Emulation system for emulating CPU core, CPU core with provision for emulation and ASIC having the CPU core
US5594890A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1994 |
| Grant date | Jan 14, 1997 |
| Priority date | — |
| Expiry date | Feb 23, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/3652
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An IC is provided with a CPU core selected from a plurality of CPU cores, each of which has a specific function. Each CPU core has a system-bus terminal and a common emulator connecting-exclusive terminal. The IC is also provided with a predetermined function device connected to a system bus of the selected CPU core. An emulation bus connects an emulator to the selected CPU core via the common emulator connecting-exclusive terminal. An emulator performs emulation on the selected CPU core which is connected via the emulation bus when the selected CPU core is in a monitor mode. The number of terminal elements and the function associated with each terminal element of the common emulator connecting-exclusive terminal are identical among the common emulator connecting-exclusive terminals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.