NEC PD750008 User Manual
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µPD750008 USER'S MANUAL
MOVT XA,@BCXA
Function: For the µPD750006 and µPD750008
XA <– (BCXA)
ROM
Transfers the low-order four bits of the table data (eight bits) in program memory to the A register, and the
high-order four bits to the X register. The table data is addressed by the low-order one bit of the B register
and the contents of the C, X, and A registers.
The table area must have necessary data loaded by an assembler pseudo instruction (DB instruction). The
program counter is not affected by the execution of this instruction.
MOVT XA,@BCDE
Function: For the µPD750006 and µPD750008
XA <– (BCDE)
ROM
Transfers the low-order four bits of the table data (eight bits) in program memory to the A register, and the
high-order four bits to the X register. The table data is addressed by the low-order three bits of the B register
and the contents of the C, D, and E registers.
The table area must have necessary data loaded by an assembler pseudo instruction (DB instruction). The
program counter is not affected by the execution of this instruction.
Remark "Function" in this section is applicable to the µPD750006 and µPD750008 whose program
counters consist of 13 bits each. This is also applicable to the µPD750004 whose program
counter consists of 12 bits and the µPD75P0016 whose program counter consists of 14 bits,
however.
11
12
8 7
4 3
0
B
0
C
X
A
Table data H
Table data L
X
3
0
A
3
0
11
12
8 7
4 3
0
B
0
C
D
E
Table data H
Table data L
X
3
0
A
3
0