From: ohland@charter.net   
      
   Those 8 reads and 10 reads, can't you do a no op? Cut out the read   
   register access.   
      
   Kevin Moonlight wrote:   
   > In the case of TYRIAN,  what I noticed is that it would write to the   
   sub-address 388h  and then it would do 8 reads to 40h and then it would write   
   to the data to 389h and then it would read 40h 10 more times.   I would need   
   to look closer to be sure I    
   am not  missing something, but it certainly appears to just do reads to the   
   timer and not really care about the values, not actually configuring the timer   
   or doing anything ,  and on a PC it would expect those reads to take 500ns or   
   whatever it may be,     
   but on  my test system the basic cycle time being 200ns   those 8-10   delay   
   i/o reads are happening much faster and not giving enough time for the OPL to   
   do its thing.      Me extending the cycle to 5us is just indirectly slowing   
   things down and giving    
   it a chance.   
      
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