#Bit slicer full#
#Bit slicer software#

Silicon chip technology and parts were much more expensive than today. Prior to the mid-1970s and late 1980s there was some debate over how much bus width was necessary in a given computer system to make it function. The first bit-sliced machine was EDSAC 2, built at the University of Cambridge Mathematical Laboratory in 1956–1958. ZFT Robotron/ ZFTM Dresden U840 (1979/1982), unreleasedīit slicing, although not called that at the time, was also used in computers before large-scale integrated circuits (LSI, the predecessor to today's VLSI, or very-large-scale integration circuits).Texas Instruments SN54AS888 / SN74AS888.Four-Phase Systems AL1 (1969, considered to be the first microprocessor used in a commercial product, now discontinued).Raytheon RP-16, a 16-bit processor consisting of seven integrated circuits, using four RALU chips and three CROM chips.Texas Instruments SN74S281 with SN74S282.Texas Instruments SBP0400 (1975) and SBP0401, cascadable up to 16 bits.MMI 5701 / MMI 6701, second-sourced by ITT Semiconductors four RALU chips with one each IMP16A/521D and IMP16A/522D CROM chips (additional optional CROM chips could provide instruction set additionis) National IMP-16, a 16-bit processor based on the IMP chipset, e.g.National IMP-8, an 8-bit processor based on the IMP chipset, using two RALU chips and one CROM chip.National GPC/P / IMP-4 (1973), second-sourced by Rockwell.National IMP family, consisting primarily of the IMP-00A/520 RALU (also known as MM5750) and various masked ROM microcode and control chips (CROMs, also known as MM5751).Signetics 8X02 family (1977, now discontinued).Intel 3002 with Intel 3001, second-sourced by Signetics and Intersil Intel 3000 family (1974, now discontinued), e.g.

The designer could add as many slices as required to manipulate longer word lengths.Ī microsequencer or control ROM would be used to execute logic to provide data and control signals to regulate function of the component ALUs. It would take eight chips to build a 32-bit word ALU. Four 4-bit ALU chips could be used to build a 16-bit ALU. three 1-bit units can make a 3-bit ALU, thus 3-bit (or n-bit) CPU, while 3-bit, or any CPU with higher odd number of bits, hasn't been manufactured and sold in volume). Operational details īit-slice processors (BSPs) usually include 1-, 2-, 4-, 8- or 16-bit arithmetic logic unit (ALU) and control lines (including carry or overflow signals that are internal to the processor in non-bitsliced CPU designs).įor example, two 4-bit ALU chips could be arranged side by side, with control lines between them, to form an 8-bit ALU (result need not be power of two, e.g.

#Bit slicer software#

Recently it has been used in arithmetic logic units (ALUs) for quantum computers and as a software technique, e.g.

#Bit slicer full#

The grouped processing components would then have the capability to process the chosen full word-length of a given software design.īit slicing more or less died out due to the advent of the microprocessor. Each of these component modules processes one bit field or 'slice' of an operand. For more guidance, see Wikipedia:Translation.īit 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).You should also add the template to the talk page.A model attribution edit summary is Content in this edit is translated from the existing Russian Wikipedia article at ] see its history for attribution.

You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation.

If possible, verify the text with references provided in the foreign-language article.

Do not translate text that appears unreliable or low-quality.

Consider adding a topic to this template: there are already 2,738 articles in the main category, and specifying |topic= will aid in categorization.

Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia.