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20050401
k Stacks
The unit employs memory blocks, called
stacks
, for storage of low priority values and
commands. There is a 10-level
numeric value stack
, a 26-level
command stack
, and a 10-
level
program subroutine stack
. An error occurs if you perform a calculation so complex that
it exceeds the capacity of available numeric value stack or command stack space, or if
execution of a program subroutine exceeds the capacity of the subroutine stack.
Example
2-2-7
Special Functions
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2
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5
b
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d
e
f
g
h
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×
(
(
+
×
(
+
...
...
Numeric Value Stack Command Stack
# Calculations are performed according to the
priority sequence. Once a calculation is
executed, it is cleared from the stack.
#Storing a complex number takes up two numeric
value stack levels.
#Storing a two-byte function takes up two
command stack levels.
20050901