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11.4.2 Table reference instructions
MOV XA, @PCDE
←
Function: XA
ROM (PC
Transfers the lower 4 bits of the table data in the program memory addressed when the lower 8 bits (PC
program counter (PC) are replaced with the contents of register pair DE, to the A register, and the higher 4 bits to
the X register.
The table address is determined by the contents of the program counter (PC) when this instruction is executed.
The necessary data must be programmed to the table area in advance by using an assembler directive (DB
instruction).
The program counter is not affected by execution of this instruction.
This instruction is useful for successively referencing table data.
Example
Table address
CHAPTER 11 INSTRUCTION SET
+DE)
11-8
11
8
7
4
3
PC
D
11–8
3–0
User's Manual U10676EJ3V0UM
Program memory
0
7
E
Table data H
3–0
3
X
) of the
7-0
4
3
0
Table data L
0
3
0
A
261
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