Device definition list

Read this information to find out additional information about device definition lists.

The device definition list part of the open feedback area is an array structure. Each entry in the array contains information about each device or communications session that you attach to the file. The number at offset 146 of the open feedback area shows the number of entries in this array. The device definition list begins at offset 148 of the open feedback area. The offsets shown for it are from the start of the device definition list rather than the start of the open feedback area.

Table 1. Device definition list
Offset	Data type	Length	Contents		File type
0	Character	10	Program device name. For database files, the value is DATABASE. For printer or diskette files being spooled, the value is N. For save files, the value is NONE. For ICF files, the value is the name of the program device from the ADDICFDEVE or OVRICFDEVE command. For all other files, the value is the name of the device description.		Tape and diskette
10	Character	50	Reserved.
60	Character	10	Device description name. For printer or diskette files being spooled, the value is N. For save files, the value is NONE. For all other files, the value is the name of the device description.		Tape and diskette
70	Character	1	Device class. hex 01 Display hex 02 Printer hex 04 Diskette hex 05 Tape hex 09 Save hex 0B ICF		Tape and diskette
71	Character	1	Device type.
			hex 08	Spooled
			hex 1A	9347 Tape Unit
			hex 1B	9348 Tape Unit
			hex 1C	9331-1 Diskette Unit
			hex 1D	9331-2 Diskette Unit
			hex 2A	6346 Tape Unit
			hex 2B	2440 Tape Unit
			hex 2C	9346 Tape Unit
			hex 2D	6331 Diskette Unit
			hex 2E	6332 Diskette Unit
			hex 3A	3430 Tape Unit
			hex 3B	3422 Tape Unit
			hex 3C	3480 Tape Unit
			hex 3D	3490 Tape Unit
			hex 49	6367 Tape Unit
			hex 4A	6347 Tape Unit
			hex 4E	6341 Tape Unit
			hex 4F	6342 Tape Unit
			hex 50	6133 Diskette Unit
			hex 53	6366 Tape Unit
			hex 54	7208 Tape Unit
			hex 5A	6343 Tape Unit
			hex 5B	6348 Tape Unit
			hex 5C	6368 Tape Unit
			hex 64	6344 Tape Unit
			hex 65	6349 Tape Unit
			hex 66	6369 Tape Unit
			hex 67	6380 Tape Unit
			hex 68	6378 Tape Unit
			hex 69	6390 Tape Unit
			hex 70	6379 Tape Unit
			hex 71	9331-11 Tape Unit
			hex 72	9331-12 Tape Unit
			hex 73	3570 Tape Unit
			hex 74	3590 Tape Unit
			hex 75	6335 Tape Unit
			hex 76	1/4-inch Cartridge Tape¹
			hex 77	1/2-inch Cartridge Tape¹
			hex 78	1/2-inch Reel Tape¹
			hex 79	8mm Cartridge Tape¹
72	Binary	2	Not applicable to tape and diskette.
74	Binary	2	Not applicable to tape and diskette.
76	Character	2	Not applicable to tape and diskette.
78	Character	1	Not applicable to tape and diskette.
79	Character	1	Not applicable to tape and diskette.
80	Character	50	Reserved.
Note: If the device is not listed in this table, use one of the following general categories: hex 76—1/4" Cartridge Tape hex 77—1/2" Cartridge Tape hex 78—1/2" Reel Tape hex 79—8mm Cartridge Tape