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How do you clear carry flag in 8085?
You can clear carry by using these two commands STC // it will force to set the carry flag CF=1// CMC //it willl complement that carry and you have done, CF=0 // in single instruction u can reset carry by using any logical instruction. because logical operation resets carry always... eg. XRI 00h or ANI 0F Geniusminds.com
Why computer made for?
A computer is a device that can be programmed to carry out a set of math or logical operations automatically.
What is the use of computer system?
A computer is a general purpose device that can be programmed to carry out a set of arithmetic or logical operations automatically.
What are the uses of Auxiliary Carry flag?
The Auxiliary Carry flag of the Intel 8085 is used to store the carry/borrow from the least significant 4 bits of an 8 bit arithmetic operation. This bit (and the Carry flag from the most significant 4 bits) is needed by the Decimal Adjust Accumulator instruction to convert the result of the 8 bit arithmetic operation to correct 2 digit Binary Coded Decimal format.
Show the bit positions of various flags in 8085 flag register?
The 8085 microprocessor has 5 flags: 1. Zero flag: The zero flag is set, when the ALU operation results a zero . 2. Carry flag: If an arithmetic operations results in a carry, this flag is set. 3. Parity flag: This flag is set, when an arithmetic or logical operation results in a data, which has even number of 1s. If otherwise, it is reset. 4. Sign flag: After the execution of an arithmetic or logic operations, if D7 bit of the accumulator is 1, it indicates a negative number and this flag is set. If otherwise, it is reset. 5. Auxiliary Carry flag: used for BCD Operations, During the BCD operations, if D3 bit producing the carry then the AC bit set as1, otherwise the bit is 0. 6. Carry Flag: when a carry is generated by digit D7, then the carry flag set as 1, otherwise the bit will be 0.
Why DAD instruction only affect carry flag in 8085?
Carry
What is data manipulation instruction?
Uses the ALU in the CPU to carry out these instructions. One of the operand must be kept in theaccumulator or reg. A for 8-bit operations. For 16-bit operations the operand is kept in a registerpair HL. or we can say data manipulation instructionvirtual all data operations use:accumulator for byte operationsor carry bit for bit operationslogical operations: AND OR XOR NOT called compelementbit operation:carry bit,many bit in register.
What is meant Auxiliary Carry Bit?
The Auxiliary Carry Bit (AC) is a flag in computer architecture, particularly in binary-coded decimal (BCD) arithmetic. It indicates whether a carry was generated from the lower nibble (the four least significant bits) during an arithmetic operation, such as addition or subtraction. This bit is useful for BCD operations, as it helps manage the carry between the two nibbles when processing decimal numbers. In many microprocessor architectures, the AC flag is used in conjunction with other status flags to provide accurate arithmetic results.
How much fuel can you carry in an auxiliary fuel tank?
30 gallons
ARE the two smaller units of the processor are CU and ALU?
Yes, the two smaller units of a processor are the Control Unit (CU) and the Arithmetic Logic Unit (ALU). The CU manages and coordinates the activities of the processor, directing data flow and instruction execution. The ALU performs arithmetic and logical operations on the data processed by the CPU. Together, they enable the processor to execute instructions and carry out tasks.
What type gun does black ops carry?
Black Operations, or covert operations, are not a group, but a category for missions that soldiers carry out. Most likely, soldiers in black operations carry various assortments of weapons.
What are the functions of cu and alu?
The ALU (Arithmetic Logic Unit) performs arithmetic and logical operations on data such as addition, subtraction, AND, OR, and NOT operations. The CU (Control Unit) manages the execution of instructions, fetching them from memory, decoding them, and coordinating the ALU, memory, and input/output devices to carry out the instructions.
