Carry flag - sub subtract instruction , Electrical Engineering

Carry Flag

CY is  reset  as explained  above.  ( in chapter 1 we have  sen in the 2 complement  methods of subtraction that  the carry  is set  when the result is positive. Here it is  same in step 3  but since  in step 4 microprocessor  complement the  carry flag it is  reset.

In gendered we can say  that after subtraction if the results  is positive  carry flag is reset. And if the  results  is negative carry flag  is set.

Posted Date: 4/4/2013 7:11:13 AM | Location : United States

Related Discussions:- Carry flag - sub subtract instruction , Assignment Help, Ask Question on Carry flag - sub subtract instruction , Get Answer, Expert's Help, Carry flag - sub subtract instruction Discussions

Write discussion on Carry flag - sub subtract instruction
Your posts are moderated
Related Questions
Illustrate the working of full wave rectifier using bridge rectifier. How is it different from centre tapped Rectifier ? Illustrate Avalanche and Zener breakdown. Draw & explain

Q. The unit impulse response h(t) of a linear system is h(t) = 5e -t cos(2t - 30°). Determine H(s).

Consider a simple zener voltage regulator with the circuit diagram shown in Figure (a). (a) For a small reverse resistance R Z S and V S - R S i out > V Z , show that v ou

Q. Discuss the disadvantages of an RC coupled amplifier? RC coupled amplifiers have a few disadvantages. The resistors use dc power and so the amplifier has low efficiency. The

Frequency variation in simple transmitters can be reduced by adding a _______ stage.

(a) The key elements of a protocol are the syntax, semantics and timing. Give a brief explanation of each of these key elements. (b) A file contains 4 million bytes. Compare

limitations and applications of following circuit theorems: telleans theorem superposition theorem norton theorem compensation theorem millman theorem reciprocity theorem maximum p

Error-Rate Control, Output-Rate Control, and Integral-Error (Reset) Control Let us consider a typical second-order servomechanism(containing two energy-storing elements) whose