INTEL 80286

• The intel 80286 microprocessor is an advanced version of the 8086 microprocessor that was designed , for multipurpose , multi-tasking,multi user enviroments in 1983
• The 80286 is a high performance, 16-bit microprocessor with on-chip memory protection & management capabilities
• It finds its applications in control systems as an embedded controller
• It is available in 68-pin PLCC (plastic lead chip carrier), 68-pin LCC(Leadless Chip Carrier)& 68-pin PGA (Pin Grid Array) packages
• It has 24 address lines
• It address 16 MB of physical memory  & 1GB of virtual memory
• The 80286 works in 2 operating modes - Real Address Mode (RAM) & protected virtual address made (PVAM). The operation of RAM is objected compatible & PVAM is source code compatible
• It is 6 times faster than the 8086
• The internal structure of 80286 contains 4 separate processing units. these are Bus Interface Unit (BIU), Instruction Unit (IU), Address Unit (AU) & Execution Unit (EU)
• The 80286 does not contains a muxed address/data bus
• I prevents the applications programs from performing I/O responding to interrupts & calling the system service directly excepted through pre-established entry points.