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21264/EV68A Hardware Reference Manual
D.26 Restriction30:HW_MTPRandHW_MFPRtotheCboxCSR....................... D–15
D.27 Restriction 31 : I_CTL[VA_48] Update . . . ...................................... D–17
D.28 Restriction32:PCTR_CTLUpdate ........................................... D–17
D.29 Restriction33:HW_LDPhysical/LockUse...................................... D–18
D.30 Restriction34:WritingMultipleITBEntriesintheSamePALcodeFlow............... D–18
D.31 Guideline 35:HW_INT_CLRUpdate......................................... D–18
D.32 Restriction36:UpdatingI_CTL[SDE].......................................... D–18
D.33 Restriction 37 : Updating VA_CTL[VA_48] ...................................... D–18
D.34 Restriction38:UpdatingPCTR_CTL.......................................... D–18
D.35 Guideline39:WritingMultipleDTBEntriesintheSamePALFlow.................... D–19
D.36 Restriction40:ScrubbingaSingle-BitError..................................... D–19
D.37 Restriction41:MTPRITB_TAG,MTPRITB_PTEMustbeintheSameFetchBlock..... D–21
D.38 Restriction42:UpdatingVA_CTL,CC_CTL,orCCIPRs........................... D–21
D.39 Restriction 43: No Trappable Instructions Along with HW_MTPR..................... D–21
D.40 Restriction 44: Not Applicable to the 21264/EV68A ............................... D–21
D.41 Restriction45: NoHW_JMPorJMPIntructionsinPALcode........................ D–21
D.42 Restriction 46: Avoiding Livelocks in Speculative Load CRD Handlers ................ D–22
D.43 Restriction47: CacheEvictionforSingle-BitCacheErrors......................... D–22
D.44 Restriction 48: MB Bracketing of Dcache Writes to Force Bad Data ECC and Force Bad Tag Parity
....................................................................... D–24
E 21264/EV68A-to-Bcache Pin Interface
E.1 ForwardingClockPinGroupings.............................................. E–1
E.2 Late-WriteNon-BurstingSSRAMs ............................................ E–2
E.3 Dual-DataRateSSRAMs................................................... E–3
Glossary
Index