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100
PROGRAMMING THE 91008
ADDITIONAL PROGRAMMING
required point in the memory. Alternatively, reserve the
(
+
) page for data storage only and write all program steps
on the
(-
) page.
lf peripheral equipment is to be used at a later date, it 1s ad-
visable,
if possible, to make provision for this at the time the
program is written. Insert a 'no operation' in each step required
to control the peripheral equipment. The 'continue' (CONT) in-
struction may be used as a 'no operation'. This allows the pro-
gram to be run now; then, when required, extra steps can be
easily inserted and it will not be necessary to change the ad-
dressing instructions in the program.
For the Model 9120A PRINTER Insert 'CONT' in the program
wherever a 'PRINT' instruction w1ll be required:
PR INT
/
SPACE causes the printer to print any combina-
tion (selected on the printer) of the contents of the X, Y
and Z registers;
'succesive PR I NT
....
SPACE instructions .cause the printer to
space after printing.
For the Model 9125A
X-Y
RECORDER make provision for a Sub-
routine to be written to control the
recorder.
ln this case insert
five (5) success1ve 'CONT' instructions in the program, then
when required, these can be replaced by GO TO, SUB, (
+
or -),
( ), ( ) and the subroutine can be inserted in any available
part of the memory .
....
I
j
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