JPS5553744A - Microprogram storing system - Google Patents
Microprogram storing systemInfo
- Publication number
- JPS5553744A JPS5553744A JP12679078A JP12679078A JPS5553744A JP S5553744 A JPS5553744 A JP S5553744A JP 12679078 A JP12679078 A JP 12679078A JP 12679078 A JP12679078 A JP 12679078A JP S5553744 A JPS5553744 A JP S5553744A
- Authority
- JP
- Japan
- Prior art keywords
- type
- order
- output
- microorder
- word
- 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 realize an effective application of the memory by classifying the miroorder into tow types according to the length of the word and giving the information indicating the type to the specific bit of the order to store the order of the larger word length into the memory in the amount equivalent to two words.
CONSTITUTION: For the microorder, the order featuring the shorter word length is defined as type I, and the order featuring the double word length is defined as type II respectively. Thus the order of type I is stored in one word of program memory MM, and the order of type II is stored in two words of MM each. The highest bit of each microorder shows its type, and 0 and 1 are set for type I and II respectively. At the same time, the lowest bit of type II is set to 1. In such microprogram storing method, when the microorder is read out from MM based on the address shown by output 401 of address register ADR, output 406 of microorder register MIR2 is delivered to buffer BUF in case output 407 of the lowest bit is 1. And not output of MIR2 is vigen to BUF when output 407 is 0.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12679078A JPS5553744A (en) | 1978-10-17 | 1978-10-17 | Microprogram storing system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12679078A JPS5553744A (en) | 1978-10-17 | 1978-10-17 | Microprogram storing system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5553744A true JPS5553744A (en) | 1980-04-19 |
Family
ID=14943997
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12679078A Pending JPS5553744A (en) | 1978-10-17 | 1978-10-17 | Microprogram storing system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5553744A (en) |
-
1978
- 1978-10-17 JP JP12679078A patent/JPS5553744A/en active Pending
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