add tmg to src/cmd and image

add doug user to image, put tmg sources there
fix an as7 bug found by tmg

src/cmd/t8.s

@@ -0,0 +1,58 @@
+"** 13-120-147.pdf page 28
+" op.s is the op code defination file
+" for the assembler
+" no iot ops are defined
+" system cal entries are defined
+"
+dac = 0040000
+jms = 0100000
+dzm = 0140000
+lac = 0200000
+xor = 0240000
+add = 0300000
+tad = 0340000
+xct = 0400000
+isz = 0440000
+and = 0500000
+sad = 0540000
+jmp = 0600000
+eae = 0640000
+i = 020000
+opr = 0740000
+law = opr i
+cma = opr 1
+cml = opr 2
+ral = opr 010
+rar = opr 020
+sma = opr 0100
+sza = opr 0200
+snl = opr 0400
+skp = opr 01000
+spa = opr 01100
+sna = opr 01200
+szl = opr 01400
+cll = opr 04000
+cla = opr 010000
+las = opr 010004
+lrs = eae 0500
+lrss = i lrs
+lls = eae 0600
+llss = i lls
+als = eae 0700
+alss = i als
+lacq = eae 01002
+lacs = eae 01001
+clq = eae 010000
+omq = eae 2
+cmq = eae 4
+lmq = eae 012000
+
+sys = i
+save = 1
+open = 3
+read = 4
+write = 5
+creat = 6
+seek = 7
+close = 9
+exit = 14