/part 20
/test sal, sil, sar, sir, scl, scr

0/

	20	/program number
stt,	szs 10	/if sw1 up,
	hlt	/halt after read-in

/begin tests

	lac tst	/load ac and io
	lio tst	/with 377777

	sal 9s	/move ac left
	sal 8s	/17 bits

	sil 9s	/same with io
	sil 8s

	sza	/ac should now be 0
	hlt	/error

	dio tmp	/same with io
	sas tmp
	hlt	/error

/tests of sar and sir

	lac tst	/377777
	lio tst

	sar 9s
	sar 8s
	sir 9s
	sir 8s

	sza	/ac and io should both be 0
	hlt	/error

	dio tmp
	sas tmp
	hlt	/error

	lac tst 5	/400000
	lio tst 5

	sar 9s
	sar 8s
	sir 9s
	sir 8s

	cma	/ac should be all 1s
	sza
	hlt	/error

	cma
	dio tmp
	sas tmp	/same with io
	hlt	/error







/begin tests of scl and scr

	lac tst	/377777
	lio tst

	scl 1s	/combined shift

	sas tst 1
	hlt	/error

	dio tmp	/io should be 777776
	lac tst 2
	sas tmp
	hlt	/error

	lac tst	/scr test now
	lio tst

	scr 1s

	sas tst 3	/177777
	hlt		/error

	dio tmp
	lac tst 4
	sas tmp
	hlt	/error

/end of part 20

	szs 20	/if up
	jmp stt 2	/iterate
	jmp 7772	/read in next test

/random junk

tst,	377777
	377776
	777776
	177777
	577777
	400000
tmp,	0

foo,

start stt