Questions tagged [x86]

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21
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2answers
5k views

The start of x86: Intel 8080 vs Intel 8086?

Why is it said that all modern Intel processors of the x86 family are said to descent from the Intel 8086 and not the Intel 8080? From the Wikipedia article on the Intel 8086, The 8086 gave rise to ...
24
votes
6answers
10k views

Can x86 processors run 8-bit applications?

I was wondering if it is possible to run 8-bit applications within QEMU. I know that the x86 architecture can run 16-bit applications, but can it also run 8-bit applications?
16
votes
5answers
4k views

What was the first multiprocessor x86 motherboard?

I know dual socket motherboards were around in the 90's before Intel released the Core series. And SMP hardware and operating systems have been around earlier than the PC platform of course. ...
4
votes
1answer
312 views

What was the first publication documenting AT&T syntax assembly language?

What was the first publication to document what is (now) known as AT&T syntax assembly language?
13
votes
3answers
923 views

x86 as a Pascal Machine?

From this answer by gsg about the usage of certain x86 instructions: Note that the x86 was originally designed as a Pascal machine, which is why there are instructions to support nested functions (...
7
votes
1answer
1k views

How do you put a 286 in Protected Mode?

From the Art of Intel x86 Assembly, Page 149, The 80386 added four control registers: CR0-CR3. These registers extend the msw registers of the 80286 [...] The book says earlier that, The 80286 ...