Flag register in the 8085 microprocessor

Topics > IT Topics > 8085 > Flag register in the 8085 microprocessor > Post your comment

 
Flag register in the 8085 microprocessor
05-25-2012 03:30 AM

Explain briefly the flag register in the 8085 microprocessor.



- The flag register in 8085 is an 8-bit register which contains 5 bit positions.

- These five flags are of 1bit F/F and are known as zero, sign, carry, parity and auxiliary carry.

- For sign flag if the result of an MSB operation is 1 then it is set else it is reset.

- The zero flag is set of the result of an instruction is zero.

- The auxiliary carry flag is used for BCD operations, not free to the programmer.

- The carry flag is used for carrying and borrowing in case of addition and subtraction operations.

- The parity flag is used for results containing an even number of one's.
Flag register in the 8085 microprocessor
ray 08-26-2012 04:56 AM

Useful..thanks :)
RE: Flag register in the 8085 microprocessor
thanvee 08-19-2014 10:25 AM

it was very useful to my microprocessor exam .thank u so much
RE: Flag register in the 8085 microprocessor
Bhavesh bamaniya 04-9-2015 08:59 AM

its very useful details for us.
RE: Flag register in the 8085 microprocessor
the undying 04-16-2015 10:31 AM

thanks:-)
RE: Flag register in the 8085 microprocessor
mahatva zamindar 05-7-2015 01:51 AM

bhaiya mujhe kuch bhi nhii aata --- mahatva zamindar ..
s.v.p.c ..


c.s

Post your comment

<< Previous
Control and timing circuitry of the 8085.
Next >>
What is a stack pointer register? - 8085

PhotoshopCPUGnuplot ProgrammingWeb Semantic


Also Read
Steps involved in a Fetch Cycle - 8085
Flag register in the 8085 microprocessor
What are WAIT states in microprocessors? - 8085
What is a stack pointer register? - 8085
Explain all the addressing modes of the 8085 with the help of examples.
How can signals be classified for the 8085 microprocessor?
Describe briefly the accumulator register of 8085.
Control and timing circuitry of the 8085.
What are the boons and banes of having more general purpose registers in a microprocessor.
Flow of a typical Instruction Word - 8085
Externally initiated operations - 8085
What differences can you state between the HLT and HOLD states? - 8085
Different types of data transfers possible in the 8085.
What happens when the INTR signal goes high in the 8085
Explain briefly the TRAP input for the 8085.
What are the two major differences between INTR and other interrupts ( hardware)? - 8085
Classify interrupts on the basis of signals. State their differences. - 8085
Write a program that will store the contents of an accumulator and flag register at locations 2000H and 2001H.
Interrupt driven mode of data transfer - 8085
Various functional blocks of the 8085 microprocessor. - 8085
 
 
 
Home | About us | Sitemap | Contact us