Epson ARM720T Manuel D’Utilisation

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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.