1620 Console Operating Procedure - IBM 1620 1 Manual

1620 Console Operating Procedures
The following procedures are included to aid the con-
sole operator. They may be modified to meet indi-
vidual requirements.
Program Entry from Typewriter
1.
2.
3.
4.
5.
6.
7.
Operator Action
Press Insert key.
Type: 36 xxxxx 00 1 00 49 xxxxx
(No Q address)
Press Release key.
Press Start key.
Type program steps and data.
Press Release key.
Press Start key.
Program Entry from Paper Tape Reader
1.
2.
3.
4.
64
Operator Action
Press I nsert key.
Type: 36 xxxxx 0030049 xxxxx
(No Q address)
Press Release key.
Press Start key.
Explanation
Typewriter is conditioned to enter data into core storage, beginning at
location 00000.
Enter instructions to read numerically from typewriter, beginning at the
first position of program storage (xxxxx), and branch to first program
instruction.
Releases typewriter.
The Read Numerically instruction, entered in step 2, is executed.
As each character is typed, it is stored at location xxxxx and succeedingly
higher-numbered core storage positions.
Terminates read instruction.
The next sequential instruction, which is the branch to the first program
instruction at xxxxx, is executed.
Explanation
Typewriter is conditioned to enter data into core storage, beginning at
location 00000.
Enter instruction to read numerically from paper tape reader, beginning
at the first position of program storage (xxxxx), and branch to first
program instruct ion.
Release typewriter.
The Read Numerically instruction, entered in step 2, is executed. The
EL character punched in the tape causes a termination of the read in-
struction and execution of the next sequential instruction (branch to first
program instruction, which was entered in step 2).