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Reset Storage to Zeros
Operator Action
1.
Press Stop key.
2.
Press I nsert key.
3.
Type:
260000800009
4.
Press Release key.
6.
Press I nstant Stop key.
Explanation
Halts processing and initiates manual mode.
Typewriter is conditioned to enter data into core storage, beginning at
location 00000.
Enter instruction to transmit field from location 00009 to 00008.
The instruction entered in step 3 is located at 00000-00011. The zero at 00009
is transmitted to 00008. Since the next location read is always the zero pre-
viously transmitted, there is no flag bit to halt the operation. Approximately
0.8 of a second is required to clear 20,000 positions of core storage. A Transmit
Field Immediate instruction or Transmit Record instruction may be used in the
same manner.
The operation is stopped with the machine in manual mode.
Display P and Q Addresses
1.
2.
3.
4.
5.
6.
66
Operator Action
Explanation
Press Stop key.
Halts processing and initiates manual mode.
Press S I E key until the instruction
that contains the desired address is
next.
Press the SeE key eight times.
Press Reset key.
Turn MARS switch to OR-1 (Operand
Address Register 1) and depress the
Display MAR key.
Turn MARS switch to OR-2 (Operand
Address Register 2) and depress the
Display MAR key.
One instruction is executed with each depression of the SIE key.
This steps through the eight I cycles.
Initiates manual mode.
The Q address, which is in OR-1, is displayed in MAR.
The P address, which is in OR-2, is displayed in MAR.
Note: If it is desired to continue program operation after Display, the
following actions should be taken:
1. Prior to Reset (step 4) the on/off conditions of machine status
and check indicators should be noted.
2. After Display (step 6) a Branch back to some instruction in the
program should be inserted. This instruction should be one that
will go back to where the indicators reset (step 4) will not affect
program operation.
If Reset and the subsequent necessity for branching and restart are un-
desirable, steps 4-6 can be omitted and the P and
Q
addresses can be
viewed, two digits at a time, during step 3 as they move through MBR
to OR-2 and OR-1. (See Program Testing section.)
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