Purpose Load the row coordinates from b and the column coordinates from c into the menu text cursor coordinates (_penCol and _penRow).
Code
	ld (_penRow),b		;load row
	ld (_penCol),c		;load col
	ret
	
Error If you look at ti86asm.inc, you can see that _penCol and _penRow are sequential in the TI86's memory. That means that we can just load bc as a 16 bit register into the first coordinate and bc will overlap into the next coordinate.

More striking than the above design flaw is the fact that these Opcodes don't even exist! Data has to travel through the accumulator before going to memory, not b or c.

Fixed Code
	ld (_penCol),bc		;load c into col and
				; b into row