JPS5497342A - Microprogram control system - Google Patents
Microprogram control systemInfo
- Publication number
- JPS5497342A JPS5497342A JP459878A JP459878A JPS5497342A JP S5497342 A JPS5497342 A JP S5497342A JP 459878 A JP459878 A JP 459878A JP 459878 A JP459878 A JP 459878A JP S5497342 A JPS5497342 A JP S5497342A
- Authority
- JP
- Japan
- Prior art keywords
- memory
- control
- decoder
- information
- commands
- 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 shorten a memory-access latency time by starting access to a control memory for obtaining next-step information nearly at the same time as the execution start of a control step.
CONSTITUTION: Decoder 15 is for general control commands of the kind such as arithmetic control commands among pieces of information read out from control memory 12, and decoder 16 for memory actuation commands of the kinds. Namely, general control commands are decided on one machine cycle by being generated with the decoded output of decoder 15 set to control data register CDR13. On the other hand, some of control information relating to main-memory actuation is generated by directly using the output of decoder 16. Consequently, access to memory 12 for obtaining control information in the next step starts at nearly the same time as the execution start of one control step and the information is sent right after being read out from memory 12, so that the memory-access latency time can be shortened as long as that.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP459878A JPS5497342A (en) | 1978-01-19 | 1978-01-19 | Microprogram control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP459878A JPS5497342A (en) | 1978-01-19 | 1978-01-19 | Microprogram control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5497342A true JPS5497342A (en) | 1979-08-01 |
Family
ID=11588474
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP459878A Pending JPS5497342A (en) | 1978-01-19 | 1978-01-19 | Microprogram control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5497342A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59100256U (en) * | 1982-12-24 | 1984-07-06 | 株式会社小松製作所 | Automatic flaw detection equipment |
-
1978
- 1978-01-19 JP JP459878A patent/JPS5497342A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59100256U (en) * | 1982-12-24 | 1984-07-06 | 株式会社小松製作所 | Automatic flaw detection equipment |
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