It should in-principle be possible to write a branch where the code itself is single-bit-error resistant, in pseudo-machine-code something like: LOAD [launch

It should in-principle be possible to write a branch where the code itself is single-bit-error resistant, in pseudo-machine-code something like: LOAD [launch1] COMPARE 0x89abcdef JUMP_IF_NOT_EQUAL [fail_label] LOAD [launch2] COMPARE 0x01234567 JUMP_IF_NOT_EQUAL [fail_label] LOAD [launch3] COMPARE 0xfedcba98 JUMP_IF_NOT_EQUAL [fail_label] BRANCH [launch_label] You also need to ensure that launch_label and the location of the branch instruction are both more than one bit away from fail_label. You can duplicate the JUMP_IF_NOT_EQUAL instructions as needed - or indeed the whole block before the BRANCH - as necessary to ensure that.