TSC80251 TEMIC [TEMIC Semiconductors], TSC80251 Datasheet - Page 174
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TSC80251
Manufacturer Part Number
TSC80251
Description
Manufacturer
TEMIC [TEMIC Semiconductors]
Datasheet
1.TSC80251.pdf
(219 pages)
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Rev. C – May 7, 1999
MUL AB
Function:
Multiply
Description:
Multiplies the unsigned 8–bit integers in the accumulator and register B. The low byte of the 16–bit product is left in
the accumulator, and the high byte is left in register in B. If the product is greater than 255 (0FFh) the OV flag is set;
otherwise it is clear. The CY flag is always clear.
Example :
The accumulator contains 80 (50h) and register B contains 160 (0A0h). After executing the instruction MUL AB which
gives the product 12800 (3200h), register B contains 32h (00110010B), the accumulator contains 00h, the OV flag is
set and the CY flag is clear.
[Encoding]
FLAGS :
Hex Code in:
Binary Mode = [Encoding]
Source Mode = [Encoding]
1010
CY
0
0100
AC
_
OV
Operation:
MUL
(A)
(B)
high byte of (A) X (B)
low byte of (A) X (B)
N
TSC80251
Z
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