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Is it possible to add 16-bit data in the 8085 microprocessor?
(a) Addition of 16 bit numbers using 8 bit operation – It is a lengthy method and requires more memory as compared to 16 bit operation. (b) Addition of 16 bit numbers using 16 bit operation – It is a very short method and less memory is also required as compared to 8 bit operation.
Is 8085 an 8-bit or a 16-bit microprocessor?
Although the 8085 is an 8-bit processor, it has some 16-bit operations. Any of the three 16-bit register pairs (BC, DE, HL or SP) can be loaded with an immediate 16-bit value (using LXI), incremented or decremented (using INX and DCX), or added to HL (using DAD).
How can we handle the 16-bit data in 8085 microprocessor?
To handle 16-bit data two 8-bit registers can be combined. The combination of two 8-bit registers is called a register pair. The valid register pairs in Intel 8085 are B-C, D-E and H-L. The H-L pair is used to address memories.
Which instruction is used to add 16-bit no?
instruction adc – add
Following this, we use the instruction adc – add with carry – to add the upper bytes of our 16-bit numbers. adc is used just like add, taking two registers as operands, computing their sum, and storing the result in the first register.
What are 16-bit numbers?
A 16-bit integer can store 216 (or 65,536) distinct values. In an unsigned representation, these values are the integers between 0 and 65,535; using two’s complement, possible values range from −32,768 to 32,767. Hence, a processor with 16-bit memory addresses can directly access 64 KB of byte-addressable memory.
How can I add two 16-bit numbers in 8086?
8086 program to add two 16-bit numbers with or without carry
- Load 0000H into CX register (for carry)
- Load the data into AX(accumulator) from memory 3000.
- Load the data into BX register from memory 3002.
- Add BX with Accumulator AX.
- Jump if no carry.
- Increment CX by 1.
- Move data from AX(accumulator) to memory 3004.
Why program counter is 16-bit register?
The program counter acts as a pointer to the next instruction to be executed and always contains the 16-bit address of the memory location of next instruction. It is a 16 bit register as 8085 has 16 address lines.
How do you write 16-bit numbers?
The smallest signed 16-bit number is -32768 and the largest is 32767. For example, 1101,0000,0000,01002 or 0xD004 is -32768+16384+4096+4 or -12284.
What is better 8 bit or 16-bit?
In terms of color, an 8-bit image can hold 16,000,000 colors, whereas a 16-bit image can hold 28,000,000,000. Note that you can’t just open an 8-bit image in Photoshop and convert it to 16-bit. This extra bit depth does come at a cost. More bits means bigger file sizes, making images more costly to process and store.
What is the largest 16-bit number?
65,535
A 16-bit register can store a positive number between 0 and 216 − 1, that is, 65,535. Thus a 16-bit word can be used for positive numbers in the range 0 to 65,535.