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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 $20 i.e logical OR A with data at address 20 MUL ;Multiplies axb and stores the answer in D i.e both FDIV ;Fractional divide using D/IX IDIV ;Integer divide using D/IX ADDD ;16 bit add to D DAA ;Decimal adjust add sum to BCD data
What is hit? A successful access to data in cache memory is known as hit. Normal 0 false false false EN-IN X-NONE X-NONE
The Boolean expression A‾.B + A.B‾ + A.B is equivalent to ? Ans. The Boolean expression A‾ .B + A. B‾+ A.B is equivalent to A + B (A‾ .B + A. B‾+ A.B = B( A‾ + A) + A. B‾ =
Q. Example of processor arrangements? !HPF$ PROCESSORS P (10) This initiates a group of 10 abstract processors assigning them combined name P. !HPF$ PROCESSORS Q (4, 4)
Q. Show Arithmetic Subtraction? The subtraction can be done easily using 2's complement by taking 2's complement of value which is to be subtracted (inclusive of sign bit) and
Explain non-pre-emptive algorithms? Non preemptive algorithms: In this algorithm a job is provided to CPU for execution as long as the job is non-completed the CPU cannot
Q. Show the conditional jump in program? CMP AX, BX ; compare instruction: sets flags JNE FIX ; if not equal do addi
Layout pages, can describe sections, which can then be overridden by particular views making use of the layout. Major and overriding sections is optional.
What is index register? In index mode the effective address of the operand is formed by adding a constant value to the contents of a register. The register used might be either
a. Define the Key features of Hop field Neural Networks. b. Compare and contrast among Neural Networks and Expert systems in terms of knowledge representation, acquisition and e
Fundamentals of IT 1. Explain the Impact of Information Technology on governments and educational organizations. 2. Explain application and system software. 3. Briefly ex
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