8051 B Register

B Register

• Address: 0xF0.
• Size: 8-bit.
• Bit and Byte addressable.
• Used as an extension to the accumulator for multiply and divide instructions.
• Used along with A register.
• Used by MUL AB and DIV AB instructions.
• MUL AB: Multiplies 8-bit unsigned values in A and B and leaves the 16-bit result in A (low byte) and B (high byte).
• DIV AB: divided A by B, leaving the integer result in A and remainder in B.
• Often used as temporary storage register like a ninth R Register.

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Related topics:
8051 Registers   |   8051 Program Counter   |   8051 R Registers   |   8051 SFR   |   8051 P Registers   |   8051 Stack   |   8051 Stack Pointer   |   8051 Data Pointer   |   8051 PCON Register   |   8051 TCON Register   |   8051 TMOD Register   |   8051 Timer Registers   |   8051 SCON Register   |   8051 SBUF Register   |   8051 IE Register   |   8051 IP Register   |   8051 PSW Register   |   8051 A Register

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List of topics: 8051

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