100 /	DEVICE ID.
 110 
 120 /	ASSUMING THE LOWEST  GROUP  ON  THE  DEVICE, THE FOLLOWING HANDLER NAMES APPLY
 130 /	(FOR LOGICAL UNITS 0 AND 1):
 140 
 150 /	ID 0
 160 
 170 /	DEVICE NAME    LUNIT   HSET    HANDLER STARTING BLOCK	  DISK BLOCKS
 180 
 190 /	WAA0:		0	0		     0		0000000-0007777
 200 
 210 /	WAB0:		0	1		32,768		0100000-0107777
 220 
 230 /	WAC0:		1	0		     0		0000000-0007777
 240 
 250 /	WAD0:		1	1		32,768		0100000-0107777
 260 
 270 /	ID 1
 280 
 290 /	DEVICE NAME    LUNIT   HSET    HANDLER STARTING BLOCK	  DISK BLOCKS
 300 
 310 /	DAA0:		0	0		     0		0000000-0007777
 320 
 330 /	DAB0:		0	1		32,768		0100000-0107777
 340 
 350 /	DAC0:		1	0		     0		0000000-0007777
 360 
 370 /	DAD0:		1	1		32,768		0100000-0107777
 380 
 390 /	ID 2
 400 
 410 /	DEVICE NAME    LUNIT   HSET    HANDLER STARTING BLOCK	  DISK BLOCKS
 420 
 430 /	EAA0:		0	0		     0		0000000-0007777
 440 
 450 /	EAB0:		0	1		32,768		0100000-0107777
 460 
 470 /	EAC0:		1	0		     0		0000000-0007777
 480 
 490 /	EAD0:		1	1		32,768		0100000-0107777
 500 
 510 /	ID 3
 520 
 530 /	DEVICE NAME    LUNIT   HSET    HANDLER STARTING BLOCK	  DISK BLOCKS
 540 
 550 /	FAA0:		0	0		     0		0000000-0007777
 560 
 570 /	FAB0:		0	1		32,768		0100000-0107777
 580 
 590 /	FAG0:		1	0		     0		0000000-0007777
 600 
 610 /	FAH0:		1	1		32,768		0100000-0107777
 620 	EJECT
 630 /	ID 4
 640 
 650 /	DEVICE NAME    LUNIT   HSET    HANDLER STARTING BLOCK	  DISK BLOCKS
 660 
 670 /	GAA0:		0	0		     0		0000000-0007777
 680 
 690 /	GAB0:		0	1		32,768		0100000-0107777
 700 
 710 /	GAC0:		1	0		     0		0000000-0007777
 720 
 730 /	GAD0:		1	1		32,768		0100000-0107777
 740 
 750 /	ID 5
 760 
 770 /	DEVICE NAME    LUNIT   HSET    HANDLER STARTING BLOCK	  DISK BLOCKS
 780 
 790 /	HAA0:		0	0		     0		0000000-0007777
 800 
 810 /	HAB0:		0	1		32,768		0100000-0107777
 820 
 830 /	HAC0:		1	0		     0		0000000-0007777
 840 
 850 /	HAD0:		1	1		32,768		0100000-0107777
 860 
 870 /	ID 6
 880 
 890 /	DEVICE NAME    LUNIT   HSET    HANDLER STARTING BLOCK	  DISK BLOCKS
 900 
 910 /	IAA0:		0	0		     0		0000000-0007777
 920 
 930 /	IAB0:		0	1		32,768		0100000-0107777
 940 
 950 /	IAC0:		1	0		     0		0000000-0007777
 960 
 970 /	IAD0:		1	1		32,768		0100000-0107777
 980 
 990 /	ID 7
1000 
1010 /	DEVICE NAME    LUNIT   HSET    HANDLER STARTING BLOCK	  DISK BLOCKS
1020 
1030 /	JAA0:		0	0		     0		0000000-0007777
1040 
1050 /	JAB0:		0	1		32,768		0100000-0107777
1060 
1070 /	JAC0:		1	0		     0		0000000-0007777
1080 
1090 /	JAD0:		1	1		32,768		0100000-0107777
1100 	EJECT
1110 /	CALLING SEQUENCE.
1120 
1130 /	THE CALLING SEQUENCE FOR THE NON-SYSTEM HANDLER  IS THE STANDARD P?S/8 CALLING
1140 /	SEQUENCE  FOR 128 WORDS/BLOCK DEVICES.  THE HANDLER  IS  RESPONSIBLE  FOR  ALL
1150 /	PARAMETERS BEYOND THE USER-SUPPLIED ARGUMENTS:
1160 
1170 /	CDF	MYFLD			/SET CALLER'S DATA FIELD
1180 /	CIF	HNDFLD			/SET HANDLER'S INSTRUCTION FIELD
1190 /	JMS I	(WINHND)		/CALL THE HANDLER
1200 /	PARAM				/PARAMETER POINTER
1210 /	ERRORRETURN			/RETURNS HERE WITH STATUS IN AC IF BAD
1220 /	GOODRETURN			/RETURNS HERE WITH CLEAR AC IF I/O WAS OK
1230 
1240 /	THE PARAMETER LIST MUST BE IN THE SAME FIELD AS THE CALLER:
1250 
1260 /PARAM,	ADDRESS				/12-BIT I/O TRANSFER ADDRESS
1270 /	FUNCTION			/FUNCTION WORD
1280 /	BLOCK				/STARTING BLOCK FOR TRANSFER
1290 
1300 /	FUNCTION WORD BREAKDOWN:
1310 
1320 /	BIT[0]:				READ IF 0, WRITE IF 1
1330 /	BITS[1-5]:			PAGE COUNT, 40 IF 0
1340 /	BITS[6-8]			TRANSFER FIELD
1350 /	BITS[9-11]			LOGICAL UNIT
1360 
1370 /	THE CALLING PROGRAM DETERMINES THE DISPOSITION OF I/O ERRORS.   DETAILED ERROR
1380 /	REPORTS CAN BE CONSTRUCTED BY PROGRAMS AWARE OF THE PARTICULARS  OF  THE  MDC8
1390 /	STATUS REGISTER.
1400 	EJECT