Fujitsu SPARC JPS1 Implementation Supplement Manual page 145

FIGURE N-1
134 SPARC JPS1 Implementation Supplement: Fujitsu SPARC64 V • Release 1.0, 1 July 2002
read ASI_INTR_DISPATCH_STATUS
Y
Error
Busy?
N
PSTATE.IE
(begin atomic sequence)
Write ASI_INTR_W (data 0)
. . .
Write ASI_INTR_W (data 7)
Write ASI_INTR_W (interrupt
MEMBAR
read ASI_INTR_DISPATCH_STATUS
Busy?
PSTATE.IE
(end atomic sequence)
Nack?
dispatch complete
Dispatching an Interrupt
0
dispatch)
Y
N
1
Y
N