1; test source file for assembling to binary files
2; build with:
3;    yasm -f bin -o bintest.com bintest.asm
4
5; When run (as a DOS .COM file), this program should print
6;    hello, world
7; on two successive lines, then exit cleanly.
8
9; This file should test the following:
10; [1] Define a text-section symbol
11; [2] Define a data-section symbol
12; [3] Define a BSS-section symbol
13; [4] Define a NASM local label
14; [5] Reference a NASM local label
15; [6] Reference a text-section symbol in the text section
16; [7] Reference a data-section symbol in the text section
17; [8] Reference a BSS-section symbol in the text section
18; [9] Reference a text-section symbol in the data section
19; [10] Reference a data-section symbol in the data section
20; [11] Reference a BSS-section symbol in the data section
21
22[BITS 16]
23[ORG 0x100]
24
25[SECTION .text]
26
27	  jmp start		; [6]
28
29endX	  mov ax,0x4c00		; [1]
30	  int 0x21
31
32start	  mov byte [bss_sym],',' ; [1] [8]
33	  mov bx,[bssptr]	; [7]
34	  mov al,[bx]
35	  mov bx,[dataptr]	; [7]
36	  mov [bx],al
37	  mov cx,2
38.loop	  mov dx,datasym	; [1] [4] [7]
39	  mov ah,9
40	  push cx
41	  int 0x21
42	  pop cx
43	  loop .loop		; [5] [6]
44	  mov bx,[textptr]	; [7]
45	  jmp bx
46
47[SECTION .data]
48
49datasym	  db 'hello  world', 13, 10, '$' ; [2]
50bssptr	  dw bss_sym		; [2] [11]
51dataptr	  dw datasym+5		; [2] [10]
52textptr	  dw endX		; [2] [9]
53
54[SECTION .bss]
55
56bss_sym	  resb 1		; [3]
57