Zilog Z8F0130 - Manual (Page 175)

eZ8
™
CPU Core
User Manual
UM012820-0810 JR Instruction
160
JR
Definition
Jump Relative.
Syntax
JR DA
Operation
PC
 PC + X
where the jump offset, X, is calculated by the eZ8 CPU assembler from
the Program Counter (PC) value and the Destination Address (DA).
Description
The relative address offset is added to the Program Counter and control
passes to the instruction located at the address specified by the Program
Counter. The range of the relative address is +127 to –128 and the original
value of the Program Counter is taken to be the address of the first
instruction byte following the JR instruction.
Flags
C Unaffected
Z Unaffected
S Unaffected
V Unaffected
D Unaffected
H Unaffected