213
Description When
the execution condition is OFF
, DIV(33) is not executed and the program
moves
to the next instruction. When the execution condition
is ON, Dd is divided
by
Dr and the result is placed in R and R + 1: the quotient in R
and the remainder
in R + 1.
R+1
R
DdDr
QuotientRemainder
Flags ER: Dd or Dr is not in BCD.
Indirectly
addressed DM word
is non-existent. (Content of
∗
DM word is
not BCD, or the DM area boundary has been exceeded.)
EQ: ON when the result is 0.
Example When
IR 00000 is ON with the
following program, the content of IR 020 is divided
by the content of HR 09 and the result is placed in DM 0017 and DM 0018. Exam
-
ple data and calculations are shown below the program.
DIV(33)
020
HR 09
DM 0017
00000
R:
DM 0017
R + 1: DM 0018
11500002
Dd: IR 020
3452
Quotient Remainder
Dd: HR 09
0003
Address Instruction Operands
00000 LD 00000
00001 DIV(33)
020
HR 09
DM 0017
5-19-12 DOUBLE BCD DIVIDE – DIVL(57)
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
Limitations Dd and Dd+1 must be in the same data area, as must Dr and Dr+1.
R and R+3 must be in the same data area.
BCD Calculations Section 5-19
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