This is from the
ASM Community - ASM Book -XBOX NASM , I take no credit for it.
CODE
%include "kernel.inc"
%include "xbe.inc"
IMPORT KeTickCount
IMPORT HalReturnToFirmware
;##### XBOX Program Entry Point #####
XBE_START
;#### Paint the Screen ####
mov ebx,VIDEO_MEMORY
mov ecx,VIDEO_LIMIT
fill:
mov BYTE[ebx+1],0xFF
add ebx,4
cmp ebx,ecx
jl fill
;#### Small Wait Loop (5 seconds) ####
mov ebx,DWORD[KeTickCount]
mov ecx,DWORD[ebx]
add ecx,5000
.wait_loop:
cmp DWORD[ebx],ecx
jl .wait_loop
;#### Return to Dashboard ####
push DWORD 0x02
call [HalReturnToFirmware]
jmp $
;##### End of XBOX Program #####
XBE_END
The two .inc files can be found at the website and exports the xbox kernel's API like NtOpenFile and HalWriteSMBusValue and also the XBE header etc. So you can do XDK-free programming with NASM which is freely available.
