Toshiba T2N User Manual Page 201

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3. User Data
188 PROSEC T2N
(2) Digit Designation for instruction Data Exchange
Example 3)
Q2
–[ R0000 XCHG D000 ]– (data exchange instruction)
It is like a mixture of examples 1) and 2). 2 digits (8bits)
datastarting with R000 are transferred to the lower 8 bits of
D0000 and 8 bits data which are 0 are transferred to the upper 8
bits of D0000. At the same time, the lower 2 digits (8 bits) data of
D000 are tranferred to the 2 digits (8 bits) stating with R0000.
1. Be careful that the result of digit designation does not exceed the
address range. When the result of digit designation exceeds the
address range, the excess portion will be ignored a boundary error
will occur.
2. A combination of digit designation and index modification can also
be used.
Example)
Q1 I If I = H001C, it signifies the same Q1
R0000 R001C
NOTE
The value of RW000 before
exchange remains.
Substitute by 0
RW000
D0000
D0000
RW000
F70
F70
F70
F70
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