MOV BX，[SI] - ASM问题

Question

I'm studying ASM 8086 theoretically on highschool.
And when I do this:
MOV BX,[SI]
is SI+1 going to BH or BL?
Thank you :-)

Answer 1

存储器位置SI + 1的字节将存储在寄存器BH因为x86是小端 。

Answer 2

I think your question is about the endianness of x86, and the answer is that it is little-endian: the byte at address SI goes to BL. The byte at SI+1 goes to BH.