发明名称 |
Data processor with speculative instruction fetching and method of operation |
摘要 |
A data processor (12) has a branch prediction unit (28) that predicts conditional branch instructions and a control unit (70) therein that monitors the number of unresolved branch instructions. This control unit selectively allows the data processor to fetch the instructions indicated by the branch prediction unit from an external memory system depending upon the number of unresolved branch instructions. The particular threshold number of unresolved branch instructions is user programmable. The data processor thereby limits its bus accesses to those occasions when it is reasonably sure that it will need the indicated instructions. |
申请公布号 |
GB2284912(B) |
申请公布日期 |
1998.04.22 |
申请号 |
GB19940024323 |
申请日期 |
1994.12.01 |
申请人 |
* MOTOROLA INC |
发明人 |
DANNY K * JAIN;DAVID S * LEVITAN;PAUL C * ROSSBACH |
分类号 |
G06F9/38;(IPC1-7):G06F9/38 |
主分类号 |
G06F9/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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