Varian Data 620/i System Reference Manual page 160

Table H-9
High-Speed Paper Tape
I/O
Reserved Instruction Codes
The following instruction codes are for use with the paper tape I/O unit. For
additional units, device addresses will be assigned at the time of system definition.
If only a reader or a punch is attached, use only those codes which apply.
Mnemonic Octal
Function
A. Externa I Control
EXC 037
100037 Connect Punch to BIC
EXC 437
100437 Stop Reader
EXC 537 100537
Start Reader
EXC 637
100637 Punch Buffer
EXC 737 100737
Read
0
ne Charac ter
B. Transfer
OAR 37
103137 Load Buffer from A Register
OBR 37
103237
Load Buffer from B Register
OME 37 103037
Load Buffer from Memory
INA 37
102137
Read Buffer into A Register
INB 37 102237
Read Buffer into B Register
IME 37
102037
Read Buffer into Memory
CIA
37
102537
Read Buffer into Cleared A Register
CIB 37 102637
Read Buffer into Cleared B Register
C. Sense
SEN 537
101537
Sense Buffer Ready
H-9