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C–18 Alpha Architecture Handbook
C.10 PALcode Opcodes in Numerical Order
Opcodes 00.003816 through 00.003F16 are reserved for processor implementation-specific
PALcode instructions. All other opcodes are reserved for use by Compaq.
Table C–15: PALcode Opcodes in Numerical Order
Opcode
16
Opcode
10
OpenVMS Alpha
DIGITAL
UNIX
Windows NT
Alpha
00.0000 00.0000 HALT halt halt
00.0001 00.0001 CFLUSH cflush restart
00.0002 00.0002 DRAINA draina draina
00.0003 00.0003 LDQP — reboot
00.0004 00.0004 STQP — initpal
00.0005 00.0005 SWPCTX — wrentry
00.0006 00.0006 MFPR_ASN — swpirql
00.0007 00.0007 MTPR_ASTEN — rdirql
00.0008 00.0008 MTPR_ASTSR — di
00.0009 00.0009 CSERVE cserve ei
00.000A 00.0010 SWPPAL swppal swppal
00.000B 00.0011 MFPR_FEN — —
00.000C 00.0012 MTPR_FEN — ssir
00.000D 00.0013 MTPR_IPIR wripir csir
00.000E 00.0014 MFPR_IPL — rfe
00.000F 00.0015 MTPR_IPL — retsys
00.0010 00.0016 MFPR_MCES rdmces swpctx
00.0011 00.0017 MTPR_MCES wrmces swpprocess
00.0012 00.0018 MFPR_PCBB — rdmes
00.0013 00.0019 MFPR_PRBR — wrmces
00.0014 00.0020 MTPR_PRBR — tbia
00.0015 00.0021 MFPR_PTBR — tbis
00.0016 00.0022 MFPR_SCBB — dtbis
00.0017 00.0023 MTPR_SCBB — tbisasn
00.0018 00.0024 MTPR_SIRR — rdksp
00.0019 00.0025 MFPR_SISR — swpksp
00.001A 00.0026 MFPR_TBCHK — rdpsr
00.001B 00.0027 MTPR_TBIA — —
00.001C 00.0028 MTPR_TBIAP — rdpcr
00.001D 00.0029 MTPR_TBIS — —
00.001E 00.0030 MFPR_ESP — rdthread
00.001F 00.0031 MTPR_ESP — —
00.0020 00.0032 MFPR_SSP — tbim
00.0021 00.0033 MTPR_SSP — tbimasn
00.0022 00.0034 MFPR_USP — —
00.0023 00.0035 MTPR_USP — —
00.0024 00.0036 MTPR_TBISD — ealnfix
00.0025 00.0037 MTPR_TBISI — dalnfix
00.0026 00.0038 MFPR_ASTEN — —
00.0027 00.0039 MFPR_ASTSR — —
00.0029 00.0041 MFPR_VPTB — —
00.002A 00.0042 MTPR_VPTB — —
00.002B 00.0043 MTPR_PERFMON wrfen —
00.002D 00.0045 — wrvptptr —
00.002E 00.0046 MTPR_DATFX — —
00.0030 00.0048 — swpctx rdcounters
00.0031 00.0049 — wrval rdstate