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DEC :
A powerful new Alpha 64 bit RISC computer chip was introduced in the year 1977, as new VAX (Virtual Address Extension) Computer. The VAX was 32 bit computer line based on operating system, called VMS. This new computer system was more powerful and had better time-sharing capabilities than past DEC systems DEC net networking technology-enabled customers to attach different types of DEC computers together from small workstations to large corporate servers.
As the 80s drew to a close DECs were not IBM compatible and were designed as a way for users to attach to DEC server systems rather than stand-alone products. And DEC manufactured all the components for its PCs, resulting in systems that were much more costly than other PC vendors.
From 1984 to 1988 DEC developing its own RISC chip, the PRISM. By using these chips, DEC introduced a UNIX workstation running on its own UNIX, Ultrix
The RISC chips are to be utilized in these new VAXes was a new 64 Bit chip, designed by DEC, code-named the Alpha.
I/O interface I/O devices such as displays and keyboards establish communication of computer with outside world. Devices may be interfaced in 2 ways Memory mapped I/O and I/
IMUL: Signed Multiplication: This instruction multiplies a signed byte by a signed bit in source operand e in the register AL or signed word in source operand by signed word in th
Ask question #MinimuWHAT ARE CONSTANTS AND WHAT DO THEY DO?m 100 words accepted#
Assembly Language Example Programs We studied the entire instruction set of 8086/88, pseudo-ops and assembler directives. We have explained the process of entering an assembly
Basic Microprocessor Architecture and Interface : Introduction: Intel launches its first 4-bit microprocessor 4004 in the year 1971 and 8-bit microprocessor 8008 in the y
Software Interrupts Software interrupts are the result of an INT instruction in an executed program. It may be assumed as a programmer triggered event that immediately stops e
LABEL : The Label directive which is used to assign a name to the current content of the location counter. At the beginning of the assembly process, the assembler start a loca
RICS/CISC Architecture An essential aspect of computer architecture is the design of the instruction set for the processor. The instruction set selected for a specific compute
DMA Hardware (8237 DMAC) : 1)Processor contain HOLD/HOLD Acknowledge lines to interact with 8237 o DMAC can achieve control of ISA bus by asserting HOLD o P
1. Write an assembly program that adds the elements in the odd indices of the following array. Use LOOP. What is the final value in the register? array1 DWORD 10, 20, 30, 40, 50, 6
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