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.l unit
Instruction Description
ABS integer absolute value with saturation
ADD(U) signed or unsigned integer addition without saturation
AND bitwise AND
CMPEQ integer compare for equality
CMPGT(U) signed or unsigned integer compare for greater than
CMPLT(U) signed or unsigned integer compare for less than
LMBD leftmost bit detection
MV move from register to register
NEG negate (pseudo-operation)
NORM normalize integer
NOT bitwise NOT
+OR bitwise OR
SADD integer addition with saturation to result size
SAT saturate a 40-bit integer to a 32-bit integer
SSUB integer subtraction with saturation to result size
SUBC conditional integer subtraction and shift - used for division
XOR exclusive OR
ZERO zero a register (pseudo-operation)
.d unit
Instruction Description
ADD(U) signed or unsigned integer addition without saturation
ADDAB (B/H/W) integer addition using addressing mode
LDB (B/H/W) load from memory with a 15-bit constant offset
MV move from register to register
STB (B/H/W) store to memory with a register offset or 5-bit unsigned constant offset
SUB(U) signed or unsigned integer subtraction without saturation
SUBAB (B/H/W) integer subtraction using addressing mode
ZERO zero a register (pseudo-operation)
.m unit
Instruction Description
MPY (U/US/SU) signed or unsigned integer multiply 16lsb*16lsb
MPYH (U/US/SU) signed or unsigned integer multiply 16msb*16msb
MPYLH signed or unsigned integer multiply 16lsb*16msb
MPYHL signed or unsigned integer multiply 16msb*16lsb
SMPY (HL/LH/H) integer multiply with left shift and saturation

Useful assembler directives

Other than the CPU instruction set, there are special commands to the assembler that direct the assembler to do various jobswhen assembling the code. You should learn about some of these assembler directives to be able to write an assembly program. There are useful assembler directives youcan use to let the assembler know various settings, such as .set, .macro, .endm, .ref, .align, .word, .byte .include .,

The .set directive defines a symbolic name. For example, you can have

1 count .set 40

Then, the assembler replaces each occurrence of count with 40 .

You have already seen how the .ref directive is used to declare symbolic names defined in another file. It is similar to the extern declaration in C.

The .space directive reserves a memory space with specified number of bytes. For example, you canhave

1 buffer .space 128

to define a buffer of size 128 bytes. The symbol buffer has the address of the first byte reserved by .space . The .bes directive is similar to .space , but the label has the address of the last byte reserved.

To put a constant value in the memory, you can use .byte , .word , etc. If you have

1 const1 .word 0x1234

the assembler places the word constant 0x1234 at a memory location and const1 has the address of the memory location. .byte etc. works similarly.

Sometimes you need to place your data or code at a specific memory address boundaries such as word, halfword, etc. You can use the .align directive to do this. For example, if you have

1 .align 4 2 buffer .space 1283 ...

Questions & Answers

what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
How can I make nanorobot?
Lily
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
how can I make nanorobot?
Lily
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
where are the solutions?
where are the solutions?

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Source:  OpenStax, Finite impulse response. OpenStax CNX. Feb 16, 2004 Download for free at http://cnx.org/content/col10226/1.1
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