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 +1,43 @@
+tcdt = 177350
+tccm = 177342
+tread:
+	mov	$tcdt,r0
+	mov	$tccm,r1
+for:
+	mov	$3,(r1)			/ rbn for
+1:
+	tstb	(r1)
+	bge	1b
+	tst	(r1)
+	blt	rev
+	cmp	tapa,(r0)
+	beq	rd
+	bgt	for
+
+rev:
+	mov	$4003,(r1)		/ rbn bac
+1:
+	tstb	(r1)
+	bge	1b
+	tst	(r1)
+	blt	for
+	mov	(r0),r2
+	add	$5,r2
+	cmp	tapa,r2
+	blt	rev
+	br	for
+
+rd:
+	mov	ba,-(r0)			/ bus addr
+	mov	wc,-(r0)			/ wc
+	mov	$5,-(r0)			/ read
+1:
+	tstb	(r1)
+	bge	1b
+	tst	(r1)
+	blt	tread
+	rts	pc
+
+rew:
+	mov	$4003,tccm
+	rts	pc