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???
07/04/04 01:58
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#73590 - RE: Polling
Responding to: ???'s previous message
I am not going to comment on what could be construed as derogatory about one's design skills, but rather, I'll lighten the mood by sharing a recent experience where new-fangled technology helped me help the hardware designers with a performance problem...

Michael Karas said:
If some application gets underway and it turns out that the available bandwidth is not high enough it is also very easy to see how a higher processor frequency can help solve the throughput problem.

Or leave the frequency alone and look in the nooks and crannies of processor facilities.

I won't go into details, but recently, we weren't able to decode a "serial interface bus" instruction quickly enough because of multiple rotate/shift instructions needed to extract fields out of the bus' instruction word.

Hey, looky-there, Dan sees that this FPGA soft-processor core has a barrel-shifter option, enables it, the compiler picks up that it's enabled and starts generating single, single-cycle instructions -- problem solved :-)


List of 29 messages in thread
TopicAuthorDate
UART Without Serial Interrupt?            01/01/70 00:00      
   Polling            01/01/70 00:00      
      RE: Polling            01/01/70 00:00      
         RE: Polling            01/01/70 00:00      
            RE: Polling            01/01/70 00:00      
               RE: Polling            01/01/70 00:00      
                  RE: Polling            01/01/70 00:00      
                     RE: Polling            01/01/70 00:00      
                        RE: Polling            01/01/70 00:00      
                           RE: Polling            01/01/70 00:00      
                              RE: one step further            01/01/70 00:00      
                                 RE: one step further            01/01/70 00:00      
                                 another step further            01/01/70 00:00      
                                    RE: another step further            01/01/70 00:00      
                                       RE: another step further caveats            01/01/70 00:00      
                                          RE: another step further caveats            01/01/70 00:00      
                     RE: Polling -- long            01/01/70 00:00      
            RE: Polling            01/01/70 00:00      
               RE: Polling            01/01/70 00:00      
   RE: UART Without Serial Interrupt?            01/01/70 00:00      
      RE: UART Without Serial Interrupt?            01/01/70 00:00      
         RE: UART Without Serial Interrupt?            01/01/70 00:00      
         RE: UART Without Serial Interrupt?            01/01/70 00:00      
            RE: UART Without Serial Interrupt?            01/01/70 00:00      
   RE: UART Without Serial Interrupt?            01/01/70 00:00      
   When is polling preferable?            01/01/70 00:00      
      RE: When is polling preferable?            01/01/70 00:00      
   RE: UART Without Serial Interrupt?            01/01/70 00:00      
   Advantage of polling            01/01/70 00:00      

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