发明公开
EP0377845A2 Apparatus for determining if there is a loss of data during a shift operation
失效
Gerätum festzustellen，obwährendeiner Verschiebungsoperation Daten in Verlust geraten。
- 专利标题： Apparatus for determining if there is a loss of data during a shift operation
- 专利标题（中）： Gerätum festzustellen，obwährendeiner Verschiebungsoperation Daten in Verlust geraten。
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申请号： EP89122989.0申请日： 1989-12-13
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公开(公告)号： EP0377845A2公开(公告)日： 1990-07-18
- 发明人: Cook, Peter William , Montoye, Robert Kevin
- 申请人： International Business Machines Corporation
- 申请人地址： Old Orchard Road Armonk, N.Y. 10504 US
- 专利权人： International Business Machines Corporation
- 当前专利权人： International Business Machines Corporation
- 当前专利权人地址： Old Orchard Road Armonk, N.Y. 10504 US
- 代理机构： Jost, Ottokarl, Dipl.-Ing.
- 优先权： US297639 19890113
- 主分类号： G06F5/01
- IPC分类号： G06F5/01 ; G06F7/48
摘要：
Apparatus for shifting and determining if during the shifting of data there has been a loss of precision due to the loss of one or more data bits due to overflow. A small data field is shifted into a much larger data field. The width of the switching mechanism used is based on the number of bits in the small data field. Loss of data is determined in part by ORing the control signals utilized to shift the small data field to the large data field.
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