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Why DAD instruction only affect carry flag in 8085?
Carry
What is the instruction for exit in 8085 microprocessors?
There is no exit instruction in the 8085. Do you mean return, as in from a function or interrupt? If so, the instruction is RET.
How compare instruction is used in 8085?
The compare and subtract instructions in the 8085 both subtract one operand from another, and set flags accordingly. The subtract instruction stores the result in the accumulator, while the compare instruction does not - except for the flags, the compare instruction "throws" the result away.
What is jump on carry in 8085?
Jump on Carry is simply a "JUMP" instruction which will transfer the control to some specific location if carry flag is set. For Example: JC 2004H This instruction will take the control to address location 2004H if carry flag is set.
Is there a multiply instruction?
Not in the 8085.
How many instruction are there in 8085 mp?
There are 74 instructions in the 8085 microprocessor.
What is the purpose of adc instruction according to 8085 microprocessor?
this instruction is used to add the specified register content to that of the accumulator along with the carry flag value. this instruction is used in processes which involve continuous addition.
Timing diagram of pop b instruction on 8085 microprocesser?
1. Memory Read - (PC) and then increment PC - Op Code C1 - Four clocks 2. Memory Read - (SP) and then increment SP - Transfer to C - Three clocks 3. Memory Read - (SP) and then increment SP - Transfer to B - Three clocks
What happens when MUL CH instruction is executed?
MUL is not an 8085 instruction.
Difference between rlc and ral in 8085?
In the 8085 microprocessor, the RLC (Rotate Left Carry) instruction shifts all bits of the accumulator left by one position, with the most significant bit (MSB) moving to the carry flag. In contrast, the RAL (Rotate Left Accumulator) instruction rotates the bits of the accumulator left without affecting the carry flag, as the carry bit is incorporated back into the least significant bit (LSB) of the accumulator. Essentially, RLC modifies the carry flag, while RAL involves the accumulator only.
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
Which is the longest instruction in 8085 instruction set?
CALL, requiring 18 clock cycles.
