User`s guide

Contents
2.1.2 XMI Corner 2–4
2.1.3 XMI Data Transactions 2–6
2.1.4 XMI Terms 2–7
2.1.5 Wraparound Reads 2–9
2.1.5.1 Octaword Wraparound Read • 2–9
2.1.5.2 Hexword Wraparound Read • 2–9
2.1.6 XMI Interrupt Transactions 2–10
2.1.7 Arbitration 2–11
2.1.8 Bus Integrity 2–11
2.2 XMI ADDRESSING 2–12
2.2.1 XMI Memory Space 2–13
2.2.2 XMI I/O Space 2–14
2.2.2.1 XMI Private Space • 2–14
2.2.2.2 XMI Nodespace • 2–15
2.2.2.3 I/O Address Space • 2–16
2.2.2.4 VAXBI Adapter I/O Address Space • 2–16
2.2.2.5 How to Find a Register in VAXBI Address Space • 2–17
2.3 ARBITRATION CYCLES 2–20
2.4 XMI CYCLES 2–22
2.4.1 Function Codes 2–22
2.4.2 Command Cycles 2–23
2.4.2.1 Command Field • 2–24
2.4.2.2 Mask Field • 2–25
2.4.2.3 Length Field • 2–26
2.4.2.4 Address Field • 2–26
2.4.2.5 Interrupt Priority Level Field • 2–27
2.4.2.6 Node Specifier Field • 2–28
2.4.3 Write Data Cycles 2–29
2.4.4 Good Read Data (GRD) and Corrected Read Data (CRD)
Response Cycles 2–29
2.4.5 Locked Response Cycle (LOC) 2–30
2.4.6 Read Error Response Cycle (RER) 2–30
2.4.7 The Null Cycle 2–30
2.5 XMI TRANSACTIONS 2–31
2.5.1 Memory Block State 2–33
2.5.2 Read Transaction 2–34
2.5.3 Interlock Read Transaction 2–35
2.5.4 Ownership Read Transaction 2–37
2.5.5 Write Mask Transaction 2–38
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