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 +1,89 @@
+#
+/*
+ */
+
+/*
+ * DN-11 ACU interface
+ */
+
+#include "../param.h"
+#include "../conf.h"
+#include "../user.h"
+
+struct dn {
+	struct {
+		char	dn_stat;
+		char	dn_reg;
+	} dn11[3];
+}
+
+#define	DNADDR	0175200
+
+#define	PWI	00200
+#define	ACR	00100
+#define	DLO	0020
+#define	DONE	0200
+#define	IENABLE	0100
+#define	DSS	040
+#define	PND	020
+#define	MENABLE	04
+#define	DPR	02
+#define	CRQ	01
+
+#define	DNPRI	5
+
+dnopen(dev, flag)
+{
+	register struct dn *dp;
+	register int rdev;
+
+	rdev = dev.d_minor;
+	dp = &DNADDR->dn11[rdev];
+	if (dp->dn_reg&(PWI|DLO))
+		u.u_error = ENXIO;
+	else {
+		DNADDR->dn11[0].dn_stat =| MENABLE;
+		dp->dn_stat = IENABLE|MENABLE|CRQ;
+	}
+}
+
+dnclose(dev)
+{
+	DNADDR->dn11[dev.d_minor].dn_stat =& MENABLE;
+}
+
+dnwrite(dev)
+{
+	register struct dn *dp;
+	register c;
+	extern lbolt;
+
+	dp = &DNADDR->dn11[dev.d_minor];
+	for(;;) {
+		while ((dp->dn_stat&DONE)==0)
+			sleep(DNADDR, DNPRI);
+		dp->dn_stat =& ~DONE;
+	    contin:
+		if (dp->dn_reg&(PWI|ACR)) {
+			u.u_error = EIO;
+			return;
+		}
+		if (dp->dn_stat&DSS)
+			return;
+		c = 0;
+		if (u.u_count==0 || (dp->dn_stat&PND)==0 || (c=cpass())<0)
+			continue;
+		if (c=='-') {
+			sleep(&lbolt, DNPRI);
+			sleep(&lbolt, DNPRI);
+			goto contin;
+		}
+		dp->dn_reg = c-'0';
+		dp->dn_stat =| DPR;
+	}
+}
+
+dnint(dev)
+{
+	wakeup(DNADDR);
+}