JPS54156434A - Jump system between pages - Google Patents
Jump system between pagesInfo
- Publication number
- JPS54156434A JPS54156434A JP6595878A JP6595878A JPS54156434A JP S54156434 A JPS54156434 A JP S54156434A JP 6595878 A JP6595878 A JP 6595878A JP 6595878 A JP6595878 A JP 6595878A JP S54156434 A JPS54156434 A JP S54156434A
- Authority
- JP
- Japan
- Prior art keywords
- register
- timing
- delay circuit
- executed
- page
- 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
Landscapes
- Executing Machine-Instructions (AREA)
Abstract
PURPOSE: To enable to extend the address space storing the program, by providing the register and delay circuit designating the page to be jumped between the microprocessor and the memory.
CONSTITUTION: The microprocessor μP1 outputs the data to be set to the location page register 3. When the decoder 5 receives this set timing, it delivers the data latch timing to the buffer register 4 and also starts the delay circuit 6. In this timing, the register 4 latches the address to be set to the register 3. Next, the μP1 executes the jump instruction. The delay circuit 6 delays the signal outputted from the decoder 5 until the jump instruction is executed, to deliver the signal writing in the content of the register 4 to the register 3. With the timing of this signal, the content of the register 3 is rewritten in the page address storing the program next executed. Thus, the jump between pages can be executed.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6595878A JPS54156434A (en) | 1978-05-30 | 1978-05-30 | Jump system between pages |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6595878A JPS54156434A (en) | 1978-05-30 | 1978-05-30 | Jump system between pages |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54156434A true JPS54156434A (en) | 1979-12-10 |
Family
ID=13301994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6595878A Pending JPS54156434A (en) | 1978-05-30 | 1978-05-30 | Jump system between pages |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54156434A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58123142A (en) * | 1982-01-19 | 1983-07-22 | Nec Corp | Information processor |
JPH01204147A (en) * | 1988-02-09 | 1989-08-16 | Toshiba Corp | Address qualifying circuit |
-
1978
- 1978-05-30 JP JP6595878A patent/JPS54156434A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58123142A (en) * | 1982-01-19 | 1983-07-22 | Nec Corp | Information processor |
JPH01204147A (en) * | 1988-02-09 | 1989-08-16 | Toshiba Corp | Address qualifying circuit |
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