Что (кто) такое bit-slice microprocessor - определение
COMPUTER TECHNIQUE
Bit slice; Bit slice processor; Bit-slice; Bitslice microprocessor technology; Bit-slice processor; Bit slice processors; ALU slice; Slice ALU; ALU Slice; Bit-slice ALU; Bit-slice CPU; Bit slice ALU; Bit slice CPU; 2-bit architecture; Bit-slicing; Slice cascadable processor; Slice processor; Cascadable ALU; Bit slice microprocessor; Bit-slice microprocessor; Bitslice; Bitslicing; 2-bit computing
Bit slicing
Bit slicing is a technique for constructing a processor from modules of processors of smaller bit width, for the purpose of increasing the word length; in theory to make an arbitrary n-bit central processing unit (CPU). Each of these component modules processes one bit field or "slice" of an operand.
bit slice
<architecture> A technique for constructing a processor from
modules, each of which processes one bit-field or "slice" of
an operand. Bit slice processors usually consist of an
ALU of 1, 2, 4 or 8 bits and control lines (including
carry or overflow signals usually internal to the CPU).
For example, two 4-bit ALUs could be arranged side by side,
with control lines between them, to form an 8-bit ALU. A
sequencer executes a program to provide data and control
signals.
The AMD Am2901 is an example.
(1994-11-15)
32-bit application
COMPUTER ARCHITECTURE BIT WIDTH
32-bit application; 32 bit application; 32 bit; 32bit; 32-Bit Machine Computer; Computer, 32-Bit Machine; 32-bit computer; 32-Bit; 32-bit processing; 32-bit version; 32-bit processor; 32-bit CPU; 32 bits; 32 bit microprocessors; 32-bit architecture; 32 bit microprocessor; 32-bit microprocessors; 32-bit; 32-bit microprocessor; 32-bit file format; 32-bit integer
<architecture, operating system> IBM PC software that runs
in a 32-bit flat address space.
The term 32-bit application came about because MS-DOS and
Microsoft Windows were originally written for the {Intel
8088} and 80286 microprocessors. These are 16 bit
microprocessors with a segmented address space. Programs
with more than 64 kilobytes of code and/or data therefore had
to switch between segments quite frequently. As this
operation is quite time consuming in comparison to other
machine operations, the application's performance may suffer.
Furthermore, programming with segments is more involved than
programming in a flat address space, giving rise to some
complications in programming languages like "memory models"
in C and C++.
The shift from 16-bit software to 32-bit software on IBM PC
clones became possible with the introduction of the {Intel
80386} microprocessor. This microprocessor and its successors
support a segmented address space with 16-bit and 32 bit
segments (more precisely: segments with 16- or 32-bit address
offset) or a linear 32-bit address space. For compatibility
reasons, however, much of the software is nevertheless written
in 16-bit models.
Operating systems like Microsoft Windows or OS/2 provide
the possibility to run 16-bit (segmented) programs as well as
32-bit programs. The former possibility exists for {backward
compatibility} and the latter is usually meant to be used for
new software development.
See also Win32s.
(1995-12-11)
Википедия
Bit slicing
Bit slicing is a technique for constructing a processor from modules of processors of smaller bit width, for the purpose of increasing the word length; in theory to make an arbitrary n-bit central processing unit (CPU). Each of these component modules processes one bit field or "slice" of an operand. The grouped processing components would then have the capability to process the chosen full word-length of a given software design.
Bit slicing more or less died out due to the advent of the microprocessor. Recently it has been used in arithmetic logic units (ALUs) for quantum computers and as a software technique, e.g. for cryptography in x86 CPUs.
