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C–4 Alpha Architecture Handbook
LDA Mem 08 Load address
LDAH Mem 09 Load address high
LDBU Mem 0A Load zero-extended byte
LDWU Mem 0C Load zero-extended word
LDF Mem 20 Load F_floating
LDG Mem 21 Load G_floating
LDL Mem 28 Load sign-extended longword
LDL_L Mem 2A Load sign-extended longword locked
LDQ Mem 29 Load quadword
LDQ_L Mem 2B Load quadword locked
LDQ_U Mem 0B Load unaligned quadword
LDS Mem 22 Load S_floating
LDT Mem 23 Load T_floating
MAXSB8 Opr 1C.3E Vector signed byte maximum
MAXSW4 Opr 1C.3F Vector signed word maximum
MAXUB8 Opr 1C.3C Vector unsigned byte maximum
MAXUW4 Opr 1C.3D Vector unsigned word maximum
MB Mfc 18.4000 Memory barrier
MF_FPCR F-P 17.025 Move from FPCR
MINSB8 Opr 1C.38 Vector signed byte minimum
MINSW4 Opr 1C.39 Vector signed word minimum
MINUB8 Opr 1C.3A Vector unsigned byte minimum
MINUW4 Opr 1C.3B Vector unsigned word minimum
MSKBL Opr 12.02 Mask byte low
MSKLH Opr 12.62 Mask longword high
MSKLL Opr 12.22 Mask longword low
MSKQH Opr 12.72 Mask quadword high
MSKQL Opr 12.32 Mask quadword low
MSKWH Opr 12.52 Mask word high
MSKWL Opr 12.12 Mask word low
MT_FPCR F-P 17.024 Move to FPCR
MULF F-P 15.082 Multiply F_floating
MULG F-P 15.0A2 Multiply G_floating
MULL Opr 13.00 Multiply longword
MULL/V 13.40
MULQ Opr 13.20 Multiply quadword
MULQ/V 13.60
MULS F-P 16.082 Multiply S_floating
MULT F-P 16.0A2 Multiply T_floating
ORNOT Opr 11.28 Logical sum with complement
PERR Opr 1C.31 Pixel error
PKLB Opr 1C.37 Pack longwords to bytes
PKWB Opr 1C.36 Pack words to bytes
RC Mfc 18.E000 Read and clear
RET Mbr 1A.2 Return from subroutine
RPCC Mfc 18.C000 Read process cycle counter
RS Mfc 18.F000 Read and set
S4ADDL Opr 10.02 Scaled add longword by 4
S4ADDQ Opr 10.22 Scaled add quadword by 4
S4SUBL Opr 10.0B Scaled subtract longword by 4
S4SUBQ Opr 10.2B Scaled subtract quadword by 4
S8ADDL Opr 10.12 Scaled add longword by 8
S8ADDQ Opr 10.32 Scaled add quadword by 8
S8SUBL Opr 10.1B Scaled subtract longword by 8
Table C–2: Common Architecture Instructions (Continued)
Mnemonic Format Opcode Description