PHK
PEA .jslrtsreturn-1
PEA.w $0084CF-1
JML $008000
.jslrtsreturn:

; or if you also need to set the DBR:
PHB
db $F4,$008000>>16,.jslrtsreturn>>16 ; stamp out a PEA in hex because the math otherwise gets annoying
PLB
PEA .jslrtsreturn-1
PEA.w $0084CF-1
JML $008000
.jslrtsreturn:
PLB