instruction-set

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How do you convert little Endian to big Endian with bitwise operations?

I get that you\'d want to do something like take the first four bits put them on a stack (reading from left to right) then do you just put them in a register and shift them x times to put them at the[详细]

2023-02-09 08:08 分类：问答
How to find the time value of operation to optimize new algorithm design?

My question is specific to iPhone, iPod, and iPad, since I am assuming that the architecture makes a big difference. I\'m hoping there is either a specification somewhere (for the various chips perhap[详细]

2023-02-03 07:26 分类：问答
Instructions per sec for Operating systems

I am new to Computer Architecture and Design. My question was a high level program Instruction set are executed in CPU one after another. Does it even involve Operating System instructions as overhead[详细]

2023-01-30 13:33 分类：问答
Which is the first CPU that Intel has added conditional move instructions to?

I remember having read a开发者_StackOverflow中文版bout it somewhere… Could anyone shed some light on this?According to Wiki, Pentium Pro. They are suprizingly old, and I wonder why do you still need[详细]

2023-01-30 12:59 分类：问答
Assembler mov issue

I have the next code: movax,@data movds,ax Why I can not write just like this? mov ds,@data All source: .MODEL small[详细]

2023-01-15 23:13 分类：问答
Where to get all versions of x86 aka IA32 Instruction Set Architecture manuals

I know about Intel 64 and IA-32 Architectures Software Developer\'s Manuals. I also know that these cover all the legacy & old processor ISAs.[详细]

2023-01-02 06:51 分类：问答
How is a relative JMP (x86) implemented in an Assembler?

While building my assembler for the x86 platform I encountered some problems with encoding the JMP instruction:[详细]

2022-12-29 19:12 分类：问答
x86 CMP Instruction Difference

Question What is the (non-trivial) difference between the following two x86 instructions? 39 /rCMP r/m32,r32Compare r32 with r/m32[详细]

2022-12-29 14:56 分类：问答
How many byes is each instruction compiled to in x86 assembly?

0x004012d0 <main+0>:push%ebp 0x004012d1 <main+1>:mov%esp,%ebp 0x004012d3 <main+3>:sub$0x28,%esp[详细]

2022-12-25 07:04 分类：问答
New instruction sets in CPU

Every new generation of CPU introduces some sets of new instructions, i.e. MMX, 3DNOW, SSE and so on.[详细]

2022-12-25 01:17 分类：问答