IBM 1401 - Modifiers For Select Stacker (K) Instruction

Modifiers For Select Stacker (K) Instruction

BCD Character Unit Meaning
Blank 1401 set program activity recording

at BBB only if A is, dd

1 1402 select last card read to stacker 1 if within 10 ms
2 1402 select last card read to stacker 8/2 if within 10 ms
4 1402 select previous card punched to stacker 4
8 1402 select previous card punched to stacker 8/2
= or # 1444 select previous card punched to stacker 2
L 1009 operate in load mode
$ 1402 overlap on
A 1009 suppress 3-second alarm
C DDC read request
D 1009 set direction to receive
DDC write request
E 1009 set direction to transmit
DDC reset
F 1009 send EOF
. 1402 overlap off
) 1402 reset overlap

Read more about this topic:  IBM 1401

Famous quotes containing the words select and/or instruction:

    The director is simply the audience. So the terrible burden of the director is to take the place of that yawning vacuum, to be the audience and to select from what happens during the day which movement shall be a disaster and which a gala night. His job is to preside over accidents.
    Orson Welles (1915–1984)

    The care of a house, the conduct of a home, the management of children, the instruction and government of servants, are as deserving of scientific treatment and scientific professors and lectureships as are the care of farms, the management of manure and crops, and the raising and care of stock.
    Catherine E. Beecher (1800–1878)