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6 Threads found on edaboard.com: **Multiply And Shift And Add**

Fact - one of the most important hardware blocks in DSP cores is the MAC (**multiply** accumulate) unit.
Assumption - the simple "**shift** **and** **add**" algorithm is too slow **and** therefore isn't utilized.
Question - what is the most common algorithm used today for implementing modern (...)

Digital Signal Processing :: 01-19-2013 18:36 :: shaiko :: Replies: **0** :: Views: **242**

Hi, I am working on a school project. I need to be able to **multiply** two matrices together. The values in the matrices are all signed digits.
I need to **multiply** two matrices like this **and** **add** each value to an offset of :
X
X
X = *

PLD, SPLD, GAL, CPLD, FPGA Design :: 12-09-2011 12:36 :: jerryt :: Replies: **2** :: Views: **797**

An alternative to division is to **multiply** by a fraction.

PLD, SPLD, GAL, CPLD, FPGA Design :: 03-28-2008 20:38 :: echo47 :: Replies: **14** :: Views: **2423**

i want to do following calculation in C...
**multiply** by .62536
**multiply** by 9.46344
can any one suggest >>,<< method to solve this prob.
ex:
for .62536,
=(((x <<2)+3)/6)
any comments are welcome!!
:D:

PC Programming and Interfacing :: 05-29-2007 12:06 :: tom_hanks :: Replies: **3** :: Views: **1012**

below is a 8-bit **shift** **and** **add** multiplier code in vhdl.
u can take it as reference **and** design a 16-bit multiplier.
---------------------------------------------------------------------------
-- The multiplier
--------------------------------------------------------------------------- (...)

ASIC Design Methodologies and Tools (Digital) :: 04-14-2007 00:52 :: kib :: Replies: **2** :: Views: **2125**

hi,
fft operation is basically a repetitive **multiply** **and** **add** operation.There are certain stages depending on the length of the input vector.
In the computation of each stage,one bit is increased in the resulting data. In the fix point calculation, this will overflow the data registers. To avoid this overflow of data (...)

Digital Signal Processing :: 06-14-2006 01:03 :: shameem :: Replies: **1** :: Views: **758**

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