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/t1.s

@@ -0,0 +1,69 @@
+"** 13-120-147.pdf page 5
+t=0
+main:
+  lac 017777 i
+  sad d4
+  jmp 2f
+  sad d8
+  jmp 1f
+  law 9
+  tad 017777
+  dac 0f
+  law 017
+  sys creat;0:0
+  dac output
+1:law 5
+  tad 017777
+  dac 0f
+  sys open;0:0;0
+  dac input
+  spa
+  sys exit
+2:
+  jms advance; jmp 1f
+  jmp rinterp
+
+0:lac 2f
+  jms obuild
+1:lac owrite
+  spa
+  jmp 0b
+  jms oflush
+  las
+  spa
+  sys exit
+  sys save
+2:o777
+
+
+"special machine language code
+
+"puts out and octal strin g from symtab entry
+
+symoct:
+  lac equ
+  add equbot
+  dac 9f+t
+  lac 1f
+  jms twoktab; lac 9f+t i
+1:gf  .+1 x
+  lac ii
+  dac 8
+  lac 8 i
+  add symbot
+  dac 9f+t
+
+2:lac 9f+t i
+  jms putoct
+  lac onenl
+  jms obuild
+  lac 9f+t i
+  and o600600
+  sza    "skip unless word contained eof (0777)
+  jmp ggoon
+  
+"** 13-120-147.pdf page 6
+  isz 9f+t
+  jmp 2b
+t=t+1
+o600600:0600600