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In order to support IA-32, the Itanium can switch into 32-bit mode with special jump escape instructions. The IA-32 instructions have been mapped to the Itanium's functional units. Though, the Itanium is built primarily for speed of its EPIC-style instructions, and because it has no out-of-order implementation capabilities, IA-32 code implements at a severe performance penalty compared to either the IA-64 mode or the Pentium line of processors. For example, the Itanium functional units do not automatically make integer flags as a side effect of ordinary ALU computation, and do not intrinsically support multiple outstanding unaligned memory loads. There are also IA- 32 software emulators which are freely available for Linux and Windows, and these emulators typically outperform the hardware-based emulation by around 50%. The Linux emulator is available from some Linux vendors such as Novell and from Intel itself and the Windows emulator is available from Microsoft. Given the superior performance of the software emulator and despite the fact that IA-32 hardware accounts for less than 1% of the transistors of an Itanium 2, Intel plan to eliminate the circuitry from the next- generation Itanium 2 chip codenamed "Montecito".
State about the Logic Micro-operations These operations are performed on binary data stored in register. For a logic micro-operation each bit of a register is treated as a diff
The following switching functions are to be implemented using a Decoder f 1 = ∑ m(1, 2, 4, 8, 10, 14) f 2 = ∑ m(2, 5, 9, 11) f 3 = ∑ m(2, 4, 5, 6, 7) The minimum configur
A router connects to at most K networks. How many routers R are required to connect to N networks? Derive an equation that gives R in terms of N and K. If N K and K >=2 this
managing devices and disks
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A data structure in which an element is added and detached only from one end, is known as Stack
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Explain crossbar exchange, with all call processing steps and diagrams. The fundamental idea of crossbar switching is to give a matrix of n x m sets of contacts with only n + m
Memory utilization factor shall be computed as? Ans. memory in use/total memory connected.
Q. QWERTY - Keyboard Layout ? A keyboard layout is arrangement of keys across the keyboard. There is one keyboard layout which anybody who has worked on a standard keyboard or
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