Why this operation is not possible ?

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system error

Joined: 01 Sep 2013
Posts: 670

system error 05 Sep 2017, 22:59

Furs wrote:

You obviously haven't or just copy pasted it, and I have a fairly good idea myself based on your behavior But considering you don't even know what opcode space/map is, it's hilarious. And yes it was officially the reason Intel gave when designing the x87 (very long ago).

Heck, even wikipedia says it: https://en.wikipedia.org/wiki/X86#Floating_point_unit
Wikipedia wrote:
Each x87 register, known as ST(0) through ST(7), is 80 bits wide and stores numbers in the IEEE floating-point standard double extended precision format. These registers are organized as a stack with ST(0) as the top. This was done in order to conserve opcode space, and the registers are therefore randomly accessible only for either operand in a register-to-register instruction; ST0 must always be one of the two operands, either the source or the destination, regardless of whether the other operand is ST(x) or a memory operand. However, random access to the stack registers can be obtained through an instruction which exchanges any specified ST(x) with ST(0)

My keyboard can edit a Wikipedia while I am asleep and treat itself like an important expert too! NOOOO! Wikipedia is not the official INTEL/AMD Manuals dumbass! hahahaha xD

Since you have the BIGGEST MOUTH talking about opcode and prefix to innocent and naive beginners, now I am re-phrasing my challenge in your INCOMPETENT FACE, in front of everybody here:

DO YOU REALLY WANT TO TALK DETAILS ABOUT INSTRUCTION PREFIX and INSTRUCTION LENGTH that much to prove your "expertise"?

C'mon "Master-of-Instruction-Prefixes", say you game! xD

05 Sep 2017, 22:59

Furs

Joined: 04 Mar 2016
Posts: 2505

Furs 06 Sep 2017, 11:15

The internet taught me, it's always the losers who discredit wikipedia, the ignorant people who have all their arguments crushed, and they know it. Go edit it then and see what happens. You might be surprised but unlike your technobabble, wikipedia has references.

I don't give a shit how much you technobabble. The fact is, opcode space is a synonym for opcode map and both are equally valid. Now, since you clearly didn't know this and still continue to be ignorant, then obviously you're just a script kiddie who copy pastes others' work (if even that, you've yet to show any proof for your claims anyway). Stop wasting people's time.

06 Sep 2017, 11:15

system error

Joined: 01 Sep 2013
Posts: 670

system error 06 Sep 2017, 23:18

So I understand that you accepted my challenge then. Let's have a roleplay here.

Say I am a beginner. And I saw you BIG-MOUTHING about opcodes, space, encoding THAT MUCH to me. So my opinion, YOU ARE AN EXPERT ON ALL OF THOSE STUFF that came out of your BIG MOUTH.

Now Master of Encoding, if my Mod field is 0 and my Base field is 3, how many bytes that does this setting commit towards the whole encoding/instruction length, regardless of opcode. Remember I am a beginner here asking about OPCODE and ENCODING (two things you been MENTIONING to me right from the beginning). I want to know how many bytes and WHY

I am giving you TWO days to solve the puzzle, the DISASSEMBLER's way. TWO days. Normally for an expert, it takes less than a minute to figure that out. TWO DAYS is for BIG MOUTH expert-wannabe. xD

06 Sep 2017, 23:18

Furs

Joined: 04 Mar 2016
Posts: 2505

Furs 07 Sep 2017, 12:28

I don't give a shit about your opinion, I made it clear about 3 times already. Stop talking in his name already. What I do care about is you asking "what is opcode space?" so keep embarrassing yourself.

07 Sep 2017, 12:28

system error

Joined: 01 Sep 2013
Posts: 670

system error 07 Sep 2017, 18:46

Furs wrote:

I don't give a shit about your opinion,

You do. That's why you're re-quoting my every posts. And just so with THIS post. Your face-saving lie is DEBUNKED.

Quote:

Stop talking in his name already.

Ok then. The technical question straight from me to your INCOMPETENT FACE

Quote:

Now Master of Encoding, if my Mod field is 0 and my Base field is 3, how many bytes that does this setting commit towards the whole encoding/instruction length, regardless of opcode - two things you been BOASTING to me right from the beginning. I want to know how many bytes and WHY

Remember, you have 24-hour more of DIGGING your trash bins to come up with the correct answers.

Quote:

What I do care about is you asking "what is opcode space?" so keep embarrassing yourself.

My reference is Intel/AMD manual. No such technical thing as "opcode space". You're bringing references OTHER than the official documentation. Now everybody is laughing at your INCOMPETENT FACE.

So, since you're no longer interested my opinion, I took it that you're no longer quoting my posts. So I'll leave the challenge here standing for everybody to see how I b1tchslapped your "expert" face over and over.

Thanks for the entertainment, Mr "opcode space" expert! xD

07 Sep 2017, 18:46

Furs

Joined: 04 Mar 2016
Posts: 2505

Furs 07 Sep 2017, 22:25

I'm quoting your posts? I think it's just you.

I told you already that "opcode space" is synonym for "opcode map", and gave you links for it. Not my fault you can't read or understand English.

And opcode map is an entire section in Intel manual, wtf you smoking?

07 Sep 2017, 22:25

system error

Joined: 01 Sep 2013
Posts: 670

system error 08 Sep 2017, 00:30

Edit by revolution: Trolling removed

08 Sep 2017, 00:30

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