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F4202·1
2/72
THE SINGER COMPANY
KEARFOTT DIVISION
Y240A200M202
3.5.3.2 Manual Bootstrap Loading By Load and Store Instructions From The Panel.
1.
Set the PANEL RUN switch to ON.
2.
Set the computer to STOP.
3.
Set the DISPLAY switch to A.
4.
Set the MEM/PANEL OPER switch to PANEL OPER (operand).
5.
Set the MEM/PANEL INST Switch to PANEL INST.
REV.
-
6.
Set a
LDA~long
(1400 HEX) into the 16 left-most INSTRUCTION switches. Set 78CO in
the 16 right-most INSTRUCTION switches.
7.
Setthe DATA switches to the value for this address setting as shown in Table 3.1.
8.
Depress the STEP switch once. After executing this instruction, the computer will stop.
9.
Set the 16 left-most INSTRUCTION switches for an STA-Iong (3COO HEX) instruction.
10.
Set the PANEL MODE-MEM/PANEL OPER to MEM.
II.
Depress the STEP button to store into memory the value last loaded from the panel.
12. To verify that the data entered into memory is correct, reset the INSTRUCTION switches
to an LOA instruction. Depressing the STEP button will display the memory contents of
. the address setting on the DATA bank of lights.
13. Set the 16 right-most INSTRUCTION switches for the next address called for in the
Bootstrap program.
14. Repeat steps (6) through (12) until the Bootstrap has been loaded and verified.
3.6 PROGRAM LOADING
To load the Loader/Verifier or other program, the Bootstrap Loader program must be loaded into
memory, and the program tape set to be read at the High Speed Reader or teletype reader (set to
FREE or STOP) with the RUBOUTS/DELETES (all holes) that precede the Load data positioned
under the read
head~
3-11
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