JPS55134450A - Microprogram control unit - Google Patents

Microprogram control unit

Info

Publication number
JPS55134450A
JPS55134450A JP4066579A JP4066579A JPS55134450A JP S55134450 A JPS55134450 A JP S55134450A JP 4066579 A JP4066579 A JP 4066579A JP 4066579 A JP4066579 A JP 4066579A JP S55134450 A JPS55134450 A JP S55134450A
Authority
JP
Japan
Prior art keywords
address
register
counter
output signal
stored
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
JP4066579A
Other languages
Japanese (ja)
Inventor
Michito Takahashi
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 JP4066579A priority Critical patent/JPS55134450A/en
Publication of JPS55134450A publication Critical patent/JPS55134450A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To change the execution order of instructions without an unconditional branch instruction, by selecting the output signal of an address counter and the signal from the address indication part in a micro instruction register and by supplying them as the address of a memory part.
CONSTITUTION: An instruction read from micro instruction memory part 11 where many instructions to control an information processing unit are stored is stored in micro instruction register 12, and the address value from the address part in register 12 is not only stored in address counter 13 but also applied to selector 14. This counter 13 is provided with a function to increase its own contents by +1, and the address value from register 12 is increased by +1, and output signal 401 of counter 13 is applied to selector 14. Then, output signal 401 of counter 13 or output signal 402 from register 12 is selected and is applied to memory part 11, thus changing the execution order of instructions without an unconditional branch instruction.
COPYRIGHT: (C)1980,JPO&Japio
JP4066579A 1979-04-04 1979-04-04 Microprogram control unit Pending JPS55134450A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4066579A JPS55134450A (en) 1979-04-04 1979-04-04 Microprogram control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4066579A JPS55134450A (en) 1979-04-04 1979-04-04 Microprogram control unit

Publications (1)

Publication Number Publication Date
JPS55134450A true JPS55134450A (en) 1980-10-20

Family

ID=12586818

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4066579A Pending JPS55134450A (en) 1979-04-04 1979-04-04 Microprogram control unit

Country Status (1)

Country Link
JP (1) JPS55134450A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01166131A (en) * 1987-11-05 1989-06-30 Raytheon Co Next micro-command generator of micro-program controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01166131A (en) * 1987-11-05 1989-06-30 Raytheon Co Next micro-command generator of micro-program controller

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