CODE I
L 0 IX+ LDrIXY, H 1 IX+ LDrIXY,
HL PUSH,
;CODE
CODE I'
L 2 IX- LDrIXY, H 1 IX- LDrIXY,
CODE J
L 4 IX- LDrIXY, H 3 IX- LDrIXY,
CODE >R
HL POP, chkPS,
IX INCd, IX INCd, 0 IX+ L LDIXYr, 1 IX+ H LDIXYr,