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D*
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{ D* ... BIN 32-bit multiplication
Usable device
Bit device Word device
Con-
stant
Pointer Level
X Y M L SM F T C D R Z K H P N
Digit
desig-
nation
No. of
steps
Index
S1
S2
D
5/6
Setting data
S2
S1
Multiplication data or head No. of device
where multiplication data is stored.
Head No. of device to store
multiplication results.
D
Multiplication data or head No. of device
where multiplication data is stored.
Multiplication command
D*
S2S1 D
D*
Function
(1) The BIN data designated with S1 is multiplied by the BIN data designated with S2, and the
multiplication results are stored in the device designated with D.
567890 (BIN)
123456 (BIN)
70109427840 (BIN)
*
S1
S2
S2+1
D
D+3
D+2 D+1
B31......B16B15.......B0
B63...B48B47...B32B31...B16B15...B0
S1+1
B31......B16B15.......B0
(2) -2147483648 to 2147483647 (BIN 32-bit) can be designated in S1 and S2.
(3) The positive/negative of the data in S1, S2 and D is determined with the highest-order bit (S1 and
S2 is by B31, D is by B63).
B31/B63
Judgment of
positive/negative
0 Positive
1 Negative