JPS55134450A - Microprogram control unit - Google Patents
Microprogram control unitInfo
- 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
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
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)
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 |
-
1979
- 1979-04-04 JP JP4066579A patent/JPS55134450A/en active Pending
Cited By (1)
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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