Groups > comp.sys.ibm.pc.hardware.misc > #95

Re: Intel 8086

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From	Bob Eager <news0005@eager.cx>
Newsgroups	comp.sys.ibm.pc.hardware.misc
Subject	Re: Intel 8086
Date	22 Oct 2015 19:52:23 GMT
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On Thu, 22 Oct 2015 11:42:47 -0700, JT wrote:

> On Wednesday, October 21, 2015 at 6:24:41 PM UTC-4, Bob Eager wrote:
>> On Wed, 21 Oct 2015 11:33:34 -0700, JT wrote:
>> 
>> > Intel 8086 microprocessor was released in 1978. What device used the
>> > 8086 before 8086 was chosen for IBM PC 5150 in 1981 ?
>> 
>> The 8086 was not used for the IBM PC. It used the 8088 (same programmer
>> architecture, but different bus width and pipeline size).
> 
> You are right about 8088. I saw an AMD 8088 on the real IBM 5150
> motherboard. what device used 8088 before IBM???

I've had a look, and I don't know! It was an easy hardware upgrade from 
the 8080/8085 as the bus interface was similar (and the instruction set 
was designed to be very similar (well, a superset)),

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Intel 8086 JT <tseng4@gmail.com> - 2015-10-21 11:33 -0700
  Re: Intel 8086 Bob Eager <news0005@eager.cx> - 2015-10-21 22:24 +0000
    Re: Intel 8086 JT <tseng4@gmail.com> - 2015-10-22 11:42 -0700
      Re: Intel 8086 Bob Eager <news0005@eager.cx> - 2015-10-22 19:52 +0000

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