C:\Asm\FASM\EXAMPLES\WIN64\my_example>type console_test.asm
format MS64 coff

extrn GetStdHandle
extrn 'WriteConsoleA' as WriteConsole
extrn ExitProcess
extrn WriteConsoleW
;extrn SetConsoleDisplayMode
;extrn SetCurrentConsoleFontEx

STD_INPUT_HANDLE = -10
STD_OUTPUT_HANDLE = -11
STD_ERROR_HANDLE = -12
CONSOLE_FULLSCREEN_MODE = 1
CONSOLE_WINDOWED_MODE = 2

section 'CODE' code readable executable align 16
align 16
public MAIN
MAIN:
   sub rsp, 40
   mov ecx, STD_OUTPUT_HANDLE
   call GetStdHandle
   mov [stdin], rax
;   mov r8, coord
;   mov edx, CONSOLE_FULLSCREEN_MODE
;   mov rcx, [stdin]
;   call SetConsoleDisplayMode
   xor eax, eax
   mov [rsp+32], rax
   mov r9, NumCharsWritten
   mov r8d, hello_len
   mov rdx, hello
   mov rcx, [stdin]
   call WriteConsole
   xor eax, eax
   mov [rsp+32], rax
   mov r9, NumCharsWritten
   mov r8d, ru_len
   mov rdx, ru
   mov rcx, [stdin]
   call WriteConsoleW
   xor ecx, ecx
   call ExitProcess
   add rsp, 40
   ret

section 'DATA' data readable writeable align 16
   stdin dq ?
   NumCharsWritten dw ?
   hello db 'Hello, world!', 13, 10
   hello_len = $-hello
   ru dw 417h, 434h, 440h, 430h, 432h, 441h
      dw 442h, 432h, 443h, 439h,  2ch,  20h
      dw 43ch, 438h, 440h, 21h, 13, 10
   ru_len = ($-ru)/2
   align 4
   coord dd 2 dup (?)

C:\Asm\FASM\EXAMPLES\WIN64\my_example>set path=C:\Asm\Fasm;C:\Program Files\Microsoft Platform SDK for Windows Server 2003 R2\Bin\win64\x86\AMD64

C:\Asm\FASM\EXAMPLES\WIN64\my_example>set lib=C:\Program Files\Microsoft Platform SDK for Windows Server 2003 R2\Lib\AMD64

C:\Asm\FASM\EXAMPLES\WIN64\my_example>fasm console_test.asm
flat assembler  version 1.67.14  (1296617 kilobytes memory)
3 passes, 588 bytes.

C:\Asm\FASM\EXAMPLES\WIN64\my_example>link console_test.obj /subsystem:console /defaultlib:kernel32.lib /entry:MAIN
Microsoft (R) Incremental Linker Version 8.00.40310.39
Copyright (C) Microsoft Corporation.  All rights reserved.


C:\Asm\FASM\EXAMPLES\WIN64\my_example>console_test
Hello, world!
4@02AB2C9, <8@!
    

XP 64 is 32bit compatible, so any 32bit program will run on it using the WOW64.

FASMW works fine on WIN XP 64, I've had no reason to use the commandline since I no longer live in the 1980s and GUIs<>devil

Fasm has issues on Vista64 when trying to run a program you compiled with FORMAT PE64 but there's no such problem on winXP 64.

dasyar: 16bit code is not supported in 64bit LONG mode - thus if a x86-64 OS wants to run 16bit applications, it would have to include an emulator. Just use the win32 console version instead

Azu: of course it can - if it fails to run a PE64, either fasm is outputting it incorrectly or (more likely) there's something wrong with the source code.

f0dder wrote:

dasyar: 16bit code is not supported in 64bit LONG mode - thus if a x86-64 OS wants to run 16bit applications, it would have to include an emulator. Just use the win32 console version instead

Azu: of course it can - if it fails to run a PE64, either fasm is outputting it incorrectly or (more likely) there's something wrong with the source code.

He said it's working fine on XP so there's nothing wrong with FASM or the source..

dasyar: 16bit code is not supported in 64bit LONG mode

Azu wrote:

f0dder wrote:

dasyar: 16bit code is not supported in 64bit LONG mode - thus if a x86-64 OS wants to run 16bit applications, it would have to include an emulator. Just use the win32 console version instead

Azu: of course it can - if it fails to run a PE64, either fasm is outputting it incorrectly or (more likely) there's something wrong with the source code.

He said it's working fine on XP so there's nothing wrong with FASM or the source..

Different versions of Windows have slightly different constraints - like, win2k requiring at least one import (ending up) importing from kernel32, Win9x variants (and iirc also Vista or Win7?) not supporting filealign<512, et cetera. So it could very easily be either fasm or the source file that isn't clean.

64bit Vista and Win7 definitely do support PE64 files - which is pretty duh

Well then those constraints should be public, so compilers can be made to work within them..