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Section 3: Automatic Memory Stack and ALPHA Register 45
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The stack now looks like this:
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T
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2.0000
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Z
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1.0000
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Y
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4.0000
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X
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3.0000
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Continue pressing R until the stack returns
to the original position.
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Four presses of the R function will roll the
stack down four times, returning the stack contents to their original registers.
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The R (roll up) function works the same
way as R except that
R rolls the stack contents up instead
of down.
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Exchanging x and y
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The X Y (x exchange y) function
exchanges the contents of the X- and Y-registers without changing the contents
of the Z- and T-register. If you press X Y
with data intact from the previous example, the numbers in the X- and
Y-registers will be changed...
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...from this...
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...to this.
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