Development and debug tool for microcomputers
US5047926A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1989 |
| Grant date | Sep 10, 1991 |
| Priority date | — |
| Expiry date | Mar 15, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/3656
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A debug interface for use in debugging a microprocessor during development. The debug interface is connected with a host computer for the bidirectional data transmissions and utilizes a ROM socket on the object system to communicate with the object system being debugged. The object system can read data from the debug interface only, but cannot write data thereto. The testing software program in the host computer is entered into an SRAM on the debug interface through a host computer data bus. When the content of the registers in the object system is required by the software, the data needed are dumped onto the object system address bus by software techniques; then through an input port, connecting the object system address bus to the host computer data bus, the data can be received by the host computer, and so displayed on the monitor of the host computer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.