collapseos/blk/323

CODE C!
    HL POPqq,
    DE POPqq,
    chkPS,
    (HL) E LDrr,
;CODE

CODE C@
    HL POPqq,
    chkPS,
    L (HL) LDrr,
    H 0 LDrn,
    HL PUSHqq,
;CODE