Hi George,

I think, you lost the thread.
Please look at the question on the top.
The AT89C2051 can never execute "MVI D,000H".


Following the multiplication of a 16 bit value
with 10 (8051 like):

;Input: r6,r7
;Output: r6,r7
;Alters: a, b, ac, ov, c

mul16bit_with10:
mov a, r7
mov b, #10
mul ab
mov r7, a
mov a, #10
xch a, b
xch a, r6
mul ab
add a, r6
mov r6, a


Peter