Intel iAPX 432

The iAPX 432 (Intel Advanced Performance Architecture) is a discontinued <a href="/facts/Computer_architecture/tHtwxgR2">computer architecture</a> introduced in 1981. It was <a href="/facts/Intel/SMF0gJJX">Intel</a>'s first <a href="/facts/32-bit/TDMVce8s">32-bit</a> <a href="/facts/Microprocessor/Fx9CaQht">processor</a> design. The main processor of the architecture, the general data processor, is implemented as a set of two separate integrated circuits, due to technical limitations at the time. Although some early 8086, 80186 and 80286-based systems and manuals also used the <a href="/facts/IAPX/XugvBeVb">iAPX</a> prefix for marketing reasons, the iAPX 432 and the 8086 processor lines are completely separate designs with completely different instruction sets.
The project started in 1975 as the 8800 (after the <a href="/facts/Intel_8008/BccvN1qS">8008</a> and the <a href="/facts/Intel_8080/32FvNTcD">8080</a>) and was intended to be Intel's major design for the 1980s. Unlike the <a href="/facts/Intel_8086/sS9dlSdK">8086</a>, which was designed the following year as a successor to the 8080, the iAPX 432 was a radical departure from Intel's previous designs meant for a different market niche, and completely unrelated to the 8080 or <a href="/facts/X86/Kypq5fgu">x86</a> product lines.
The iAPX 432 project is considered a commercial failure for Intel, and was discontinued in 1986.

Intel iAPX 432 open-in-new

Intel iAPX 432