16 bit - Assembly , Move an 8 bit register to a 16 bit Register , how? -

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what want know said on topic. have problem moving 8 bit register 16 bit register . i'm trying , divide number permanently 10 til gets lower 10 , , , within each division time , try move out remained part of division out ah register , add 48 it, have ascii code , try show digit got , on screen . here code :

 num1 dw 255  division :         cmp num1,10             jl divend          mov ax,10         div num1         mov num1,al ;*           add ah,48         mov dl,ah;          mov ah,02h         int 21h      jmp division

but , when im trying assemble , says , operand types not match on line indicated * . im using turbo assembler v4.1 ... should ?

did mean that?

mov bx, offset num1  mov [bx], al

the error because declare word adress byte. if did num1 db works.

tested tasm 4.1


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