25 lines
		
	
	
	
		
			306 B
		
	
	
	
		
			ArmAsm
		
	
	
	
	
	
			
		
		
	
	
			25 lines
		
	
	
	
		
			306 B
		
	
	
	
		
			ArmAsm
		
	
	
	
	
	
#
 | 
						|
! $Source$
 | 
						|
! $State$
 | 
						|
! $Revision$
 | 
						|
 | 
						|
! Declare segments (the order is important).
 | 
						|
 | 
						|
.sect .text
 | 
						|
.sect .rom
 | 
						|
.sect .data
 | 
						|
.sect .bss
 | 
						|
 | 
						|
.sect .text
 | 
						|
 | 
						|
! Say whether a file exists with the given name.
 | 
						|
 | 
						|
.define __sys_exists
 | 
						|
__sys_exists:
 | 
						|
	mov bx, sp
 | 
						|
	mov dx, 2(bx)
 | 
						|
	mov ax, 0x4300
 | 
						|
	int 0x21
 | 
						|
	sbb ax, ax
 | 
						|
	inc ax
 | 
						|
	ret
 |