Intel 8089
{{Short description|An Intel input/output coprocessor for the 8086/8088 central processors}}
The Intel 8089 input/output coprocessor was available for use with the 8086/8088 central processor. It was announced in May 1979, but the price was not available at that time.Intel Corporation, "Microcomputer Components: Intel Introduces the 8089 IOP, an I/O processor for the advanced 8088/8086 CPU family, the first of a series of new subsystem components", Intel Preview, May/June 1979, p. 7. It used the same programming technique as 8087 for input/output operations, such as transfer of data from memory to a peripheral device, and so reducing the load on the CPU. This I/O processor was available in July 1979 for US$194.20 in quantities of 100 or more.Intel Corporation, "8089 Price Announcement", Intel Preview, July/August 1979, p. 25. Intel second sourced this coprocessor to Fujitsu Limited.Intel Corporation, "NewsBits: Second Source News", Solutions, January/February 1985, P. 1
Because IBM didn't use it in the IBM PC design, it did not become well known; later Intel I/O coprocessors did not keep the x89 designation the way math coprocessors kept the x87 designation. It was used in the Apricot PC and the Intel Multibus iSBC-215 Hard disk drive controller.{{cite web|url=http://bitsavers.trailing-edge.com/pdf/intel/iSBC/144780-002_iSBC_215_Generic_Winchester_Disk_Controller_Hardware_Reference_Manual_Dec84.pdf|access-date=30 April 2023|website=Intel|title=Hardware manual}} It was also used in the Altos 586 multi-user computer.{{cite book |title=Review: Altos 586 |url=https://books.google.com/books?id=0C8EAAAAMBAJ&pg=PA89 |date=7 November 1983 |publisher=InfoWorld |pages=89–90 |issn=0199-6649}} Intel themselves used the 8089 in their reference designs (which they also commercialized) as System 86.{{cite web |url=http://bitsavers.informatik.uni-stuttgart.de/pdf/intel/system3xx/172758-001_Introduction_to_the_System_86_330_and_380_Systems_Mar83.pdf |title=Introduction to the System 86/360 and System 86/330A Microcomputer Systems |author= |date=1983 |website=bitsavers |publisher=Intel |access-date=November 30, 2022}}
Peripherals
- Intel 8282/8283: 8-bit latch
- Intel 8284: clock generator
- Intel 8286 / 8287 were 8-bit data bus transceivers. Both Intel I8286 and I8287(inverting version) were available for US$16.25 in quantities of 100.{{cite periodical |title=8086 Available for industrial environment |periodical=Intel Preview Special Issue: 16-Bit Solutions |publisher=Intel Corporation |date=May–June 1980 |page=29 }}
- Intel 8288: bus controller
- Intel 8289: bus arbiter
Literature and datasheets
- [http://bitsavers.org/pdf/intel/ISIS_II/9800938-01_8089_Assembler_Users_Guide_Aug79.pdf 8089 Assembler Users Guide]; Intel 1979
- [http://www.datasheetcatalog.org/datasheets/1150/489358_DS.pdf 8089 8 & 16-Bit HMOS I/O Processor]; Intel 1980
- John Atwood, Dave Ferguson: [http://www.nj7p.info/Manuals/PDFs/Intel/AP-50.pdf Debugging Strategies And Considerations For 8089 Systems] {{Webarchive|url=https://web.archive.org/web/20210829002525/http://www.nj7p.info/Manuals/PDFs/Intel/AP-50.pdf |date=2021-08-29 }}, Application Note (AP-50), September 1979, Intel Corporation.
- Jim Nadir: [http://www.nj7p.info/Manuals/PDFs/Intel/AP-51.pdf Designing 8086, 8088, 8089 Multiprocessing System With The 8289 Bus Arbiter] {{Webarchive|url=https://web.archive.org/web/20210829002525/http://www.nj7p.info/Manuals/PDFs/Intel/AP-51.pdf |date=2021-08-29 }}, Application Note (AP-51), März 1979, Intel Corporation.
- Robin Jigour: Prototyping with the 8089 I/O Processor, Application Note (AP-89), Mai 1980, Order number AFN 01153A, Intel Corporation.
- Hard Disk Controller Design Using the 8089, Application Note (AP-122), Order number 210202-001, Intel Corporation.
- Graphic CRT Design Using the Intel 8089, Application Note (AP-123), Intel Corporation.
References
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{{Commons category|Intel 8089}}
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