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In Computerprocessors, the overflow flag (sometimes called Vflag) is usually a single Bitin a system Status_registerused to indicate when an Arithmetic_overflowhas occurred in an operation.
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If the A register was intialized to zero and incremented 512 times what would be the contents of the A register?
If the A register in an 8085 was initialized to zero and then incremented 512 times, its final value would be zero.Since the 8085 is an 8 bit computer, the A register would overflow from 255 to 0 on the 256th increment, and overflow again from 255 to 0 on the 512th increment.
What is the error that occurs when a number becomes too large for the computer to register it?
Arithmetic overflow.
What is timer overflow?
Timer Overflow is when the timer value exceeds the maximum count it can reach, let say 256 for 8-bit and 65536 for 16-bit timers.
What is the difference among positive overflow exponent overflow and significant overflow?
The positive is just a little bit of an excess. The significant one is when a lot more excess has happened.
Carry flag and over flow flag in 8051?
Carry flag is the the bit 7 of the 8 bit PSW register, whenever there is an addition or subtraction process that has a carry on its 7th bit, the carry flag (C/CY) will be set to 1. OV is set to 1 when there is an arithmetic overflow. this applies to signed and unsigned operations.
What isBX register?
The BX register is a general purpose register. It is a 16 bit register that represents the contatenation of the two 8 bit registers BH (B High) and BL (B Low)
What do you mean by arithmetic overflow?
arithmetic overflow is a situation that occurs when a calculation or operation yields a result that is too large for the system storage or register to handle. Overflow can also refer to the amount the result exceeds the memory designated for storage. ( basically too much, That's why its called overflow)
How do you detect overflow when adding two numbers in 2s complement form?
You can detect overflow if the result turns out to be negative (which is the same as checking to see if the sign bit is 1). For example if you tried to add 5 and 6 in to 4-bit 2s complement, you would get 0101 + 0110 = 1011, which is a negative number since the sign bit (the 1 on the left) is a 1. This is an overflow.
What is the meaning of bit-width?
bit width is the sizelength of the register which is assigned a value
Which are the various 16-bit registers in Intel 8085?
The various 16-bit registers on the 8085 are BC, DE, HL, SP, PC.
What is the specific purpose of hl register?
HL is a general purpose 16 bit register. It is also the address in memory of the M register.
How many bits are contained in the A register of a 8085 CPU?
8085 is a 8 bit microprocessor and so A register which is also known as accumulator is also 8 bit.
