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Programming:Next / previous line calculation

15 bytes removed, 09:47, 17 April 2015
/* Without Firmware */
'''Output:''' HL=Address of the next line
'''Destroyed:''' AF,BC
<pre>
add h
ld h,a
and 64 ret nz nc ld bc,16304 #c050 sbc add hl,bc
ret
</pre>