Intel 8289

The Intel 8289 is a Bus arbiter designed for Intel 8086/8087/8088/8089. The chip is supplied in 20-pin DIP package. The 8086 (and 8088) operate in maximum mode, so they are configured primarily for multiprocessor operation or for working with coprocessors. Necessary control signals are generated by the 8289. This version was available for US$44.80 in quantities of 100.^[1]

• Bus-Arbiter
• Jim Nadir: Designing 8086, 8088, 8089 Multiprocessing System With The 8289 Bus Arbiter Archived 2021-08-29 at the Wayback Machine, Application Note (AP-51), März 1979, Intel Corporation.

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