
eZ8
™
CPU Core
User Manual
UM012820-0810 Op Code Maps
259
Table 25. Op Code Map Abbreviations
Abbreviation Description
b Bit position
cc Condition code
X 8-bit signed index or displacement
DA Destination Address
ER Extended Addressing Register
IM Immediate Data Value
Ir Indirect Working Register
IR Indirect Register
Irr Indirect Working Register Pair
IRR Indirect Register Pair
p Polarity (0 or 1)
r 4-bit Working Register
R 8-bit Register
r1, R1, Ir1, Irr1, IR1, rr1, RR1,
IRR1, ER1
Destination Address
r2, R2, Ir2, Irr2, IR2, rr2, RR2,
IRR2, ER2
Source Address
RA Relative
rr Working Register Pair
RR Register Pair
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