sjmp is byte instruction.
difference between ljmp and sjmp in 8051
djnz instruction in 8051
djnz instruction in 8051 full formsjmp means
ajmp full form in 8051
sjmp instruction in 8051 stands for
sjmp function

Look also at '.'SJMP HERE”, which has 80 and FE for the opcode and relative address, respectively. The PC of the following instruction, 0017H, is added Description: SJMP jumps unconditionally to the address specified reladdr . Reladdr must be within -128 or +127 bytes of the instruction that follows the 8051. Add in Next instruction's. PC. PC bit15-b0. SJMP rel. 2nd byte of instruction a number in 2's complement form Example- JMP@ A+ DPTR. PC A + DPTR.SJMP, LJMP, AJMP. Short jump, relative address is 8 bit it support 127 location forward, Long jump range is 64 kb, Absolute jump to anywhere within 2k block Description: SJMP jumps unconditionally to the address specified reladdr. Reladdr must be within -128 or +127 bytes of the instruction that follows the SJMP