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Shadow RAM is a copy of Basic Input/Output Operating System (BIOS) routines from read-only memory (ROM) into a particular area of random access memory (RAM) so that they can be accessed more rapidly. Access in shadow RAM is typically in the 60-100 nanosecond range while ROM access is in the 125-250 ns range. In some operating systems like DOS, certain BIOS routines are not only used during the boot or start-up of the system, but also during normal operation, particularly to drive the video display terminal. In Windows and OS/2, thus, these routines are not used and the use of shadow RAM is not essential. In some systems, the user can turn the use of shadow RAM off or on.
For this machine there can be two more possible addressing modes in addition to direct andimmediate. Opcode field of an instruction is a group of bits which define various pro
Why is the Wait-For-Memory-Function-Completed step required when reading from or writing to the main memory? WMFC step is needed for the write control signal / read control si
Define the state and instance of properties of object A state encompasses all properties of object along with values of each of these properties. An instance is a concr
what is distributed computing
Remember, the value of α is between 0 and 1. Now, let us put some values of α and compute the speed up factor for increasing values of number of processors. We get that the S(N) k
Example: CMP AX,BX ; compare instruction: sets flags JE THERE ; if equal then skip the ADD instruction ADD AX, 02 ; add 02
E-Cash: E-cash is cash shown by two models. One is the on-line form of e-cash (introduced by DigiCash) which permits for the completion of all types of internet transactions.
Define dynamic linking. Dynamic linking is same to dynamic loading, rather that loading being postponed unless execution time, linking is postponed. This feature is usually us
1.Local queue -is a actual queue 2.Cluster queue -is a local queue that is called as throughout a cluster of queue managers 3. Remote queue -structure explaining a queue
Define the Pulse-Triggered (Master-Slave) Flip-flops? The term pulse-triggered signify that data are entered into the flip-flop on the rising edge of the clock pulse, though th
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