JPS5541565A - Address modification system - Google Patents
Address modification systemInfo
- Publication number
- JPS5541565A JPS5541565A JP11527178A JP11527178A JPS5541565A JP S5541565 A JPS5541565 A JP S5541565A JP 11527178 A JP11527178 A JP 11527178A JP 11527178 A JP11527178 A JP 11527178A JP S5541565 A JPS5541565 A JP S5541565A
- Authority
- JP
- Japan
- Prior art keywords
- modification
- signals
- index
- base
- logical operation
- 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 address modification high-speed by using a two-input adder to omit one of the number of addition times in case that one of base modification and index modification or both of them are not required.
CONSTITUTION: Decoding logical operation circuit 53 decodes bit patterns of base register number designation part 8 and index register number designation part 9 and discriminates that one of the base modification and index modification or both of them are not subjected to address modification and applies signals to control logical operation circuit 54. Fundamental clocks, start signals, base modification signals and index modification signals are applied to control circuit 54 from decoding logical operation circuit 53, and circuit 54 outputs control signal 45 to 50 and end signal 51.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11527178A JPS5541565A (en) | 1978-09-20 | 1978-09-20 | Address modification system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11527178A JPS5541565A (en) | 1978-09-20 | 1978-09-20 | Address modification system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5541565A true JPS5541565A (en) | 1980-03-24 |
Family
ID=14658525
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11527178A Pending JPS5541565A (en) | 1978-09-20 | 1978-09-20 | Address modification system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5541565A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6079431A (en) * | 1983-10-06 | 1985-05-07 | Hitachi Ltd | Programmable controller |
JPS60176152A (en) * | 1984-02-23 | 1985-09-10 | Fujitsu Ltd | Prefix area access control system |
JPS6386032A (en) * | 1986-09-30 | 1988-04-16 | Toshiba Corp | Effective address calculating device |
-
1978
- 1978-09-20 JP JP11527178A patent/JPS5541565A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6079431A (en) * | 1983-10-06 | 1985-05-07 | Hitachi Ltd | Programmable controller |
JPH024010B2 (en) * | 1983-10-06 | 1990-01-25 | Hitachi Ltd | |
JPS60176152A (en) * | 1984-02-23 | 1985-09-10 | Fujitsu Ltd | Prefix area access control system |
JPS6386032A (en) * | 1986-09-30 | 1988-04-16 | Toshiba Corp | Effective address calculating device |
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