The 432, still entirely too slow, didn't hit the market until 1980, where it sank without a trace, becoming one of the most spectacular failures in microprocessor history.
When Intel realized the 432 was in a deep hole, it rushed to staff a new project that would become the 8086. The company assigned two engineers to develop the instruction set and basic design of the chip and gave them just three weeks to complete the task. The 8086 went into production in 1978, just one year after its conception. Its design became the basis for the x86s used in all IBM-compatible PCs to date.
Perhaps because of its rushed origins, the 8086 has many unusual features.
The programmer's options were limited because certain instructions were tied to specific registers: the ADD instruction can access only register A, the LOOP instruction uses only register C, etc. And the segmented addressing allows confusing situations, such as two program addresses pointing to the same location in memory, or the same address pointing to two different memory locations. Although some of these quirks have been fixed in later processors, programming x86 chips remains a challenge.
The 432 supported:
Data store using multiple pointer levels
Memory error correction