Hello, I'm new in ASM.
A friend recommended me MASM and JWasm with GoLinker.
I use Windows 7 64 bits.
I made correctly the Win64_2.asm from JWasm\Samples, but I started learning with a tutorial and it teaches but for 32 bits.
My code is:
.MODEL SMALL
.CODE
Mycode:
MOV AX,@DATA
MOV DS,AX
MOV DX,Offset Texto
MOV AH,4C00H
INT 21H
.DATA
Texto DB "yehehe$"
.STACK
END Mycode
What do I have to change for 64 bits?
Thanks!
PD: Sorry by my english, I'm from spain ::)
PD2: I think is because the bits, the error was:
Quoteyehe.asm(7) : Error A2050: Operands must be the same size: 1 - 2
yehe.asm: 12 lines, 1 passes, 15 ms, 0 warnings, 1 errors
your code is 16Bit DOS code.
My suggestion is to start with 32Bit Assembler using masm32 package - it's an all in one solution and there is a lot of code available. As long as you have programming skills with some other programming language (e.g. c/c++) it shouldn't be a problem to step in.
qWord
qWord is right
but the error is here
MOV AH,4C00H
you are trying to MOV a word value into a byte register
replace that line with
MOV AX,4C00H
also - if you want to see the results...
MOV DX,Offset Texto
MOV AH,9
INT 21H
MOV AX,4C00H
INT 21H
Quote from: qWord on January 31, 2011, 02:59:47 PM
your code is 16Bit DOS code.
My suggestion is to start with 32Bit Assembler using masm32 package - it's an all in one solution and there is a lot of code available. As long as you have programming skills with some other programming language (e.g. c/c++) it shouldn't be a problem to step in.
qWord
I program in C/C++, Perl, Python, PHP, Bash/Batch.. but I would like try something new, and ASM can teach me a lot of things.
My friend recommended me JWasm because MASM32 isn't free, and GoLink because he wasn't sure that the Jwasm's linker runs in x86.
Quote from: dedndave on January 31, 2011, 03:16:30 PM
but the error is here
MOV AH,4C00H
you are trying to MOV a word value into a byte register
replace that line with
MOV AX,4C00H
I changed that, and runs like 32 bits:
jwasm code.asmIt makes code.obj, but I do:
GoLink code.objand the output is:
Error!
A source file is in OMF format which is not supported (code.obj)
Output file not made
I try like 64 bits:
jwasm -win64 code.asmand..
code.asm(1) : Warning A4097: Multiple .MODEL directives, .MODEL ignored
code.asm(6) : Error A2050: Operands must be the same size: 2 - 8
code.asm: 12 lines, 2 passes, 0 ms, 1 warnings, 1 errors
And another doubt, over x64 I'll can run 32 bits codes correctly with the sofware I have?
Thanks!
build this as console app:
option casemap:none
option frame:auto ; see documentation
includelib kernel32.lib
includelib msvcrt.lib
;UNICODE EQU 1 ; lets use unicode
_WIN64 EQU 1
include Windows.inc ; japheth's wininc - http://www.japheth.de/
;/* define some CRT functions */
printf proto :ptr BYTE,:VARARG
_getch proto
.code
main proc
.data
sz db "Hello World",0
.code
invoke printf,ADDR sz
invoke _getch
invoke ExitProcess,0
main endp
end main
Arg, error again, I need Windows.inc
install the masm32 package
masm is free, but you can't use it to write code for non-windows OS's
JwAsm is unrestricted - you may use it however you like
but - masm is still a good place to get your feet wet
Quote from: qWord on February 01, 2011, 12:42:21 AM
Quote from: xassiz on January 31, 2011, 09:53:05 PM
Arg, error again, I need Windows.inc
Quote from: qWord on January 31, 2011, 08:08:28 PM
; japheth's wininc - http://www.japheth.de/
Yeah, I downloaded it but I can't install the libraries....
I'll try with MASM32
you must download and install the windows SDK - it contains the needed libraries. MASM32 supplies only 32Bit libraries, that wont work for 64Bit.
Quote from: qWord on February 01, 2011, 02:50:57 PM
you must download and install the windows SDK - it contains the needed libraries. MASM32 supplies only 32Bit libraries, that wont work for 64Bit.
Ok thanks, I have just downloaded the windows SDK libraries.. but now, how can I assemble?
Quotetest.asm(9) : Error A2089: Cannot open include file 'Windows.inc'
test.asm(25) : Error A2161: INVOKE requires prototype for procedure
test.asm: 28 lines, 1 passes, 0 ms, 0 warnings, 2 errors
Quote from: xassiz on February 01, 2011, 04:17:45 PM
Ok thanks, I have just downloaded the windows SDK libraries.. but now, how can I assemble?
The fact that you tried to assemble 16-bit DOS code as a 64-bit Windows application tells me that you are not ready to play with 64-bit assembly.
The best hint I can give is: try 32-bit Windows first - and read the docs!
Quote from: japheth on February 01, 2011, 04:37:22 PM
Quote from: xassiz on February 01, 2011, 04:17:45 PM
Ok thanks, I have just downloaded the windows SDK libraries.. but now, how can I assemble?
The best hint I can give is: try 32-bit Windows first - and read the docs!
You say that I program for 32-bit or over 32-bit windows?
Quote from: xassiz on January 31, 2011, 05:25:22 PMI program in C/C++
how long are you programming? - your previous posts let me assume, that you are an greenhorn ... in this case assembler it is not a good choice.
Quote from: qWord on February 01, 2011, 06:02:27 PM
Quote from: xassiz on January 31, 2011, 05:25:22 PMI program in C/C++
how long are you programming? - your previous posts let me assume, that you are an greenhorn ... in this case assembler it is not a good choice.
2 years in C >.<
I want ASM, I'm a "greenhorn" in ASM :dazzled:
in the upper-right corner of the forum, there are a few links
poke around in there - there are several good sources for documentation
you will also find the masm32 sdk package download
download and install that - it is a good place to start
you will find tutorials, examples, help files, and pre-written libraries and macros for 32-bit code
if you want to learn 64-bit, you really need to learn 32-bit first
Problem solved, I finally installed MASM32, you can close the post.