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1. 发明授权

US5465332A Selectable 8/16 bit DMA channels for "ISA" bus 失效
标题翻译： “ISA”总线可选择8/16位DMA通道
公开(公告)号：US5465332A
公开(公告)日：1995-11-07
申请号：US947680
申请日：1992-09-21
申请人： Michael J. Deloye , Daniel P. Fuoco , Dennis L. Moeller
发明人： Michael J. Deloye , Daniel P. Fuoco , Dennis L. Moeller
IPC分类号： G06F13/28 , G06F13/00 , H01J3/00
CPC分类号： G06F13/28
摘要： In a personal computing system the function of the DMA controllers in the "AT" or "ISA" bus has been modified so that the system may select whether the 16-bit DMA channels are to be used as 8-bit DMA channels or 16-bit DMA channels. An 8/16-bit mode bit for each of the 16-bit DMA channels is written in a control register during the system Power On Self Test routine. Once the mode bit is written for each of the three 16-bit DMA channels, it may be read when the channel is active to select whether the channel is to operate as an 8-bit or 16-bit channel. With this mode bit information available, the page addressing may be selectively changed from 128k size pages to 64k size pages when a 16-bit DMA channel is to be converted to 8-bit. In addition, the byte addressing within a page may be changed from two byte addressing during 16-bit mode to single byte addressing during 8-bit mode.
摘要翻译：在个人计算系统中，“AT”或“ISA”总线中的DMA控制器的功能已经被修改，使得系统可以选择是否将16位DMA通道用作8位DMA通道或16位DMA通道，位DMA通道。在系统上电自检程序期间，将16位DMA通道中的每一个的8/16位模式位写入控制寄存器。一旦为三个16位DMA通道中的每一个写入模式位，当通道有效时可以读取模式位，以选择通道是作为8位还是16位通道运行。利用该模式位信息，当16位DMA通道将被转换为8位时，页寻址可以从128k大小页被选择性地改变为64k大小页。另外，在8位模式期间，页内的字节寻址可以从16位模式下的两字节寻址改变为单字节寻址。

2. 发明授权

US5008829A Personal computer power supply 失效
标题翻译：个人电脑电源
公开(公告)号：US5008829A
公开(公告)日：1991-04-16
申请号：US536751
申请日：1990-06-14
申请人： Roger L. Cox , Michael J. DeLoye , Robert L. Myers
发明人： Roger L. Cox , Michael J. DeLoye , Robert L. Myers
IPC分类号： G06F1/26 , G06F15/78
CPC分类号： G06F1/26
摘要： This invention relates to personal computers, and more particularly to personal computer power supplies for supplying electrical power to electrically operated components which manipulate or store digital data. The power supply has a controllable component for responding to the presence and absence of a low voltage direct current electrical signal by enabling and disabling the supply of electrical power to the data processing and storage components, and a signal generator circuit operatively connected with the controllable component and with an alternating current electrical main supply for controllably deriving from the main supply a low voltage direct current signal for delivery to the controllable component, whereby a user of the microcomputer may control energization of the electrically powered data processing and storage components by controlling the application of the low voltage direct current signal from the signal generator circuit to the controllable component.

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