Siemens C500 User Manual page 56

DIV AB
Function: Divide
Description: DIV AB divides the unsigned eight-bit integer in the accumulator by the unsigned
eight-bit integer in register B. The accumulator receives the integer part of the
quotient; register B receives the integer remainder. The carry and OV flags will be
cleared.
Exception: If B had originally contained 00 H , the values returned in the accumulator
and B register will be undefined and the overflow flag will be set. The carry flag is
cleared in any case.
Example: The accumulator contains 251 (0FB H or 11111011 B ) and B contains 18 (12 H or
00010010 B ). The instruction
DIV
will leave 13 in the accumulator (0D H or 00001101 B ) and the value 17 (11 H or
00010001 B ) in B, since 251 = (13x18) + 17. Carry and OV will both be cleared.
Operation: DIV
(A15-8)
(B7-0)
Encoding: 1 0 0 0
Bytes: 1
Cycles: 4
Semiconductor Group
AB
¬ (A) / (B)
0 1 0 0
4-30
Instruction Set
C500 Family
1998-04-01