JPS5495129A - Information processing unit - Google Patents

Information processing unit

Info

Publication number
JPS5495129A
JPS5495129A JP199678A JP199678A JPS5495129A JP S5495129 A JPS5495129 A JP S5495129A JP 199678 A JP199678 A JP 199678A JP 199678 A JP199678 A JP 199678A JP S5495129 A JPS5495129 A JP S5495129A
Authority
JP
Japan
Prior art keywords
address
operand
control signal
control part
extends
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.)
Granted
Application number
JP199678A
Other languages
Japanese (ja)
Other versions
JPS6053895B2 (en
Inventor
Tsuneo Urashiro
Kenji Hayashi
Chikahiko Izumi
Hiroo Miyadera
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP53001996A priority Critical patent/JPS6053895B2/en
Publication of JPS5495129A publication Critical patent/JPS5495129A/en
Publication of JPS6053895B2 publication Critical patent/JPS6053895B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/34—Addressing or accessing the instruction operand or the result ; Formation of operand address; Addressing modes
    • G06F9/342—Extension of operand address space
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/32—Address formation of the next instruction, e.g. by incrementing the instruction counter

Landscapes

  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Executing Machine-Instructions (AREA)
  • Memory System (AREA)

Abstract

PURPOSE:To change the address effective range of an instruction address and the effective range of an operand address at an address generation time by causing a control signal, which extends the operand from an mode control part, to generate another control signal which extends these ragnes. CONSTITUTION:Address data 16 from instruction fetch control part 22, address data 17 from operand fetch control part 23, and address data 18 from execution part 24 are inputted to the selector circuit of memory control part 25, and one of them is selected as address data 8 in a control circuit. When the reguest from control part 23 or execution part 24 is selected by priority order dtermination circuit 9, control signal 20 is issued, and control signal 12 which extends the operand from mode control part 21 generates a control signal, which extends ranges, by AND circuit 11. As a result, the address effective range of an instruction address and the address effective range of an operand address can be changed at an address generation time.
JP53001996A 1978-01-13 1978-01-13 information processing equipment Expired JPS6053895B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53001996A JPS6053895B2 (en) 1978-01-13 1978-01-13 information processing equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53001996A JPS6053895B2 (en) 1978-01-13 1978-01-13 information processing equipment

Publications (2)

Publication Number Publication Date
JPS5495129A true JPS5495129A (en) 1979-07-27
JPS6053895B2 JPS6053895B2 (en) 1985-11-27

Family

ID=11517055

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53001996A Expired JPS6053895B2 (en) 1978-01-13 1978-01-13 information processing equipment

Country Status (1)

Country Link
JP (1) JPS6053895B2 (en)

Also Published As

Publication number Publication date
JPS6053895B2 (en) 1985-11-27

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