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; noise.asm -- just fooling around :-) ; mct and leif, ; Sun Feb 19 19:08:13 PST 2012 ; ; Build with: ; ; nasm -felf32 noise.asm ; ld -melf_i386 -o noise noise.o ; ; Run with: ; ; ./noise | aplay
global _start
section .data
section .bss
var: resb 1 ; one bye variable
section .text
; f(x) = (x >> 10 ^ x>>((x>>13)%4)) % 256
_start: mov esi, 0
;int 3
.loop:
mov edi, esi shr edi, 13 ; edi := x >> 13
mov eax, edi cwd mov bx, 4 div bx ; dx := (x >> 13) % 4
mov eax, esi mov cx, dx shr eax, cl ; eax := x >> ((x >> 13) % 4)
mov edi, esi shr edi, 10 ; edi := x >> 10
xor eax, edi mov [var], al
mov eax, 4 ; sys_write mov ebx, 1 ; stdout mov ecx, var ; buffer mov edx, 1 ; length int 80h ; syscall
inc esi jmp .loop