JPS55110349A - Test processing system of one-chip microprocessor - Google Patents
Test processing system of one-chip microprocessorInfo
- Publication number
- JPS55110349A JPS55110349A JP897879A JP897879A JPS55110349A JP S55110349 A JPS55110349 A JP S55110349A JP 897879 A JP897879 A JP 897879A JP 897879 A JP897879 A JP 897879A JP S55110349 A JPS55110349 A JP S55110349A
- Authority
- JP
- Japan
- Prior art keywords
- vote
- instruction
- output
- synchronizing
- clock
- 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.)
- Granted
Links
Landscapes
- Test And Diagnosis Of Digital Computers (AREA)
- Microcomputers (AREA)
Abstract
PURPOSE: To enable a relatively-easy internal state check by exercising a supervision over arithmetic processing results on an external output bus.
CONSTITUTION: The processing of processor 1 is carried out synchronizing with clocks ϕ1 and ϕ2. Synchronizing with clock ϕ1, #1 instruction, vote output instruction, #3 instruction, etc., are read out from instruction storage memory 2, and synchronizing with clock ϕ2, processing results corresponding to respective instructions appear at terminals O0WO3 of output vote 16. Arithmetic results at terminals of output vote 16 are supervised on external output bus 17. Once the vote output instruction arrives, indication signal PLC is supplied and the vote output result is latched by latch circuits 4-0 and 4-1 via 3 synchronizing with clock ϕ2. The internal state of the microprocessor can therefore be checked easily.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54008978A JPS594051B2 (en) | 1979-01-29 | 1979-01-29 | One-chip microprocessor test processing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54008978A JPS594051B2 (en) | 1979-01-29 | 1979-01-29 | One-chip microprocessor test processing method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55110349A true JPS55110349A (en) | 1980-08-25 |
JPS594051B2 JPS594051B2 (en) | 1984-01-27 |
Family
ID=11707771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54008978A Expired JPS594051B2 (en) | 1979-01-29 | 1979-01-29 | One-chip microprocessor test processing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS594051B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57141760A (en) * | 1981-02-25 | 1982-09-02 | Nec Corp | Semiconductor information processor |
JPS59211123A (en) * | 1983-05-16 | 1984-11-29 | Nec Corp | Semiconductor integrated circuit |
JPS63121934A (en) * | 1986-11-10 | 1988-05-26 | Oki Electric Ind Co Ltd | One-chip microcomputer for evaluation |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61169941A (en) * | 1985-01-22 | 1986-07-31 | Sony Corp | Memory device |
-
1979
- 1979-01-29 JP JP54008978A patent/JPS594051B2/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57141760A (en) * | 1981-02-25 | 1982-09-02 | Nec Corp | Semiconductor information processor |
JPS6342299B2 (en) * | 1981-02-25 | 1988-08-23 | Nippon Electric Co | |
JPS59211123A (en) * | 1983-05-16 | 1984-11-29 | Nec Corp | Semiconductor integrated circuit |
JPS63121934A (en) * | 1986-11-10 | 1988-05-26 | Oki Electric Ind Co Ltd | One-chip microcomputer for evaluation |
US4969087A (en) * | 1986-11-10 | 1990-11-06 | Oki Electric Industry Co., Ltd. | Single-chip microcomputer |
US5088027A (en) * | 1986-11-10 | 1992-02-11 | Oki Electric Industry Co., Ltd. | Single-chip microcomputer |
Also Published As
Publication number | Publication date |
---|---|
JPS594051B2 (en) | 1984-01-27 |
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