GMS30C2116 Datasheet, PDF (199/322 Pages) Hynix Semiconductor – USERS MANUAL

Appendix A. Instruction Set Details
Branch
A-25
BR
Format:
PCrel format
15
87 6
0
OP-code
0
low-rel
S
1111 1100
S: sign bit of rel
rel = 25 S // low-rel // 0
range -128 ~ 126
Notation:
BR rel
Description:
Place the branch address PC + rel (relative of the first byte after the Branch instruction) in
the program counter PC and clear the cache-mode flag M; all condition flags remain
unchanged. Then instruction execution proceeds at the branch address placed in the PC
Note: rel is signed to allow forward or backward branches.
Operation:
PC := PC + rel
M := 0
Exceptions:
None.