321
BCD Calculation Instructions
Section 5-21
Limitations
DM 6143 to DM 6655 cannot be used for R.
Description
When the execution condition is OFF, MUL(32) is not executed. When the
execution condition is ON, MUL(32) multiplies Md by the content of Mr, and
places the result In R and R+1.
Example
When IR 00000 is ON with the following program, the contents of IR 013 and
DM 0005 are multiplied and the result is placed in HR 07 and HR 08. Example
data and calculations are shown below the program.
Flag
ER:
Md and/or Mr is not BCD.
Indirectly addressed EM/DM word is non-existent.
(Content of
*
EM/
*
DM word is not BCD, or the EM/DM area boundary
has been exceeded.)
CY:
ON when there is a carry in the result.
EQ:
ON when the result is 0.
5-21-6 BCD DIVIDE – DIV(33)
Md
Mr
R +1
R
X
MUL(32)
013
DM 0005
HR 07
00000
R+1: HR 08
R: HR 07
0 0 0 8 3 9 0 0
Md: IR 013
3 3 5 6
Mr: DM 0005
0 0 2 5
X
Address Instruction
Operands
00000
LD
00000
00001
MUL(32)
013
DM
0005
HR
07
Dd
:
Dividend word (BCD)
IR, SR, AR, DM, EM, HR, TIM/CNT, LR, #
DIV(33)
Dd
Dr
R
Ladder Symbol
Dr
:
Divisor word (BCD)
IR, SR, AR, DM, EM, HR, TIM/CNT, LR, #
Operand Data Areas
R
:
First result word (BCD)
IR, SR, AR, DM, EM, HR, LR
