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:

    We hear the haunting presentiment of a dutiful middle age in the current reluctance of young people to select any option except the one they feel will impinge upon them the least.
    Gail Sheehy (b. 1937)

    Casting an eye on the education of children, from whence I can make a judgment of my own, I observe they are instructed in religious matters before they can reason about them, and consequently that all such instruction is nothing else but filling the tender mind of a child with prejudices.
    George Berkeley (1685–1753)