Add original unix v6

2018-01-27 22:35:41 +09:00
commit 2c7099ee50
664 changed files with 106254 additions and 0 deletions
@@ -0,0 +1,21 @@
+.globl	zero
+.globl	putchar
+.globl	w, r, a, l
+/
+/
+/	routine to zero a string
+/
+/	mov	...,r1
+/	jsr	pc,zero
+/
+zero:
+	mov	r0,-(sp)
+	mov	a(r1),w(r1)
+	clrb	r0
+1:	cmp	w(r1),l(r1)
+	bhis	1f
+	jsr	pc,putchar
+	br	1b
+1:	mov	a(r1),w(r1)
+	mov	(sp)+,r0
+	rts	pc