From: ohland@charter.net   
      
   https://www.ardent-tool.com/docs/pdf/PS2_Model_95_XP_486_Technic   
   l_Reference_Oct90.pdf   
      
   Page 67   
      
   Central Arbiter Programming   
      
   Figure 4-11. Arbitration Register (Hex 0090) — Read   
      
   Bit7 Setting this bit to 1 enables system microprocessor cycles during   
   arbitration cycles. This bit can be set to 0 if an arbitrating device   
   requires total control of the channel bandwidth. This bit is set to O by   
   a system reset.   
      
   Reading this bit as a 1 indicates system microprocessor   
   cycles are enabled during arbitration.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)