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Inherent addressing
Here the address is already built in to the instruction i.e. inherent to the code ABA ; Add A to B and store the answer in A Simple programs using the 68HC11 language
This section of functions include instructions such as ALU functions, simple movement and logically operations .Let us consider the addition of two 8 bit numbers
Program One: Data is immediate LDAA #$fe ; Load hex fe into accumulator A ADDA #$1 ; Add 1 hex to A i.e total = ff hex Program two: Direct addressing and extended addressing
Assume the data is stored at the following Ram address
Address Data 501 fe Number One 502 01 Number Two 503 Result LDAA $501 ;Load fe from address 501 into A ADDA $502 ;Add 01 from address 502 into A STAA $503 ;Store the answer ff at address 503 Program three: Index addressing
Address Data 500 fe Number One 501 01 Number Two 502 Result LDX #$500 ;Load IX with 500 base address LDAA $0,X ;Load data from 500 + 0 into A i.e fe ADDA $1,X ;Add data from 500+1 to A i.e ff STAA $2,X ;Store A at address 500+2
What is the need of interrupt controller? The interrupt controller is employed to expand the interrupt inputs. It can handle the interrupt requests from several devices and pe
Illustrate about 8259 8259A adds 8 vectored priority encoded interrupts to the microprocessor. We can expand it to 64 interrupt requests by using one master 8259A and 8 slave
What is the significance of the memory table 'SCREEN'? At runtime, attributes for every screen field are stored in the memory table called 'SCREEN'. We need not declare this
Q. Find the average of two values? Find the average of two values which are stored in ; Memory locations named FIRST and SECOND ; And puts result in memory location AVG
In successive-approximation A/D converter, offset voltage equal to 1/2 LSB is added to the D/A converter's output. This is done to ? Ans. It is done to reduce the maximum quantiz
Q. What is Effective Address ? The symbol EA (Effective Address) refers to a physical address in a non-virtual memory environment and refers to a register in a virtual memory a
Bitwise-AND Operator: & AND-expression : relational-expression AND-expression & equality-expression The bitwise-AND operator (&) compares each bit of its first operand t
As an XML expert you are needed to model a system for an online furniture shop. After an interview with the shop manager you have the certain information: The detail of th
What is Instruction Cycle The simplest model of instruction processing can be of two steps. The CPU reads /fetches instructions (codes) from memory one at a time and executes i
The Communication Traffic gives a pictorial view of the communication traffic in the interconnection network with respect to the time in progress. The Communication Traffic shows t
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