/ error	= chdir(dirname);
/	  char *dirname;

.globl	_chdir
.globl	cerror

_chdir:
	mov	r5,-(sp)
	mov	sp,r5
	mov	4(r5),0f
	sys	0; 9f
	bec	1f
	jmp	cerror
1:
	clr	r0
	mov	(sp)+,r5
	rts	pc
.data
9:
	sys	chdir; 0:..