Bit manipulation techniques and mathematical functions, Computer Engineering

Assignment Help:

 Within micro controller's software, it is very useful to be able to manipulate binary bits i.e. from ports etc. The ALU has command to shift data, rotate data, compare data, set/clear bits, test bits and logical operate on data.

  LSLA     i.e shift A one place to the left fill up with 0
  LSLB     i.e shift B one place to the left fill up with 0
  LSRA     i.e shift A one place to the right fill up with 0
  LSRB     i.e shift B one place to the right fill up with 0
  ROLA     i.e rotate A one place to the left through carry
  ROLB     i.e rotate B one place to the left through carry
  RORA     i.e rotate A one place to the right through carry
  RORB     i.e rotate B one place to the right through carry
   CBA      i.e  A-B  with no answer stored just flags set
  CMPA    i.e compare A with memory i.e A-M
  CMPB    i.e compare B with memory i.e B-M
  BSET $20,#$1   i.e set bit 1 of memory address 20
  BCLR $20,#$1   i.e clear bit 1 of memory address 20
  BITA $20    i.e Check bit mask found in A with address 20
  BITB $20    i.e Check bit mask found in A with address 20
  ANDA $20   i.e logical and A with data at address 20
  EXORA $20  i.e logical exor A with data at address 20
  COM $20     i.e logical invert data at address 20 
  ORRA $20    i.e logical OR A with data at address 20
  MUL           ;Multiplies axb and stores the answer in D i.e both
  FDIV          ;Fractional divide using D/IX
  IDIV           ;Integer divide using D/IX
  ADDD         ;16 bit add to D
  DAA           ;Decimal adjust add sum to BCD data


Related Discussions:- Bit manipulation techniques and mathematical functions

Serial execution and parallel execution, Serial Execution Execution of ...

Serial Execution Execution of a program consecutively, one statement at a time. In the easiest sense, this is what occurs on a one processor machine. However, even many of the

Discuss different mode of centralized stored program control, Explain SPC. ...

Explain SPC. Also discuss the different modes of Centralized SPC In stored program control systems, set of instructions or a program to the computer is stored into its memory a

What do youe mean of quality of service, Quality of Service: This is asses...

Quality of Service: This is assessed on the basis of customer's satisfaction.

How to maintain lists, How to maintain lists? To return from a high li...

How to maintain lists? To return from a high list level to the next-lower level (SY-LSIND), the user chooses back on a secondary list.  The system then gives the currently dis

Features of mpi-1, Features of MPI-1 Binding for FORTRAN and C ...

Features of MPI-1 Binding for FORTRAN and C Collective communication Communication domains and Process groups Point-to-point communication Virtual process

Importance of using module-instance parameter, Using Module-Instance Parame...

Using Module-Instance Parameter: Parameter values can be overridden while a module is instantiated. New parameter values are passed at the time of module instantiation. Top-

Flynn’s classification, Flynn's Classification Flynn's classification i...

Flynn's Classification Flynn's classification is based on multiplicity of data streams and instruction streams observed by the CPU during program execution. Let Ds and Is  are

Coso framework, The COSO Framework consists of six broad classes of control...

The COSO Framework consists of six broad classes of control activities. Initial responses should identify and define one of the broad classes (Ex: segregation of duties or indepe

Show network topology in digital system, Q. Show Network Topology in digita...

Q. Show Network Topology in digital system? This deals with the geometrical arrangement of nodes (endpoints consisting of physical devices such as terminals, printers, PCs, and

is risc always fast, It is fast because it has got separate program and da...

It is fast because it has got separate program and data memory(highly pipelined architecture)

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd