AMDAHL+470

[|Amdahl Corporation's] first machine, the Amdahl 470V/6 shipped in 1975, was a [|plug compatible] [|mainframe computer] designed by former [|IBM Fellow] and chief architect of IBM System/360 [|Gene Amdahl]. Competing with IBM in the mainframe market, it was a less expensive, more reliable and faster replacement for the System 370/168. By purchasing an Amdahl 470 and plug-compatible peripheral devices from third-party manufacturers, customers could now run S/360 and S/370 applications under [|VM] without buying actual IBM hardware. || toc =Technology= The Amdahl 470V/6 uses [|large scale integration] (LSI) semiconductor technology, [|bipolar emitter-coupled logic] (ECL) in the [|CPU], [|metal–oxide–semiconductor] (MOS) in main memory, and ultra high speed bipolar components for the cache memory.
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 * [[image:amdahl.470_v6.102626927.jpg link="http://www.computerhistory.org/chess/full_record.php?iid=stl-43330af270432"]] ||~ || **Amdahl 470**,
 * Amdahl 470V/6 system ||~ ||^ ||

=Processor= The 32-bit [|CPU] contains 16 general purpose [|registers], eight floating point registers, eight [|scratchpad] and control registers, and consists of four logical, independent units. The instruction unit implements an [|instruction pipeline] with fetch, decode, execute, memory and register access stages and coordinates with other units. The execution unit performs the arithmetic and logical instructions, the storage unit controls high-speed buffer and main memory requests, the channel unit I/O requests. The CPU archives 3.5 [|MIPS].

=Chess Programs=
 * Awit / Wita
 * Bobby
 * CHAOS
 * Chute
 * Duchess
 * L'Excentrique
 * Tech 3

=See also=
 * Amdahl 5860
 * IBM 370

=Publications=
 * [|Allan R. Emery], Michael T. Alexander (**1975**). //A Performance Comparison of the Amdahl 470V/6 and the IBM 370/168//. Computer Measurement Group, October 1975, San Francisco, California, [|pdf] » AMDAHL 470, IBM 370
 * Alexis J. Pittman (**1975**). //The Amdahl 470v/6: The Latest in Computer Technology//. Michigan Technic, Vol. XCIV, No. 2, November 1975

=External Links= > [|Amdahl Computers brochure] > [|Amdahl 470V/6 Computer - Multi-Chip Carrier] > [|Amdahl 470V/6 Computer - CPU]
 * [|Copycats & Competitors] from The Computer History Museum
 * [|Amdahl - Vintage Computer Chip Collectibles, Memorabilia & Jewelry]
 * [|Amdahl Corporation from Wikipedia]
 * [|Dr. Gene Amdahl with Amdahl 470V/6] from The Computer History Museum
 * [|Gene Amdahl from Wikipedia]
 * [|Amdahl's law from Wikipedia]
 * [|Amdahl 470 Systems - Summary] (pdf)
 * [|Amdahl 470 Systems (March 1980)] (pdf)
 * [|Amdahl 470 V6 für Oberpfaffenhofen], October 08, 1976, Computerwoche (German) » TR 440

=References= =What links here?= include page="Amdahl 470" component="backlinks" limit="60"
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