Echelon Neuron - Manual (Page 125)

SBR (Short Branch)
The SBR instruction performs an unconditional branch. The SBR instruction
uses the (short) relative addressing mode. The SBR instruction branches
forward with an unsigned relative displacement of 1 to 16 bytes. The
displacement expression must resolve at link time to a value in the range 0 to 15
(one less than the actual displacement because the displacement calculation
includes the size of the SBR operation itself).
Note that the minimum short branch (forward one byte), SBR *+1, is equivalent
to a no operation (NOP) instruction.
The Neuron Assembler also supports the use of a label for the displacement
expression; manual calculation of the displacement value is not required.
See also BR (Branch) and BRF (Branch Far) for longer unconditional branches.
The SBR instruction applies to Series 3100, 5000, and 6000 devices.
Syntax:
The SBR instruction requires a single operand to specify the displacement or
label:
SBR displacement
SBR label
Table 49 describes the attributes of the SBR instruction. In the table, the
asterisk (*) specifies the current value of the instruction pointer (IP).
Table 49. SBR Instruction
Instruction Hexadecimal
Opcode
Instruction
Size (Bytes)
CPU Cycles
Required
Affect on
Carry Flag
SBR *+1 20 1 1 None
SBR *+2 21 1 1 None
SBR *+3 22 1 1 None
SBR *+4 23 1 1 None
SBR *+5 24 1 1 None
SBR *+6 25 1 1 None
SBR *+7 26 1 1 None
SBR *+8 27 1 1 None
SBR *+9 28 1 1 None
Neuron Assembly Language Reference 115