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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

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
Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
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?
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
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
what is system testing
what is the application of nanotechnology?
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
anybody can imagine what will be happen after 100 years from now in nano tech world
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
silver nanoparticles could handle the job?
not now but maybe in future only AgNP maybe any other nanomaterials
I'm interested in Nanotube
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
can nanotechnology change the direction of the face of the world
Prasenjit 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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