Z8
®
CPU
User Manual
UM001604-0108 Instruction Description
202
LDEI @R2, @RR6
Op Code: 83 26
loads the value C3h into Register 23h. Working Register Pair RR6 is incremented to
404Ch and Working Register R2 is incremented to 24h.
Example 2
If Working Register R2 contains 22h, Register 22h contains ABh, Register 23h contains
C3h, and Working Register Pair R6 and R7 contains 404Ah, the statement:
LDEI @RR6, @R2
Op Code: 93 26
loads the value ABh into external data memory location 404Ah. Working Register R2 is
incremented to
23h and Working Register Pair RR6 is incremented to 404Bh. A second
LDEI @RR6, @R2
Op Code: 93 26
loads the value C3h into external data memory location 404Bh. Working Register R2 is
incremented to
24h and Working Register Pair RR6 is incremented to 404Ch.
This instruction format is valid only for MCUs which can address external data memory.
Note: