Apparatus and method for performing speculative reads from a scan control unit using FIFO buffer units
US7437623B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2004 |
| Grant date | Oct 14, 2008 |
| Priority date | — |
| Expiry date | Mar 11, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2236
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for debugging a target processor is provided that includes storing a plurality of data values to be sent to the target processor in a first-in first-out (FIFO) buffer unit, saving a copy of an address in a read address counter of the FIFO buffer unit, wherein the address is that of an initial data value of a sequential portion of the plurality of data values, performing a transfer operation to send the sequential portion to the target processor, wherein the read address counter is incremented as each data value is sent. The method also includes resetting the read address counter with the copy of the address if the transfer operation fails and performing the transfer operation again.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.