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Memory Mapped I/O
Memory I/O devices are mapped into the system memory map with ROM and RAM. To access a hardware device, simply write or read to those 'special' addresses by using the normal memory access instructions. The advantage to this method is that all instruction which may access memory may be utilized to manipulate an I/O device. The disadvantage to this method is that the complete address bus might be completely decoded for all devices. For instance, a machine with a 32-bit address bus would need logic gates to resolve the state of all 32 address lines to accurately decode the particular address of any device. This increases the cost of adding hardware to the machine.
1- Write an assembly program that: a- Defines an array of 10 (word type)elements; b- Finds out the number of negative elements c- Calculate the summation of the posi
Write a program that performs the addition, subtraction, multiplications, division of the given operands. Perform BCD operation for addition and subtraction.
ADC: Add with Carry:- This instruction performs the similar operation a like ADD instruction, but adds the carry flag bit (which might be set as a result of the previous calculatio
write an assembly language program that has two subroutines : one for encrypting alphabates of a string and second fo decrypting the encoded string . in encryption simply converta
NAME : Logical Name of a Module: The NAME directive which is used to assign a name to an assembly language program module. The modulecan now be mention to by its declared name.
The main objective of the assignment is to explore the knowledge regarding parallel ports of a computer system. You can read and write datato/from the parallel port using IN and OU
define accounting.briefly explain the accounting concepts which guide the accountant at the recording stage.
DIV: Unsigned Division:- This instruction performs unsigned division operation. It divides an unsigned word or double word by a 16-bit or 8-bit operand. The dividend might be in t
REP : Repeat Instruction Prefix :- This instruction is utilized as a prefix to other instructions. The instruction in which the REP prefix is provided, is executed repetitively
i want to develop traffic light system so which kind of software is needed to develop this project?
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