242
6 BASIC INSTRUCTIONS
6.2 Arithmetic Operation Instructions
BCD 8-digit multiplication and division operations
DB*(P), DB/(P)
■DB*
• Multiplies the BCD 8-digit data designated by (S1) and the BCD 8-digit data designated by (S2), and stores the product at
the device designated by (D).
• If (D) has designated a bit device, the lower 8 digits (lower 32 bits) will be used for the product, and the higher 8 digits
(upper 32 bits) cannot be designated.
• 0 to 99999999 (BCD 8 digits) can be assigned to (S1) and (S2).
■DB/
• Divides 8-digit BCD data designated by (S1) and 8-digit BCD data designated by (S2), and stores the result in the device
designated by (D).
• 64 bits are used for the result of the division operation, and stored as quotient and remainder.
• If (D) has been designated as a bit device, the remainder of the operation will not be stored.
(S1): Data to be multiplied/divided or head number of the devices where the data to be multiplied/divided is stored (BCD 8 digits)
(S2): Data for multiplying/dividing or head number of the devices where the data for multiplying/dividing is stored (BCD 8 digits)
(D): Head number of the devices where the multiplication/division operation result will be stored (BCD 16 digits)
Setting
data
Internal device R, ZR J\ U\G Zn Constant
K, H
Others
Bit Word Bit Word
(S1)
(S2)
(D)
•K1 Lower 1 digit (b0 to 3)
•K4 Lower 4 digits (b0 to 15)
•K8 Lower 8 digits (b0 to 31)
• Quotient (BCD 8 digits) Stored at the lower 32 bits.
• Remainder (BCD 8 digits) Stored at the upper 32 bits.
Basic
Process
High
performance
Redundant
Universal
LCPU
Command
Command
P
DB , DB/
*
DB P, DB/P
S1 S2
D
S1 S2
D
indicates an instruction symbol of DB* , DB/.
*
9999 9999 9999 9999
+1 +1
9999 9998 0000 0001
+1 +2 +3
D
D D
D
S1
S1 S2 S2
6578
1
9
2
3
1
0
2
3 5
4
6 7
/
+1
+1
0000 0045 1023 6308
Digits exceeding the designated number of digits
are assumed to be 0
(Lower 4 digits)(Upper 4 digits)(Lower 4 digits)(Upper 4 digits)
+1 +3 +2
Remainder
Quotient
S1 S2
D
S1 S2
D D D
To Next Page
Loading...
