Advertisement
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 11111011B) and B contains 18 (12 H or
00010010B). The instruction
DIV
will leave 13 in the accumulator (0D H or 00001101 B) and the value 17 (11 H or
00010001B) 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
*
157
Instruction Set
Instruction Set
Advertisement
