JPS562048A - Sequence decision system of control memory - Google Patents
Sequence decision system of control memoryInfo
- Publication number
- JPS562048A JPS562048A JP7561879A JP7561879A JPS562048A JP S562048 A JPS562048 A JP S562048A JP 7561879 A JP7561879 A JP 7561879A JP 7561879 A JP7561879 A JP 7561879A JP S562048 A JPS562048 A JP S562048A
- Authority
- JP
- Japan
- Prior art keywords
- block
- μpg
- block number
- blocks
- control memory
- 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 make it possible to detect the cause of the runaway of microprogram μPG in its early stage via additional circuits by dividing a control memory, stored with μPG, into blocks and by employing double contitution for the operand of a branch instruction.
CONSTITUTION: Control memory 1 stored with μPG is divided into blocks of certain size and a branch instruction is constituted as an operand being given a branch destination block number in addition to the address of a branch destination. As additional circuits, block number register 8 which holds the block number of an address input for access to memory 1, block number comparing circuit 12 which compares the held block number to an input block number, and block end detecting circuit 9 which detects a change in block are provided. Through those additiona circuits, a check on blocks is made at every time of the execution of μPG, and consequently the abnormality of the sequence of μPG can be found, block by block, so that the analysis of the cause of a fault and recovery processing can be simplified.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7561879A JPS562048A (en) | 1979-06-18 | 1979-06-18 | Sequence decision system of control memory |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7561879A JPS562048A (en) | 1979-06-18 | 1979-06-18 | Sequence decision system of control memory |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS562048A true JPS562048A (en) | 1981-01-10 |
Family
ID=13581369
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7561879A Pending JPS562048A (en) | 1979-06-18 | 1979-06-18 | Sequence decision system of control memory |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS562048A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61251630A (en) * | 1985-05-01 | 1986-11-08 | Toa Nenryo Kogyo Kk | Method of recovering lower olefin with adsorbent |
-
1979
- 1979-06-18 JP JP7561879A patent/JPS562048A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61251630A (en) * | 1985-05-01 | 1986-11-08 | Toa Nenryo Kogyo Kk | Method of recovering lower olefin with adsorbent |
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