JPS6432340A - Microprogram controller - Google Patents
Microprogram controllerInfo
- Publication number
- JPS6432340A JPS6432340A JP18943187A JP18943187A JPS6432340A JP S6432340 A JPS6432340 A JP S6432340A JP 18943187 A JP18943187 A JP 18943187A JP 18943187 A JP18943187 A JP 18943187A JP S6432340 A JPS6432340 A JP S6432340A
- Authority
- JP
- Japan
- Prior art keywords
- branch
- address
- routines
- instruction code
- microinstruction
- 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 utilize the original branch of an instruction code within a branching destination routine by using a branching destination address selected by a selecting means to perform the branch of the instruction code. CONSTITUTION:By indicating a C1 address with a program counter PC12, a branch microinstruction is read out of a microprogram memory MROS11 to a microinstruction register RDD13. Then an active signal mu-BRANCH is outputted from a decoder DCR14 and led to a selector 19. Thus the side of the RDR13 is selected and the processing routine is branched to a C2 or C6 address. Therefore the branches are possible to the difference routines by the OPJ1 microinstructions in the routines at the C2 address and subsequent addresses by performing the OPJ in the routines at the C6 address and subsequent addresses by means of an instruction code branch OPJ2 microinstruction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18943187A JPS6432340A (en) | 1987-07-29 | 1987-07-29 | Microprogram controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18943187A JPS6432340A (en) | 1987-07-29 | 1987-07-29 | Microprogram controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6432340A true JPS6432340A (en) | 1989-02-02 |
Family
ID=16241134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18943187A Pending JPS6432340A (en) | 1987-07-29 | 1987-07-29 | Microprogram controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6432340A (en) |
-
1987
- 1987-07-29 JP JP18943187A patent/JPS6432340A/en active Pending
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