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The 8086 [3] (also called iAPX 86) [4] is a 16-bit microprocessor chip designed by Intel between early 1976 and June 8, 1978, when it was released. The Intel 8088, released July 1, 1979, [5] is a slightly modified chip with an external 8-bit data bus (allowing the use of cheaper and fewer supporting ICs), [note 1] and is notable as the processor used in the original IBM PC design.
8086/8088 datasheet documents only base 10 version of the AAD instruction (opcode 0xD5 0x0A), but any other base will work. Later Intel's documentation has the generic form too. NEC V20 and V30 (and possibly other NEC V-series CPUs) always use base 10, and ignore the argument, causing a number of incompatibilities: 0xD5: AAM
The SDK-86 (system design kit) was the first available computer using the Intel 8086 microprocessor. It was sold as a single board kit at a cheaper price than a single 8086 chip because Intel thought that the success of a microprocessor depends on its evaluation by as many users as possible.
During the mid-1980s NEC and Intel had a long-running US federal court case about microcode copyright. [26] NEC had been acting as a second source for Intel 8086 CPUs with its NEC μPD8086, and held long-term patent and copyright cross-licensing agreements with Intel. In August 1982 Intel sued NEC for copyright infringement over the microcode ...
Version 4.0 of OMF for the 8086 family was released in 1981 under the name Relocatable Object Module Format, [6] [3] [4] and is perhaps best known to DOS users as an .OBJ file. Versions for the 80286 ( OMF-286 ) [ 7 ] [ 8 ] and the 32-bit 80386 processors ( OMF-386 ) [ 9 ] [ 10 ] [ 3 ] were introduced in 1981 and 1985, respectively.
Unreal mode (Intel 80286) Virtual 8086 mode (Intel 80386) System Management Mode ... Template documentation This page was last edited on 4 October 2023 ...
Using the software interrupt 21h instruction to call the MS-DOS operating system for output to the display – other samples use libc's C printf() routine to write to stdout. Note that the first example, is a 30-year-old example using 16-bit mode as on an Intel 8086. The second example is Intel 386 code in 32-bit mode.
ISIS-II has been distributed as part of the Intel Microprocessor Development System and includes standard operating system commands (COPY, DELETE, DIR, RENAME, FORMAT) [3] and debugging software (assembler, linker and debugger for external debugging in the developed device). There are two editors, one of which, AEDIT, contains editing macros ...