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What are program-invisible registers?
Ans: the local and global descriptor tables are found in the memory system. To access and specify the address of these tables, program invisible registers used. Program invisible registers aren't directly addressed by software so they are given a name. GDTR (global descriptor table register) and IDTR (interrupt descriptor table register) comprises the base addresses of descriptor table and its limit. Limit of each descriptor table is 16 bits as maximum table length is 64 Kbytes. When protected mode operation is desired, address of the global descriptor table and its limit are loaded into GDTR.
Convert the decimal number 430 to Excess-3 code ? Ans. Excess 3 is a digital code acquired from adding 3 to every decimal digit and after that converting the res
Logical shift A logical shift operation transfers 0 through serial input. We apply symbols shl and shr for logical shift left and shift right microoperations, examples:. R1
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1.0 By working throughthe first time guide this will gain familiarity with the on board monitor and the PC cross assembler After connecting the system to the terminal program,
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