FUJITSU Implementation Supplement Fujitsu SPARC64 V - Manual (Page 142)

Release 1.0, 1 July 2002 F. Chapter M Cache Organization 131
ASI_L2_DIAG_TAG_READ works in concert with ASI_L2_DIAG_TAG_READ_REG .
A read to ASI_L2_DIAG_TAG_READ returns 0, with the side effect of setting the tag
to ASI_L2_DIAG_TAG_READ_REG0-6 .
M.3.4 L2 Diagnostics Tag Read Registers
(
ASI_L2_DIAG_TAG_READ_REG )
ASI_L2_DIAG_TAG_READ_REG0-6 holds the tag that is specified by the read of
ASI_L2_DIAG_TAG_READ .
[1] Register Name: ASI_L2_DIAG_TAG
[2] ASI: 6B
16
[3] VA: VA<18:6>: Index number of the tag.
0000
16
–7FFC0
16
[4] RW Supervisor read
[5] Data 0 is read.
[1] Register Name: ASI_L2_DIAG_TAG_READ_REG
[2] ASI: 6C
16
[3] VA: VA<6:3> internal register number
[4] RW Supervisor Read
[5] Data TBD.