The Status Of Stack Lift - HP 35s User Manual

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Memory may inadvertently be cleared if the calculator is dropped or if power is
interrupted.

The Status of Stack Lift

The four stack registers are always present, and the stack always has a stack–lift
status. That is to say, the stack lift is always enabled or disabled regarding its
behavior when the next number is placed in the X–register. (Refer to chapter 2, "The
Automatic Memory Stack.")
All functions except those in the following two lists will enable stack lift.
B-4
User Memory and the Stack
CLEAR ALL
Unchanged
Unchanged
Unchanged
Unchanged
Unchanged
Unchanged
Unchanged
Unchanged
Unchanged
Unchanged
Unchanged
EQN LIST TOP
Cleared
Null
PRGM TOP
Cleared
Enabled
Cleared to zero
Cleared to zero
Not defined
Unchanged
MEMORY CLEAR
(Default)
Degrees
Decimal
Medium
""
"1,000"
4095
FIX 4
Cleared
xiy
Off
Zero
EQN LIST TOP
Cleared
Null
PRGM TOP
Cleared
Enabled
Cleared to zero
Cleared to zero
Not defined
RPN