Print the 16-bit number in (Y X) to 5 digits, left-padding with spaces for
numbers with fewer than 3 digits (so numbers < 10000 are right-aligned),
with no decimal point.
Arguments:XThe low byte of the number to printYThe high byte of the number to print
.pr6CLC\ Do not display a decimal point when printing\ Fall through into pr5 to print X to 5 digits