Breakpoint detection circuit in a data processor and method therefor
US5717851A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1994 |
| Grant date | Feb 10, 1998 |
| Priority date | — |
| Expiry date | Aug 15, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/3648
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Existing chip select comparator logic (42) is used to compare a portion of the address value with a range of chip select addresses to provide a match signal for use by both the chip select logic (70) and a breakpoint logic circuit (50.x). The match signal is generated by the chip select logic circuit and is reused by the breakpoint logic circuit to perform a different and distinct function. By using the match signal and a breakpoint enable bit, the breakpoint logic circuit selectively asserts a breakpoint signal. Subsequently, a central processing unit (12) receives the breakpoint signal and initiates a breakpoint exception operation to determine whether the breakpoint condition is met and whether further action should be taken.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.