Yes, you could do that. Gabe
Veydan Wu wrote: > Hi, Gabe. Thank you for your reply. In my first implementation I put > the handling function in the write() function which receives the data > from the CPU, and wait for the handling to finish before returning the > write() function. But It seems that it is not the right way in real > hardware as the handling would take far more than 1 cycle thus the > write() and thus the tick would be prolonged. That is not the true > case in real hardware. > As you said, I can implement an event to get scheduled in the write() > function. Do you mean that I should put the event in the > mainEventQueue and just return? then the event would be serviced in > the cycle I designated? Thank you very much! > > 在 2010年3月13日 上午2:37，Gabe Black <[email protected] > <mailto:[email protected]>>写道： > > You could make your device actually process the data in the function > that receives it. If you want that to have latency or to process the > data gradually (although it sounds like you don't) you could use that > function to schedule an event or events for later. Conceptually > you'd be > implementing an interrupt (or event, or callback, or ...) driven > architecture instead of a polling architecture, but external to the > device it would look the same. On top of being easier to > implement, your > simulation should run faster. > > Gabe > > Veydan Wu wrote: > > I just want my I/O device to run in parallel with CPU. Does the CPUs > > run over and over? More specifically speaking, CPU may send > something > > to the I/O device to handle, but the time is not fixed. So it is > > better to let the device keep running and when it receive data ( by > > the write() function ), it can handle it. I do want the handling > > invoked within the write() function, I want it to act like a real > > hardware device. Is there any way I can do this? Thank you very > much! > > > > Weidan > > ------------------------------------------------------------------------ > > _______________________________________________ > m5-users mailing list > [email protected] > http://m5sim.org/cgi-bin/mailman/listinfo/m5-users _______________________________________________ m5-users mailing list [email protected] http://m5sim.org/cgi-bin/mailman/listinfo/m5-users
