JPS559253A - Microprogram control unit - Google Patents

Microprogram control unit

Info

Publication number
JPS559253A
JPS559253A JP8118478A JP8118478A JPS559253A JP S559253 A JPS559253 A JP S559253A JP 8118478 A JP8118478 A JP 8118478A JP 8118478 A JP8118478 A JP 8118478A JP S559253 A JPS559253 A JP S559253A
Authority
JP
Japan
Prior art keywords
address
logic
section
address register
microprogram
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
JP8118478A
Other languages
Japanese (ja)
Inventor
Fumio Akiyoshi
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 JP8118478A priority Critical patent/JPS559253A/en
Publication of JPS559253A publication Critical patent/JPS559253A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To reduce the number of interface bits from the microprogram section to the hardware logic section and to make easy the extension.
CONSTITUTION: The microprogram section is constituted so that the hardware logic section can only change RAR address register being the address of ROM memorizing the pattern operated at the occassion. For example, assuming that logic 1 is memorized in the ROM output 27-bit representing the address register at (80)16 address and the logic 0 is memorized in 27-bit represented in the address register (81)16 address, when logic 1 is desired at 27-bit output by the microprogram section, the address register (80)16 address can be designated and if the logic 0 is desired, the address register (81)16 can be designated.
COPYRIGHT: (C)1980,JPO&Japio
JP8118478A 1978-07-04 1978-07-04 Microprogram control unit Pending JPS559253A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8118478A JPS559253A (en) 1978-07-04 1978-07-04 Microprogram control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8118478A JPS559253A (en) 1978-07-04 1978-07-04 Microprogram control unit

Publications (1)

Publication Number Publication Date
JPS559253A true JPS559253A (en) 1980-01-23

Family

ID=13739375

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8118478A Pending JPS559253A (en) 1978-07-04 1978-07-04 Microprogram control unit

Country Status (1)

Country Link
JP (1) JPS559253A (en)

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