Disabling
Operations
There
are four operations that disable stack lift. A number keyed in
after one of these disabling operations writes over the number cur
rentlyin the
X-register.
The
Y-,
Z- and
T-registers
remain unchanged.
ENTER
2 +
2-
CLx
In addition, when (c] and (TJact like
CLx,
they also disable stack lift.
The INPUT function
disables
stack lift as it halts a program for
prompting (so any number you then enter writes over the
X-register),
but
it
enables
stack lift
when
the program resumes.
Neutral
Operations
The following operations do not alter the previous status of the stack
lift:
DEG,RAD,
FIX,SCI,
DEC,
HEX,
CLVARS
GRAD
ENG,ALL
OCT,BIN
PSE
SHOW
RADIX.;RADIX,
CL2
|OFF|
inary
|
R/s
| and STOP
|GTO|QQ
Errors
[C]*,®*
IMEMKURR
|MEM|{PGM}t
Digit
entry
IGTOM-l/abe/rm
Switching b
1
prgm
|
and
pro
windows
gram
entry
*Except
when
used like CLx.
tIncluding all operations performed while the
catalog
is displayed except {VflR} 1
ENTER
I
and
{PGM}
|
xeq
I,
which
enable stack
lift.
B:
User
Memory
and
the
Stack
257
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