JPS5654538A - Communication controller - Google Patents
Communication controllerInfo
- Publication number
- JPS5654538A JPS5654538A JP12986779A JP12986779A JPS5654538A JP S5654538 A JPS5654538 A JP S5654538A JP 12986779 A JP12986779 A JP 12986779A JP 12986779 A JP12986779 A JP 12986779A JP S5654538 A JPS5654538 A JP S5654538A
- Authority
- JP
- Japan
- Prior art keywords
- interruption
- register
- program
- start address
- external state
- 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
- Communication Control (AREA)
- Computer And Data Communications (AREA)
Abstract
PURPOSE: To reduce the number of dynamic steps of a program with regard to a communication controller, by analysing and deciding an external state that corresponds to an interruption of the same program interruption level by a hardware means.
CONSTITUTION: When an interruption of a certain program interruption level is made, interruption analyzing circuit 1 sets status display register 2 according to the result of an analysis of and decision on the current external state. For example, bit 2-1 and bit 2-2 of register 2 represent a normal interruption and various abnormal interruptions and with output signal S showing interruption existence from analyzing circuit 1, the contents of register 2 are supplied to the input gate group of instruction address register 5 via gate group 3. In start address constant generating circuit 4, the start address of a program that corresponds to the external state is set up as a constant and the start address of the corresponding program is set in register 5 via the input gate group, thereby performing the interruption processing.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12986779A JPS5654538A (en) | 1979-10-11 | 1979-10-11 | Communication controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12986779A JPS5654538A (en) | 1979-10-11 | 1979-10-11 | Communication controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5654538A true JPS5654538A (en) | 1981-05-14 |
Family
ID=15020244
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12986779A Pending JPS5654538A (en) | 1979-10-11 | 1979-10-11 | Communication controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5654538A (en) |
-
1979
- 1979-10-11 JP JP12986779A patent/JPS5654538A/en active Pending
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