ST20-C1 STMICROELECTRONICS [STMicroelectronics], ST20-C1 Datasheet - Page 187
ST20-C1
Manufacturer Part Number
ST20-C1
Description
Instruction Set Reference Manual
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.ST20-C1.pdf
(205 pages)
- Current page: 187 of 205
- Download datasheet (842Kb)
D Glossary
Active process
Address
Address space
Areg
Arithmetic shift
Array
Bit
Bitwise operation
Boolean
Breg
Byte
Cache
Channel
An active process in a multi-tasking program is one that is either executing or
waiting for CPU time. It may have been interrupted or trapped or it may be waiting
on a scheduling queue .
A 32-bit integer used to identify one byte of memory or memory-mapped device.
ST20 addresses are signed, i.e. the address range is the same as the range of a
signed 32-bit integer. A pointer .
The range of valid addresses.
The 32-bit register at the top of the evaluation stack .
A shift in which the sign bit is preserved. An arithmetic right shift copies the sign bit
into the vacated bits.
A data structure in which all the elements are of the same type and are identified
by a non-negative integer subscript. A vector .
A binary digit, which can take the value 1 (also called set or true) or 0 (also called
clear or false).
An operation on multi-bit values which treats each bit as a true (if set ) or false (if
clear ).
Logic values and calculations using AND, OR, and NOT. A multi-bit value is treated
as Boolean if it represents a single true of false value, as opposed to bitwise .
The 32-bit register in the middle of the evaluation stack .
An 8-bit value or location.
Fast memory used to temporarily hold copies of slow memory locations in order to
provide high performance memory access with slow memory.
A synchronous, one-way, point-to-point, unbuffered communications mechanism.
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