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Intel 80312 I/O Companion Chip - ECEE

Intel 80312 I/O Companion Chip - ECEE

Intel 80312 I/O Companion Chip - ECEE

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<strong>Intel</strong> ® <strong>80312</strong> I/O <strong>Companion</strong> <strong>Chip</strong>Messaging Unit6.8.16 Outbound Free Tail Pointer Register - OFTPRThe Outbound Free Tail Pointer Register (OFTPR) contains the local memory offset from theQueue Base Address of the tail pointer for the Outbound Free Queue. The Tail Pointer must bealigned on a word address boundary. When read, the Queue Base Address is provided in the upper12 bits of the register. Writes to the upper 12 bits of the register are ignored.Table 6-22.Outbound Free Tail Pointer Register - OFTPR3128 24 20 16 12 8 4 0PCI IOPAttributes Attributesrororororororororororororororororororororororororw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rwrw rw rw rw rw rw rw rw rw rw rw rw rw rw rw rwrw rwrw rwrvrvrvrvOFTPR<strong>Intel</strong> ® 80200 Processor Local Bus Address1374HAttribute Legend:RV = ReservedPR = PreservedRS = Read/SetRW = Read/WriteRC = Read ClearRO = Read OnlyNA = Not AccessibleBit Default Description31:20 000H Queue Base Address - Local memory address of the circular queues.Outbound Free Tail Pointer - Local memory offset of the tail pointer for the Outbound19:02 0000H 00 2 Free Queue.01:00 00 2 ReservedDeveloper’s Manual 6-33

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