CODE PICK EXX, ( protect BC )
HL POP,
( x2 )
L SLA, H RL,
SP ADDHLd,
C (HL) LDrr,
HL INCd,
B (HL) LDrr,
( check PS range before returning )
EXDEHL,
HL PS_ADDR LDdi,
DE SUBHLd,
IFC, EXX, lbluflw @ JP, THEN,
BC PUSH,
EXX, ( unprotect BC ) ;CODE