The first bin (AKA LSB) of the BH register is the 9th bit of the BX register. Wh

Question

The first bin (AKA LSB) of the BH register is the 9th bit of the BX register. What is the value of the BX register if only this bit is set to one (all other bits are zero)? The most significant bit MSB controls the highest number value of any bit in a register (given an unsigned representation) What is the value of the BL register if the MS is 1 and all other bits are zero? The AL and the AH registers combined make what 16 bit raster? The BH register is how many, bytes? (number answer only, e.g. 1 2 4 6 16 etc.) Which register stores the address of currently

Explanation / Answer

1. The BX register is of 16 bits. It consists of BL and BH consisting of 8 bits each. Therefore, when the ninth value of BX or first value of BH is 1, we multiply 1 * (2^8) and get the value of BX as 256.

Ans. 256
2.BL has 8 bits. So, when the 8th bit has value 1 and all other bits have 0, we simply multiply 1 * (2^7) and get the answer as 128.(In unsigned form)
And. 128
3. The AL and AH registers combine to make AX register.

4. The BH register is of 8 bits or 1 byte.

Ans. 1 byte

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