| 摘要 |
<p>A computer system for changing the source and destination devices of data transfers under software control. Default data transfers are made in response to data requests (DReq0'-3') from numbered source devices to the same-numbered destination devices, in response to data requests (Ext DReq 4-7) from the destination devices, the data requests being routed through multiplexers (30-33) which pair, for example, a first source with a first destination, a second source with a second destination, etc., as default values. The multiplexer control signals originate in a register (34) which is originally loaded with default control bits. However, in real time, the bits within the control register can be re-loaded to provide outputs other than the default values. Then, the data from a source can be directed to any one of the destination devices. <IMAGE></p> |
