Need a DDR Example

[Bo]

For backing up three volumes to a single 3590 Tape Cartridge.

[Bo]

Clarification....
I have old VM releases on my system and would like to DDR 520RES and
520W01 to a single 3590 reel. I have not written DDR commands in over
10 years and I think it goes something like this.

INPUT 3390 520RES
OUTPUT 200 3590 (COMP LEAVE
DUMP ALL

(This would be saved as D520RES DDR A)

INPUT 3390 520W01
OUTPUT 200 3590 (COMP
DUMP ALL
(This would be saved as D520W01 DDR A)

I would then have an exec DUMPVOLS EXEC A
/* */
CP ATT 200 *
CP ATT 540 * (address of 520RES)
CP ATT 541 * (address of 520W01)
TAPE REW 200
DDR D520RES DDR A
TAPE WTM 200
DDR D520W01 DDR A
END

(As I recall, this should attach the devices, rewind the tape, dump
the first volume, put a tape mark between files, dump the second
volume. Within the DDR statements the first job will LEAVE the tape
after EOT and the second DDR will UNLOAD the tape by default.)

Sound Right?

[Bo]

INPUT 550 3390 520RES
OUTPUT 181 3590 (COMP LEAVE
DUMP ALL

INPUT 551 3390 520W01
OUTPUT 181 3590 (COMP
DUMP ALL

/* */
' CP ATT 200 * 181'
' CP ATT 550 * '(address of 520RES)
' CP ATT 551 *' (address of 520W01)
' TAPE REW '
' DDR D520RES DDR A'
' TAPE WTM '
' DDR D520W01 DDR A'
' END'

(Getting closer)