page_title: Transputer
section_title: T4: 32-bit
hierarchical_section_title: Transputer / Implementations / T4: 32-bit
caption_attribution_description: English: Die shot of Inmos T425 transputer (IMST425-G20S).
context_page_description: The transputer is a series of pioneering microprocessors from the 1980s, featuring integrated memory and serial communication links, intended for parallel computing. They were designed and produced by Inmos, a semiconductor company based in Bristol, United Kingdom.
  For some time in the late 1980s, many considered the transputer to be the next great design for the future of computing. While Inmos and the transputer did not achieve this expectation, the transputer architecture was highly influential in provoking new ideas in computer architecture, several of which have re-emerged in different forms in modern systems.
context_section_description: At launch, the T414 was the 32-bit offering. Originally, the first 32-bit variant was to be the T424, but fabrication difficulties meant that this was redesigned as the T414 with 2 KB on-board RAM instead of the intended 4 KB. The T414 was available in 15 and 20 MHz varieties.
  The RAM was later reinstated to 4 KB on the T425 (in 20, 25, and 30 MHz varieties), which also added the J 0 breakpoint support and extra T800 instructions. The T400, released in September 1989, was a low-cost 20 MHz T425 derivative with 2 KB and two instead of four links, intended for the embedded systems market.
caption: Inmos T425 die
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