Initial data commit

Task/Integer-overflow/6502-Assembly/integer-overflow-6.6502

@@ -0,0 +1,16 @@
+;adding two 16-bit signed numbers, the first is stored at $10 and $11, the second at $12 and $13.
+;The result will be stored at $14 and $15.
+
+;add the low bytes
+
+LDA $10              ;low byte of first operand
+CLC
+ADC $12              ;low byte of second operand
+STA $14              ;low byte of sum
+
+;add the high bytes
+
+LDA $11              ;high byte of first operand
+ADC $13              ;high byte of second operand
+STA $15              ;high byte of result
+BVS HandleOverflow   ;only check for overflow when adding the most significant bytes.