JPS5785145A - Address detection system - Google Patents
Address detection systemInfo
- Publication number
- JPS5785145A JPS5785145A JP55162211A JP16221180A JPS5785145A JP S5785145 A JPS5785145 A JP S5785145A JP 55162211 A JP55162211 A JP 55162211A JP 16221180 A JP16221180 A JP 16221180A JP S5785145 A JPS5785145 A JP S5785145A
- Authority
- JP
- Japan
- Prior art keywords
- address
- memory
- break point
- bits
- program
- 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
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/36—Preventing errors by testing or debugging software
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Executing Machine-Instructions (AREA)
- Debugging And Monitoring (AREA)
Abstract
PURPOSE:Not to requre the same number of registers as the number of break point addresses, by using a break point address detection memory so that the break point address is set to said memory. CONSTITUTION:A break point (BP) address to be set is stored in a memory 22. Subsequently, one BP address is read out from the memory 22. A flag 1 is written in an address of a BP address detection memory 14 indicated by lower M bits of the read-out address. Subsequently, a program of a microprocessor unit (MPU) 10 is executed. When the memory 14 is accessed and the BP address is set, an output of the memory 14 becomes ''1'', and the program of the MPU10 is stopped. On the other hand, a controlling circuit 18 is operated, upper L bits of a program address in that case are inputted, also lower M bits are inputted, they are made a BP address of N=M+L, and whether it is present in the memory 22 or not is checked. As a result of said check, if it is present, processing required for debug is executed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55162211A JPS5785145A (en) | 1980-11-18 | 1980-11-18 | Address detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55162211A JPS5785145A (en) | 1980-11-18 | 1980-11-18 | Address detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5785145A true JPS5785145A (en) | 1982-05-27 |
Family
ID=15750071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55162211A Pending JPS5785145A (en) | 1980-11-18 | 1980-11-18 | Address detection system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5785145A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5371894A (en) * | 1991-05-13 | 1994-12-06 | International Business Machines Corporation | Off-chip breakpoint system for a pipelined microprocessor |
| US6477664B1 (en) | 1997-12-30 | 2002-11-05 | Hyundai Electronics Industries Co., Ltd. | Breakpoint interrupt generating apparatus in a superscalar microprocessor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54112138A (en) * | 1978-02-22 | 1979-09-01 | Nichiden Kikai Kk | Coincidence detecting circuit system |
-
1980
- 1980-11-18 JP JP55162211A patent/JPS5785145A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54112138A (en) * | 1978-02-22 | 1979-09-01 | Nichiden Kikai Kk | Coincidence detecting circuit system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5371894A (en) * | 1991-05-13 | 1994-12-06 | International Business Machines Corporation | Off-chip breakpoint system for a pipelined microprocessor |
| US6477664B1 (en) | 1997-12-30 | 2002-11-05 | Hyundai Electronics Industries Co., Ltd. | Breakpoint interrupt generating apparatus in a superscalar microprocessor |
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