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Bitfields for AMD-640 PCI Arbitration Control 1 register

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Bit Description

7

arbitration priority
0 = fixed (high-to-low is REQ1#, REQ2#, REQ3#, REQ4#, PREQ#, and CPU)
1 = fair (round-robin) arbitration

6

arbitration mode
0 = arbitrate at end of REQ#
1 = arbitrate at end of each FRAME# (allows pre-emption by a higher-priority initiator)

5 - 4

reserved (0)

3 - 0

number of idle time periods of 32 PCI clocks before arbitration is forced (0000 disables timeout)

See Also:

#00983,#01008,#01010