*20
	MAINDEC-12-D3FB
	 
	PDP 12  TAPE DATA TEST
	 
	START ADDRESS
	LOC 20 INST FLD 2
	L MODE
	 
	SW SET
	SNS SW 0 = 1 IGNORE ERROR
	SNS SW 1 = 1 LOOP ON READ WRITE TST
	SNS SW 2 = 1 LOOP ON WRITE PORTION OF TST
	SNS SW 3 = 1 LOOP ON READ PORTION OF TST
	SNS SW 4 = 0 FIXED DATA PATTERN
	SNS SW 4 = 1 RANDOM DATA PATTERN
	SNS SW 5 = 1 LONG SCOPE LOOP TEST