JPS5538651A - Address extension mechanism - Google Patents
Address extension mechanismInfo
- Publication number
- JPS5538651A JPS5538651A JP11072478A JP11072478A JPS5538651A JP S5538651 A JPS5538651 A JP S5538651A JP 11072478 A JP11072478 A JP 11072478A JP 11072478 A JP11072478 A JP 11072478A JP S5538651 A JPS5538651 A JP S5538651A
- Authority
- JP
- Japan
- Prior art keywords
- address
- register
- space
- gate
- access
- 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 extend addresses by attaining access to another logical address space by providing a special register which modifies the operand part of an instruction.
CONSTITUTION: When FF3 is set corresponding to an address command clock, an AND gate is opened to generate an address converted into a physical page address through a conversion map corresponding to a logical space number by address register 1 formed of a shift register. On the other hand, a corresponding AND gate is open by FF3 until FF3 is reset and then set next, and access to another space corresponding to B address register 2 modifying an operand part is attained, so that the extension of physical sddresses can be performed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11072478A JPS5538651A (en) | 1978-09-11 | 1978-09-11 | Address extension mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11072478A JPS5538651A (en) | 1978-09-11 | 1978-09-11 | Address extension mechanism |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5538651A true JPS5538651A (en) | 1980-03-18 |
Family
ID=14542874
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11072478A Pending JPS5538651A (en) | 1978-09-11 | 1978-09-11 | Address extension mechanism |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5538651A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58201159A (en) * | 1982-05-19 | 1983-11-22 | Matsushita Electric Ind Co Ltd | Address converter |
-
1978
- 1978-09-11 JP JP11072478A patent/JPS5538651A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58201159A (en) * | 1982-05-19 | 1983-11-22 | Matsushita Electric Ind Co Ltd | Address converter |
JPS6330654B2 (en) * | 1982-05-19 | 1988-06-20 | Matsushita Electric Ind Co Ltd |
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