JPS5736343A - Operation processing circuit - Google Patents

Operation processing circuit

Info

Publication number
JPS5736343A
JPS5736343A JP11203180A JP11203180A JPS5736343A JP S5736343 A JPS5736343 A JP S5736343A JP 11203180 A JP11203180 A JP 11203180A JP 11203180 A JP11203180 A JP 11203180A JP S5736343 A JPS5736343 A JP S5736343A
Authority
JP
Japan
Prior art keywords
shift
processing circuit
operation processing
byte
bit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11203180A
Other languages
Japanese (ja)
Inventor
Toshikatsu Nagasawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP11203180A priority Critical patent/JPS5736343A/en
Publication of JPS5736343A publication Critical patent/JPS5736343A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F5/00—Methods or arrangements for data conversion without changing the order or content of the data handled
    • G06F5/01—Methods or arrangements for data conversion without changing the order or content of the data handled for shifting, e.g. justifying, scaling, normalising

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To realize shift functions with less number of gates and to simplify the operation processing circuit, by dividing shift functions into two stages, and performing left and right shift on each byte at the first stage, the left shifts on each bit at the second stage. CONSTITUTION:This operation processing circuit is configured with 8 bits data selecting circits 7 and 8 which perform shifts on each byte, 2 bits data selecting circuits 9, 10, 11 and 12 which perform shifts on each bit, 2 inputs exclusive-OR circuits 14-18, and all adders 20-22. When a leftward n-bit shift is made, the shift is performed so that (n) may become n=B.k+m, 0<=m<=(B-1), where the B is number of shift of 1 byte, the (k) is number of byte, and the number of shift is positive. Moreover, when a rightward n-bit shift is made, the shift is performed so that (n) will become -n=B.k+m, 1<=m<=B, where the number of shift is negative. In this way, shift functions are made with less number of gates and the operation processing circuit is simplified.
JP11203180A 1980-08-13 1980-08-13 Operation processing circuit Pending JPS5736343A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11203180A JPS5736343A (en) 1980-08-13 1980-08-13 Operation processing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11203180A JPS5736343A (en) 1980-08-13 1980-08-13 Operation processing circuit

Publications (1)

Publication Number Publication Date
JPS5736343A true JPS5736343A (en) 1982-02-27

Family

ID=14576266

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11203180A Pending JPS5736343A (en) 1980-08-13 1980-08-13 Operation processing circuit

Country Status (1)

Country Link
JP (1) JPS5736343A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58144947A (en) * 1982-02-23 1983-08-29 Toshiba Corp Data shifting system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58144947A (en) * 1982-02-23 1983-08-29 Toshiba Corp Data shifting system

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