DUS 2913 cold load sequence:

Record 0:

00.001423  002001    Write secondary 01H count 1 burst 0 address 00001424 chain 0 | record mode | right byte | no update
  Device 0 Tape Command Select Unit 0 executing
00.001430  001000    Wait | response 0000
00.001432  002400    Device Specified Jump 001435
00.001435  002001    Write secondary 01H count 1 burst 0 address 00001501 chain 0 | record mode | right byte | no update
00.001442  001000    Wait | response 0000
  Device 0 Tape Command Read Record executing
00.001444  002400    Device Specified Jump 001447
00.001447  001400    Read secondary 00H count 256 burst 64 address 00007100 chain 0 termination 001460 | burst mode | left byte
00.001454  000000    Relative Jump 001460
00.001456  000000    Relative Jump 001442
00.001460  002007    Write secondary 07H count 1 burst 0 address 00001502 chain 0 | record mode | right byte | no update
  Device 0 End | clear DSJ | inhibit poll | clear poll executing
00.001465  001402    Read secondary 02H count 2 burst 0 address 00001503 chain 0 termination 001472 | record mode | left byte | no update
  Device 0 Read Byte Count executing
00.001472  001000    Wait | response 0000
00.001474  002400    Device Specified Jump 001477
00.001477  000600    Interrupt/Halt 0000 | CPVA 0

Record 1:

00.007101  000000    Relative Jump 007114
00.007114  002401    Device Specified Jump 007120, 007105
00.007120  002001    Write secondary 01H count 1 burst 0 address 00007103 chain 0 | record mode | left byte | no update
  Device 0 Tape Command Read Record executing
00.007125  001000    Wait | response 0000
00.007127  002401    Device Specified Jump 007133, 007105
00.007133  001400    Read secondary 00H count 126 burst 64 address 00170100 chain 0 termination 007144 | burst mode | left byte
00.007140  000000    Relative Jump 007144
00.007142  000000    Relative Jump 007125
00.007144  002007    Write secondary 07H count 1 burst 0 address 00007103 chain 0 | record mode | right byte | no update
  Device 0 End | clear DSJ | inhibit poll | clear poll executing
00.007151  001402    Read secondary 02H count 2 burst 0 address 00007100 chain 0 termination 007156 | record mode | left byte | no update
  Device 0 Read Byte Count command started
00.007156  001000    Wait | response 0000
00.007160  002401    Device Specified Jump 170101, 007105

Continuation:

00.170101:      Relative Jump 170114
00.170103:      0813
00.170104:      0909
00.170105:      Read secondary 01H count 3 burst 0 address 00170101 chain 0 termination 170112 | record mode | left byte | no update
  Device 0 Read Status
00.170112:      Interrupt/Halt 0002 | CPVA 0
00.170114:      Write secondary 01H count 46 burst 1 address 00170104 chain 0 |burst mode | right byte | no increment
  Device 0 Tape Command Forward Space Record executing
00.170121:      Write Relative Immediate 170132 value 000000
00.170123:      Wait | response 0000
00.170125:      Device Specified Jump 170131, 170105
00.170131:      Relative Jump 170114
  Looks like the intent here is to do 46 FSRs, then change the jump above to JUMP *+2
  and then continue below.
00.170133:      Write secondary 01H count 1 burst 0 address 00170103 chain 0 | record mode | left byte | no update
  Device 0 Read Record
00.170140:      Wait | response 0000
00.170142:      Device Specified Jump 170146, 170105
00.170146:      Read secondary 00H count 256 burst 64 address 00007100 chain 0 termination 170157 | burst mode | left byte
00.170153:      Relative Jump 170157
00.170155:      Relative Jump 170140
00.170157:      Write secondary 07H count 1 burst 0 address 00170103 chain 0 | record mode | right byte | no update
  Device 0 End | clear DSJ | inhibit poll | clear poll executing
00.170164:      Read secondary 02H count 2 burst 0 address 00170100 chain 0 termination 170171 | record mode | left byte | no update
00.170171:      Wait | response 0000
  Device 0 Read Byte Count command started
00.170173:      Device Specified Jump 007101, 170105