tasm - Illegal immediate error in assembly code - wrong direct addressing? -


i don't understand why error in assembly code. want assign byte 0ah @ memory location address 0100h (in data segment). error "illegal immediate" @ line 6 believe direct addressing using fine - saw similar examples in texts.

.model small .data .stack .code .startup     mov byte ptr[0100h], 0ah      mov ah, 4ch     int 21h end

any ideas?


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