Type III C lass A Program

Set Location counter (SLC) Card
The Set Location counter Card "sets the location counter used
with the loader. The file loaded in after the SLC card is
placed in core beginning at the address set by this SLC
card. The SLC card has the format shown in Figure 43. It
sets the location counter in one of three ways:
a. With the absolute address specified as a hexadecimal
number in columns 7-12.
b. With the symbolic address already defined as a program
name or entry point. This is specified by a symbolic name
punched in columns 17-22.
c. If both a hexadecimal address and a symbolic name are
specified, the absolute address is converted to binary and
added to the address assigned to the symbolic name; the
resulting sum is the address to which the loader's location
counter is set. For example, if OOOOF8 was specified in
columns 7-12 of the SLC card image and GAMMA was specified
in": columns 17-21, where GAMMA has an assigned address of
006100 (hexadecimal), the absolute address in columns 7-12
is added to the address assigned to GAMMA giving a total of
0061F8. Thus, the location counter would be set to 0061F8.
If there are blanks in both columns 7-12 and 17-22, or the
symbolic name has not yet been defined, the response INVALID
CARD xxx •• ,.xxx is typed out--or", depending on whether the
LOAD option SINV or PINV was specified, is written in the
file LOAD MAP. If only the symbolic aduress is to be used,
columns 7-12 must be left blank or all zeros. If only the
absolute address is to be used, columns 11-22 must be left
blank.
520 Changing Object Programs