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What is uintptr_t data type
...than a pointer. This would be expected on segmented architectures like the 8086 (16 bits size_t, but 32 bits void*)
– MSalters
Dec 4 '09 at 9:08
3
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Are types like uint32, int32, uint64, int64 defined in any stdlib header?
... It was built to be able to perform 64-bit arithmetic, if only because the 8086 needed to be able to do 32-bit arithmetic.
– Michael Morris
Apr 8 '14 at 2:47
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Why aren't programs written in Assembly more often? [closed]
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I've written shedloads of assembler for the 6502, Z80, 6809 and 8086 chips. I stopped doing so as soon as C compilers became available for the platforms I was addressing, and immediately became at least 10x more productive. Most good programmers use the tools they use for rational reason...
clang: how to list supported target architectures?
...vailable features for this target:
16bit-mode - 16-bit mode (i8086).
32bit-mode - 32-bit mode (80386).
3dnow - Enable 3DNow! instructions.
3dnowa - Enable 3DNow! Athlon instructions.
64bit - Support 64-bit instructions.
64b...
A fast method to round a double to a 32-bit int explained
...hen doing a fist, then restoring the fp rounding mode.
Now on the original 8086/8087, this wasn't too bad, but on later processors that started to get super-scalar and out-of-order execution, altering the fp rounding mode generally seriales the CPU core and is quite expensive. So on a CPU like a Pe...
Isn't it silly that a tiny favicon requires yet another HTTP request? How can I put the favicon into
...imenting to see if a favicon could be created out of an emoji:
https://lean8086.com/articles/using-an-emoji-as-favicon-with-svg/
Linares' hunch was right.
Several months later (March 2020), Code Pirate Lea Verou realised the same thing:
https://twitter.com/leaverou/status/1241619866475474946
And fav...
How can I build a small operating system on an old desktop computer? [closed]
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I would start small and purchase an 8086 embedded development kit, and develop a multitasking OS on that. Once you have a kernel and are acquainted with working at the hardware level, you will be ready to do something more challenging.
Building even a VGA disp...
In Visual Studio C++, what are the memory allocation representations?
...egarding 0xCC and 0xCD in particular, these are relics from the Intel 8088/8086 processor instruction set back in the 1980s. 0xCC is a special case of the software interrupt opcode INT 0xCD. The special single-byte version 0xCC allows a program to generate interrupt 3.
Although software interrupt ...
Awk学习笔记 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...赋值给max。
$ awk '$1 + $2 < 100' test。如果第一和第二个域相加大于100，则打印这些行。
$ awk '$1 > 5 && $2 < 10' test,如果第一个域大于5，并且第二个域小于10，则打印这些行。
11. 范围模板
范围模板匹配从第一个模板的第一...
Why do x86-64 instructions on 32-bit registers zero the upper part of the full 64-bit register?
...sons that 16-bit instructions are avoided now. x86-64 inherited this from 8086 for 8-bit and 386 for 16-bit, and decided to have 8 and 16-bit registers work the same way in 64-bit mode as they do in 32-bit mode.
See also Why doesn't GCC use partial registers? for practical details of how writes ...