Direct
• Register Indirect
• Register Indirect with Index
• Memory Indirect
• Program Counter Indirect with Displacement
• Program Counter Indirect with Index
• Program Counter Memory Indirect
• Absolute
• Immediate
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