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Section 2: Registers 32
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Sample Case: Turn the calculator off, then on, put the values 4, 3 2 and 1 in the
T, Z, Y, and X-registers, respectively, and review the stack.
using x y , R , E , and D .
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T
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4
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4
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Z
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4
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4
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3
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3
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Y
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4
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4
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3
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3
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2
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2
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X
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4
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4
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3
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3
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2
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2
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1
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Key
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4
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3
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2
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1
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Note: ENTER is here abbreviated as  .
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T
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4
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4
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4
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4
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Z
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3
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3
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3
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3
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Y
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1
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2
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1
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2
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X
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2
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1
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2
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1
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Key
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g  x y
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g  x y
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E
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E
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Using g  x y
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Using E
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Notice that using g  x y or E twice leaves the stack in 1ts original condition.
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T
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1
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2
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3
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4
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1
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2
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3
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4
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Z
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4
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1
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2
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3
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4
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1
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2
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3
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Y
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3
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4
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1
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2
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3
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4
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1
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2
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X
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2
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3
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4
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1
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2
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3
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4
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1
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Key
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g  R
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g  R
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g  R
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g  R
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D
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D
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D
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D
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Using g  R
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Using D
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Notice that using g  R or D four times leaves the stack in its original condition.
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