User`s guide

DWMBB Adapter
Table 3–2 VAXBI Commands and Corresponding XMI Transactions
VAXBI Command XMI Transaction
Read (READ) Read
Longword Quadword (DWMBB returns requested longword to the VAXBI)
Quadword Quadword
Octaword Octaword
Interlock Read with Cache Intent (IRCI) Interlock Read
Longword Quadword (DWMBB returns requested longword to the VAXBI)
Quadword Quadword
Octaword Octaword
Read with Cache Intent (RCI) Read
Longword Quadword (DWMBB returns requested longword to the VAXBI)
Quadword Quadword
Octaword Octaword
Write (WRITE) Write Mask
Longword Quadword (unused longword is Write Masked)
Quadword Quadword
Octaword Octaword
Write with Cache Intent (WCI) Write Mask
Longword Quadword (unused longword is Write Masked)
Quadword Quadword
Octaword Octaword
Unlock Write Mask with Cache Intent (UWMCI) Unlock Write Mask
Longword Quadword (unused longword is Write Masked)
Quadword Quadword
Octaword Octaword
Write Mask with Cache Intent (WMCI) Write Mask
Longword Quadword (unused longword is Write Masked)
Quadword Quadword
Octaword Octaword
Interrupt (INTR) Interrupt
Identify (IDENT) Not supported (NO ACK to VAXBI)
1
Invalidate (INVAL) Not supported (NO ACK to VAXBI)
1
The DWMBB responds to VAXBI IDENTs that are directed to it under three different conditions. All three conditions
are implemented within the DWMBB/B module’s BIIC. These conditions are as follows:
1. The BIIC detects an error condition that results in a generated interrupt.
2. The user sets the force interrupt bits in the appropriate BIIC register.
3. External logic (such as the Interprocessor Interrupt decode logic) asserts the BCI INT signal (pin <6>) on the
BIIC.
3–6