MOD = 1 1 indicates register to register transfer

MOD = 0 0 indicates memory without displacement

In this case, R/M fields indicates a memory when MOD is not 1 1

R/M = 1 1 1 indicates ( BX )

When MOD = 0 1, the offset address is

When MOD = 1 0, the offset address is

e) Immediate operand to register : In this format, the first byte as well as the 3 bits from the second byte which are used for REG field in case of register to register format are used for opcode. It also contains one or two bytes of immediate data.