Add original unix v6

source/s3/fpx.s

@@ -0,0 +1,34 @@
+/ fpx -- floating point simulation
+
+.data
+reenter: 1
+
+.bss
+asign:	.=.+2
+areg:	.=.+8
+aexp:	.=.+2
+bsign:	.=.+2
+breg:	.=.+8
+bexp:	.=.+2
+
+fpsr:	.=.+2
+trapins: .=.+2
+
+ac0:	.=.+8.
+ac1:	.=.+8.
+ac2:	.=.+8.
+ac3:	.=.+8.
+ac4:	.=.+8.
+ac5:	.=.+8.
+
+sr0:	.=.+2
+sr1:	.=.+2
+	.=.+2
+	.=.+2
+	.=.+2
+	.=.+2
+ssp:	.=.+2
+spc:	.=.+2
+sps:	.=.+2
+pctmp:	.=.+8
+