Department of Computer Scien

ce and Information Engineering

National Cheng Kung University, TAIWAN

HANEL

INSIDE THE

(^8051) Registers(cont’)

‰The most widely used registers

¾A (Accumulator)

ƒFor all arithmetic and logic instructions

¾B, R0, R1, R2, R3, R4, R5, R6, R7 ¾DPTR (data pointer), and PC (program counter)

A B R0R1R2R3R4R5R6R7

DPTRPC

DPH PC (Program counter)

DPL