Gas pedals
Computer architecture : CPU and coprocessors/accelerators
Article REF: H1015 V1
Gas pedals
Computer architecture : CPU and coprocessors/accelerators

Author : Daniel ETIEMBLE

Publication date: May 10, 2025 | Lire en français

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2. Gas pedals

In the remainder of this text, we'll use the terms coprocessor or gas pedal interchangeably. Co-processors have always been designed to reduce program execution times. There are four main types of co-processor.

2.1 Math and I/O coprocessors

Mainframes of the 1960s featured specialized coprocessors for input/output (I/O). The IBM-365 (1965) had "channel processors" for both slow and fast peripherals. The CDC 6600 (1964) had 10 peripheral I/O processors (figure 1 ). The peripheral processors used the fine-grained multithreading principle

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