CODE >R ( 0xa8 )
    HL POPqq, chkPS,
    17 BCALL, ( 17 == pushRS )
;CODE
CODE 2>R ( 0xb9 )
    DE POPqq, HL POPqq, chkPS,
    17 BCALL, ( 17 == pushRS ) EXDEHL, 17 BCALL,
;CODE
CODE R> ( 0xce )
    20 BCALL, ( 20 == popRS )
    HL PUSHqq,
;CODE
CODE 2R> ( 0xdc )
    20 BCALL, ( 20 == popRS ) EXDEHL, 20 BCALL,
    HL PUSHqq, DE PUSHqq,
;CODE ( END OF STABLE ABI )