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CBW: Convert Signed Byte to Word: This instruction converts a signed byte to a signed word. In other terms, it copies the sign bit of a byte to be converted to all of the bits in the higher byte of the result word. The byte to be converted might be in the AL. The result will be stored in the AX. It does not affect any flag.
CWD: Convert Signed Word to Double Word: This instruction copies the sign bit of the AX register to all the bits of the DX register. This operation is to be done before signed division. It does not make affect on any flag.
2. Write a program to separate out positive and negative numbers from a given series of 16-bit hexadecimal numbers.
ALP to preform of two 16-bit numbers in register addressing mode
Linking a program The DOS linking program LINK.EXE links the different object modules of function library routines and source program to produce an integrated executable code o
how to write the alp for matrix addition in microprocessor 8086?
what is the hex value in ax after executing the instructions ax= 1E8A bx=4080 add al,bl sub ah,bh
General Data Registers Given figure indicate the register organization of 8086. The registers DX, CX, BX and AX are the general purpose 16-bit registers. AX is behaved as 16-bi
How to write an assembly program The initial step in writing an assembly language program is to identify and study the problem. After studying the problem, choose the logical m
The modes are determined by the contents of the control register, whose format is given in Figure These modes are: Mode 0: If a group is in mode 0, it is divided into 2 sets.
There are 3 kinds of OCWs. The command word OCWI is utilized for masking the interrupt requests; when the mask bit corresponding to an interrupt request is value 1, then the requ
The real time System (RTS) : Calling the clock real-time is somewhat of a misnomer because it only shows the time setting it has been given. The RTC is the other half of chip
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