intel 80286

The 80286 (also indicated simply under the name of 286) were the first processor able throw of the programs conceived for him of the 'predecessors of S (and this standard remain the same ones until today - thus the standard x86). The 286 came in savours from 8,10, and 12 megahertz in 1982 when it was released, thereafter high until 25MHz, fol�tr� a full architecture of 16 bits. There was no version with 8 bits (aka 288) presented simultaneously to its release (the era with 8 bits finished).

The 80286 presented some significant prolongations of microprocessor. Intel continued to prolong the whole of instruction; the 286 also had a new device: protected mode, which made it possible multiple programs to function using the same memory without fear of the accidents. The advantage (rather the trick) of 286 added four more lines of address to the 80186 all 20 lines have of address of the processor (8086, 8088 and - 2^20 = 1MB of accessible memory), giving to the 286 the capacity to address 16MB memory (2^24), but only in protected mode. Unfortunately the programs could not employ the memory of the true mode; and once in protected mode, you were wedged there, gaining 286 deaths of name �of brain �. This was why 286 processors could not run the environment of Windows (versions early of preparing of DOS). There was a skirting for this really, but the majority of the programs for DOS and Windows were not adjusted on them. The device easily of the change of truth to the mode protected and the back intoduced only in 286 the 'sucessor from S, 386.

Intel 80286

In 1985 and the years according to, the 286 were enormously employed in the next generation of the PC of IMB of the 's, the PC-AT.

During the reign of the 286, the first chipsets were presented. The tiddlywinks of computer were nothing more than one unit pieces which replaced dozen other peripheral pieces, while identical functionality of maintenance.