JPS5447536A - Information processor - Google Patents
Information processorInfo
- Publication number
- JPS5447536A JPS5447536A JP11336877A JP11336877A JPS5447536A JP S5447536 A JPS5447536 A JP S5447536A JP 11336877 A JP11336877 A JP 11336877A JP 11336877 A JP11336877 A JP 11336877A JP S5447536 A JPS5447536 A JP S5447536A
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- signal
- irq
- cpu1
- controller
- 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
- Bus Control (AREA)
Abstract
PURPOSE: To reduce to number of the terminal in the integrated circuit and thus to realize a miniature size of the chip, by using one unit of the terminal in the peripheral integrated circuit for the transmission of the interruption request and the signal which is generated only while the CPU is stopped.
CONSTITUTION: CPU1 is connected to direct memory access controller 2, and controller 2 is connected to other peripheral chips 5W7 via inverter 3a and 3b plus NAND circuit 4a. Then the terminal of interruption output -IRQ is chips 5W7 is connected to the terminal of interruption input -IRQ of CPU1, and the IRQ output terminal of controller 2 is used for transmission of -DEND signal of CPU1. When function switch signal BA of CPU1 is "1", the signal of terminal -IRQ/-DEND of controller 2 is transmitted to -DEND line and is transmitted to -IRQ signal line when signal BA is "0" respectively
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11336877A JPS5447536A (en) | 1977-09-22 | 1977-09-22 | Information processor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11336877A JPS5447536A (en) | 1977-09-22 | 1977-09-22 | Information processor |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3237084A Division JPS6024665A (en) | 1984-02-24 | 1984-02-24 | Semiconductor integrated circuit device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5447536A true JPS5447536A (en) | 1979-04-14 |
Family
ID=14610500
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11336877A Pending JPS5447536A (en) | 1977-09-22 | 1977-09-22 | Information processor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5447536A (en) |
-
1977
- 1977-09-22 JP JP11336877A patent/JPS5447536A/en active Pending
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