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BCD Calculation Instructions Section 5-20
5-20-9 DOUBLE BCD MULTIPLY – MULL(56)
Limitations DM 6141 to DM 6655 cannot be used for R.
Description When the execution condition is OFF, MULL(56) is not executed. When the
execution condition is ON, MULL(56) multiplies the eight-digit content of Md
and Md+1 by the content of Mr and Mr+1, and places the result in R to R+3.
Flags ER: Md, Md+1,Mr, or Mr+1 is not BCD.
Indirectly addressed DM word is non-existent. (Content of *DM word
is not BCD, or the DM area boundary has been exceeded.)
CY: ON when there is a carry in the result.
EQ: ON when the result is 0.
5-20-10DOUBLE BCD DIVIDE – DIVL(57)
Limitations DM 6141 to DM 6655 cannot be used for R.
Description When the execution condition is OFF, DIVL(57) is not executed. When the
execution condition is ON, DIVL(57) the eight-digit content of Dd and D+1 is
Md: First multiplicand word (BCD)
IR, SR, AR, DM, HR, TC, LR
Mr: First multiplier word (BCD)
IR, SR, AR, DM, HR, TC, LR
Ladder Symbols
Operand Data Areas
R: First result word
IR, SR, AR, DM, HR LR
MULL(56)
Md
Mr
R
@MULL(56)
Md
Mr
R
Md + 1 Md
Mr + 1 Mr
R + 1 RR + 3 R + 2
x
Dd: First dividend word (BCD)
IR, SR, AR, DM, HR, TC, LR
Dr: First divisor word (BCD)
IR, SR, AR, DM, HR, TC, LR
Ladder Symbols
Operand Data Areas
R: First result word
IR, SR, AR, DM, HR LR
DIVL(57)
Dd
Dr
R
@DIVL(57)
Dd
Dr
R