JPS5561853A - Information processor - Google Patents
Information processorInfo
- Publication number
- JPS5561853A JPS5561853A JP13322978A JP13322978A JPS5561853A JP S5561853 A JPS5561853 A JP S5561853A JP 13322978 A JP13322978 A JP 13322978A JP 13322978 A JP13322978 A JP 13322978A JP S5561853 A JPS5561853 A JP S5561853A
- Authority
- JP
- Japan
- Prior art keywords
- instruction
- word
- executed
- execution
- read out
- 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
Links
Abstract
PURPOSE: To speed up the instruction execution processing by transferring the instruction word read out from the memory storing the instruction word fetched in advance to the microprogram control section directly.
CONSTITUTION: For example, during the execution of the instruction 2, the instruction words 3 and 4 to be executed are read out as one word from the main memory and they are transferred via MBU25. The selector switch 24 selects those two instruction words 3 and 4 with section and transfers them to the instruction buffer IB26a. The instruction word 3 written in IB26a is read out in a suitable timing during the execution of the instruction 2 and transferred to the microprogram control section 21 via DBUS27. The control section 21 selects the address information 3-1 linked to the operation code of the instruction word 3 and stores it. When the microstep of the instruction 2 is finished for execution, since the micro instruction 3-1 at the head of the micro routine corresponding to the instruction word 3 to be executed next is executed, the instruction 3 can be executed without providing the microstep at non-operating condition.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13322978A JPS5561853A (en) | 1978-10-31 | 1978-10-31 | Information processor |
AU50736/79A AU530137B2 (en) | 1978-09-11 | 1979-09-11 | Information processor |
US06/375,702 US4489395A (en) | 1978-09-11 | 1982-05-06 | Information processor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13322978A JPS5561853A (en) | 1978-10-31 | 1978-10-31 | Information processor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5561853A true JPS5561853A (en) | 1980-05-09 |
Family
ID=15099737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13322978A Pending JPS5561853A (en) | 1978-09-11 | 1978-10-31 | Information processor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5561853A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61230655A (en) * | 1985-04-05 | 1986-10-14 | Hitachi Ltd | Brake device for magnetic recording and reproducing device |
JP2011248820A (en) * | 2010-05-31 | 2011-12-08 | Nec Computertechno Ltd | Information processor and microinstruction processing method |
-
1978
- 1978-10-31 JP JP13322978A patent/JPS5561853A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61230655A (en) * | 1985-04-05 | 1986-10-14 | Hitachi Ltd | Brake device for magnetic recording and reproducing device |
JPH0546627B2 (en) * | 1985-04-05 | 1993-07-14 | Hitachi Ltd | |
JP2011248820A (en) * | 2010-05-31 | 2011-12-08 | Nec Computertechno Ltd | Information processor and microinstruction processing method |
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