[Task] Set the memory unit SQTAB first address to store a square number table of 0 to 15. It is required to use the direct table lookup method to calculate a program, and find the square value of the given number (＜=15) in unit A and send it to unit B for storage.
【Reference Answer 1】
assume cs: code, ds: data
data segment
sqtab db 0, 1, 4, 9, 16, 25, 36, 49, 64, 81
db 100, 121, 144, 169, 196, 225
a db 12
b db ?
data ends
code segment
start:
mov ax, data
mov ds, ax
mov bl, a ;byaMedian value as index value
mov bh, 0
mov al, sqtab[bx] ;existtableFind in
mov b, al
mov ax, 4c00h
int 21h
code ends
end start
[Reference Answer 2] (Use special table lookup instructions xlat)
assume cs: code, ds: data
data segment
sqtab db 0, 1, 4, 9, 16, 25, 36, 49, 64, 81
db 100, 121, 144, 169, 196, 225
a db 12
b db ?
data ends
code segment
start:
mov ax, data
mov ds, ax
mov bx, offset sqtab
mov al, a
xlat
mov b, al
mov ax, 4c00h
int 21h
code ends
end start
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