} RETIRE_SUCCESS } Included in Extension Minimum version Lifecycle state Zbkx (Crossbar permutations) v1.0 Ratified Zbkc 1.0 Ratified A 2.1 Ratified RV32E 2.0 Ratified A 2.1 Ratified RV32E 1.9 N RV64I 2.0 Y RV128I 1.7 Draft Extension Version Status
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