JPS5587215A - Control data confirmation system of data processor - Google Patents
Control data confirmation system of data processorInfo
- Publication number
- JPS5587215A JPS5587215A JP16407678A JP16407678A JPS5587215A JP S5587215 A JPS5587215 A JP S5587215A JP 16407678 A JP16407678 A JP 16407678A JP 16407678 A JP16407678 A JP 16407678A JP S5587215 A JPS5587215 A JP S5587215A
- Authority
- JP
- Japan
- Prior art keywords
- control signal
- output
- data bus
- cpu
- signal
- 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
- Debugging And Monitoring (AREA)
Abstract
PURPOSE: To make sure that a control signal is being sent to an input-output device by branching the output of a latch method onto a data bus in response to an indication from CPU.
CONSTITUTION: As for assigned latch circuit LTH, a control signal is sent out via data bus DB and then stored. An output signal from latch circuit LTH is supplied to an input-output device I/O driving stage. Right after the transmission of the control signal, central controller CPU sends a command to a read bus to set flag in flag resister FR and an AND output as to BF2 and FR is sent via data bus DB, so that CPU will make sure of the control signal of the I/O driving stage by receiving the signal of DB.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16407678A JPS5587215A (en) | 1978-12-26 | 1978-12-26 | Control data confirmation system of data processor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16407678A JPS5587215A (en) | 1978-12-26 | 1978-12-26 | Control data confirmation system of data processor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5587215A true JPS5587215A (en) | 1980-07-01 |
Family
ID=15786314
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16407678A Pending JPS5587215A (en) | 1978-12-26 | 1978-12-26 | Control data confirmation system of data processor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5587215A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6476246A (en) * | 1987-09-18 | 1989-03-22 | Fujitsu Ltd | System for testing common bus |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5144839A (en) * | 1974-10-16 | 1976-04-16 | Hitachi Ltd |
-
1978
- 1978-12-26 JP JP16407678A patent/JPS5587215A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5144839A (en) * | 1974-10-16 | 1976-04-16 | Hitachi Ltd |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6476246A (en) * | 1987-09-18 | 1989-03-22 | Fujitsu Ltd | System for testing common bus |
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