Calculate sum of series of even numbers

; MEANS ADD ONLY EVEN NUMBERS IN AN ARRAY
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MVI C, 05H ; SIZE OF ARRAY
LXI H, 2000H ; START ARRAY
MVI B, 00H ; SUM =0
BACK MOV A, M ;
ANI 01H ; MASK BITS D1 TO D7 LEAVING D0 ALONE
JNZ SKIP ;
ADD M ; ADD EVEN NUMBER
MOV B,A ;
SKIP INX H ;
DCR C ;
JNZ BACK ;
STA 1FFFH ;
HLT ;