Epson ARM.POWERED ARM720T - Manual (Page 211)

Glossary
ARM720T CORE CPU MANUAL EPSON Glossary-1
Glossary
This glossary describes some of the terms used in this manual. Where terms can have several
meanings, the meaning presented here is intended.
Abort
Is caused by an illegal memory access. Abort can be caused by the external
memory system, an external MMU, or the EmbeddedICE-RT logic.
Addressing modes
A procedure shared by many different instructions, for generating values
used by the instructions. For four of the ARM addressing modes, the values
generated are memory addresses (which is the traditional role of an
addressing mode). A fifth addressing mode generates values to be used as
operands by data-processing instructions.
Arithmetic Logic Unit
The part of a computer that performs all arithmetic computations, such as
addition and multiplication, and all comparison operations.
ALU
See Arithmetic Logic Unit.
ARM state
A processor that is executing ARM (32-bit) instructions is operating in
ARM state.
Big-endian
Memory organization where the least significant byte of a word is at a
higher address than the most significant byte.
Banked registers
Register numbers whose physical register is defined by the current
processor mode. The banked registers are registers r8 to r14, or r13 to r14,
depending on the processor mode.
Breakpoint
A location in the program. If execution reaches this location, the debugger
halts execution of the code image.
See also Watchpoint.
CISC
See Complex Instruction Set Computer.