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An mmr prefix can be used for indirect memory operands to assert that the memory access is to a memory-mapped register. This prefix can be used on Xmem, Ymem, indirect Smem, indirect Lmem, and Cmem operands. Refer to 1-19 of the SPRU374 for more information if necessary.

The mmap qualifier can be used with numerous instructions to force an access to a memory-mapped register. It can be used with Smem or Lmem direct memory access to prevent the dma access from being relative to the SP or DP. Instead, it will be relative to the memory-mapped register data page start address, which is 00 0000h.


MOV mmap(AR6), BSA67 ; sets BSA67 = value in AR6 ; mmap must be used MOV AR1, AR5 ; sets AR5 = AR1

Immediate addressing: #k3, #k5, k, #k9, #lk

Immediate addressing means that the numerical value of the data is itself provided within the assemblyinstruction. Various TMS320C55x instructions allow immediate data of 3, 4,, 5, 7, 8, 9, 12, 16, 23 bits in length, which are signifiedin the assembly language syntax descriptions with one of the above symbols. The 16-bit form is the most common and issignified by #k16 .

An immediate data operand is almost always specified in assembler syntax by prepending a pound sign ( # )to the data. Depending on the context, the assembler may assume that you meant immediate addressing anyway.


ADD #FFFFh, *AR3 ; The content addressed by AR3 is added to a signed 16-bit ; value and the result is store back in into the location ; addressed by AR3 AMOV #7FFFFFh, XAR0 ; The 23-bit value is loaded into XAR0

Labels make this more complicated. Recall that a label in your assembly code is nothing more than shorthand for thememory address where the labeled code or data is stored. So does an instruction like

MOV #coef, AR1 ; sets AR1 = memory address of label coef

mean to store the contents of memory location coef in AR1 , or does it mean to store the memory address coef itself in AR1 ? The second interpretation is correct.

Many instructions have several versions allowing the use of different addressing modes (see mov for a good example of this). With these instructions, including thepound sign is not optional when specifying immediate addressing. The only safe rule, then, is always to prefix thelabel with a pound sign if you wish to specify the memory address of the label and not the contents of that address.

Direct addressing: smem and others

In the modes called direct addressing by TI, the memory offset is combined with values in the DPH (the high part of the extended data page register) and DP (data page register) or the SPH (high part of the extended stack pointer) and SP (data stack pointer) to obtain a complete 23-bit data-memory address. The DSP uses SPH/SP or DPH/DP depending on the value of the CPL bit in status register ST1_55.

Questions & Answers

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
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
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
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.
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
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
characteristics of micro business
for teaching engĺish at school how nano technology help us
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
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
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.
what is the actual application of fullerenes nowadays?
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.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Digital signal processing laboratory (ece 420 55x). OpenStax CNX. Jan 18, 2010 Download for free at http://cnx.org/content/col10397/1.10
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