Subtract registers and borrow from accumulator, Electrical Engineering

Subtract Registers and Borrow from Accumulator

The  contents of the  register  and borrow  flag  are subtracted from   the contents of the accumulator and the  result is  stored  in the accumulator. The carry  flag behaves like the borrow flag in subtract operation. The instruction format is

SUB R                   (A - A- (R + Borrow)

Actually  the previous  borrow  is added to the subtrahend fist. Then  2  complement  of the results  is obtained and finally it is added to the accumulator to obtain  the final result of  the operation  similar  to SUB  instructions.



Posted Date: 4/4/2013 7:17:28 AM | Location : United States

Related Discussions:- Subtract registers and borrow from accumulator, Assignment Help, Ask Question on Subtract registers and borrow from accumulator, Get Answer, Expert's Help, Subtract registers and borrow from accumulator Discussions

Write discussion on Subtract registers and borrow from accumulator
Your posts are moderated
Related Questions
Advantages of High  level  Languages a.It is  easy  to learn  write and debug  the program  written in high  level  languages. b.Programs are more  legible as compared to m

Q. Explain the basic macroeconomic policy trilemma for open economies. Answer: Of three goals mainly countries share - independence in financial policy and stability in t

(a) Now consider a typical open-wire transmission line with parameters of R = 14 /mi, L = 4.6 mH/mi, C = 0.01 µF/mi, and G = 0.3×10 -6 S/mi. If the line operates at 1 kHz, find t

Q. Mention some characteristics of transistors? · When a NPN transistor is working, there is always a constant 0.6 volt drop between the base and emitter, i.e., the base is alw

Flex Routing : You can see that your labour will have been in vain unless you take steps to ensure that flexes are routed safely and well clear of possible sources of danger.

1.   Calculate the combined resistance of three resistors connected in series with resistance of 20 ohm, 30 ohm and 40 ohm? (to achieve a pass grade, solve problems with resisto

Enhancement type MOSFET In these types of devices operate by comprising a channel enhanced in the semiconductor material in which no channel was constructed, they are termed

Q. A negative impedance converter circuit shown in Figure is used in some applications where inductors cannot be utilized or where negative resistance is beneficial. (a) Determi

Modern complex systems are normally constructed by interconnecting sub-units. Therefore the systems engineer is often not too concerned about the details of what is inside these

Q. What is error-rate control? A system is said to possess error-rate damping when the generation of the output in some way depends upon the rate of change of the actuating sig