Walrus

Convert 2bytes to 4bytes - BitShift problem

9 posts in this topic

#1 ·  Posted (edited)

Hi, I'm having a one question

Is there a way to conver 2bytes data to 4bytes data?

I'm using BitShift($data, -16)

And for example for number 98 (in 2 bytes)

BitShift(98, -16) it gives 6422528, but it should give 6422676.

What i'm doing wrong? Thank you for your help!

Walrus.

Edited by Walrus

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I beg to differ:

ConsoleWrite(Hex(148) & ' ' & Hex(BitShift(148, -16)) & ' ' & BitShift(148, -16) & @LF)

This wonderful site allows debugging and testing regular expressions (many flavors available). An absolute must have in your bookmarks.
Another excellent RegExp tutorial. Don't forget downloading your copy of up-to-date pcretest.exe and pcregrep.exe here
RegExp tutorial: enough to get started
PCRE v8.33 regexp documentation latest available release and currently implemented in AutoIt beta.

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#3 ·  Posted (edited)

Sorry, mistake with copy

i mean number 98.

BitShift(98, -16)

Edited by Walrus

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But what makes you believe the result is incorrect?

ConsoleWrite(Hex(98) & ' ' & Hex(BitShift(98, -16)) & ' ' & BitShift(98, -16) & ' ' & 98 * 256 * 256 & @LF)

This wonderful site allows debugging and testing regular expressions (many flavors available). An absolute must have in your bookmarks.
Another excellent RegExp tutorial. Don't forget downloading your copy of up-to-date pcretest.exe and pcregrep.exe here
RegExp tutorial: enough to get started
PCRE v8.33 regexp documentation latest available release and currently implemented in AutoIt beta.

SQLitespeed is another feature-rich premier SQLite manager (includes import/export). Well worth a try.
SQLite Expert (freeware Personal Edition or payware Pro version) is a very useful SQLite database manager.
An excellent eBook covering almost every aspect of SQLite3: a must-read for anyone doing serious work.
SQL tutorial (covers "generic" SQL, but most of it applies to SQLite as well)
A work-in-progress SQLite3 tutorial. Don't miss other LxyzTHW pages!
SQLite official website with full documentation (may be newer than the SQLite library that comes standard with AutoIt)

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Cheat Engine (i'm using it only to get pointer for NoMadMemory UDF, but it having convert option)

Anyway BitShit(x, 16) isn't working correctly too, BitShift(6029479, 16) is giving 92, but in my (and CE) opinion, it should give 167.

Btw, is there a other way to check it? Is there a "moving bytes" calculator? I can't find it in google :/

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Walrus,

Unsurprisingly, I get the same results as jchd for all of his tests. And as for your assertion that BitShift(x, 16) does not work either:

ConsoleWrite(Hex(6029479) & ' ' & Hex(BitShift(6029479, 16)) & ' ' & BitShift(6029479, 16) & ' ' & (5 * 16) + 12 & @LF)
I get:

005C00A7 0000005C 92 92
which looks pretty good to me.

I think you are doing something wrong with the CheatEngine "convert option". What exactly are you trying to manipulate?

M23


Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind._______My UDFs:

Spoiler

ArrayMultiColSort ---- Sort arrays on multiple columns
ChooseFileFolder ---- Single and multiple selections from specified path treeview listing
Date_Time_Convert -- Easily convert date/time formats, including the language used
ExtMsgBox --------- A highly customisable replacement for MsgBox
GUIExtender -------- Extend and retract multiple sections within a GUI
GUIFrame ---------- Subdivide GUIs into many adjustable frames
GUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView items
GUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeView
Marquee ----------- Scrolling tickertape GUIs
NoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxes
Notify ------------- Small notifications on the edge of the display
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If you are having Cheat Engine you can check it. I aren't trying to manipulate. I'm just having value from memory read in 4bytes, but i want convert it to 2bytes.

You can open single process, for example firefox, word, sciete, it dosen't matter, just find value in 4bytes, then change it to 6029479 and then change the adress type to 2bytes, you will get 167. (it is the convert option) I really don't know why :(

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Walrus,

If CheatEngine returns 167 then it is simply removing the top word:

ConsoleWrite(Hex(6029479) & ' ' & Hex(BitAND(6029479, 0x0000FFFF)) & ' ' & (10 * 16) + 7 & @LF)
which gives:

005C00A7 000000A7 167
So it seems that you misunderstand the "convert option" and there is no problem with AutoIt at all.

And my question was actually: Why are you using CheatEngine?

M23

1 person likes this

Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind._______My UDFs:

Spoiler

ArrayMultiColSort ---- Sort arrays on multiple columns
ChooseFileFolder ---- Single and multiple selections from specified path treeview listing
Date_Time_Convert -- Easily convert date/time formats, including the language used
ExtMsgBox --------- A highly customisable replacement for MsgBox
GUIExtender -------- Extend and retract multiple sections within a GUI
GUIFrame ---------- Subdivide GUIs into many adjustable frames
GUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView items
GUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeView
Marquee ----------- Scrolling tickertape GUIs
NoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxes
Notify ------------- Small notifications on the edge of the display
Scrollbars ----------Automatically sized scrollbars with a single command
StringSize ---------- Automatically size controls to fit text
Toast -------------- Small GUIs which pop out of the notification area

 

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Cheat Engine (i'm using it only to get pointer for NoMadMemory UDF, but it having convert option)

 

As i said.

Thank you for answer, i will test it.

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