Disabling Operations
The five operations
() disable stack lift. A number keyed in after one of these disabling
operations writes over the number currently in the X–register. The Y–, Z– and T–
registers remain unchanged.
In addition, when
The INPUT function disables stack lift as it halts a program for prompting (so any
number then entered writes over the X-register), but it enables stack lift when the
program resumes.
Neutral Operations
The following operations do not affect the status of stack lift:
DEG, RAD,
GRAD
PSE
h
(1)**
EQN
Switching binary
windows
Except when used like CLx.
Including all operations performed while the catalog is displayed except
{}
/
,
,
and
act like CLx, they also disable stack lift.
FIX, SCI,
ENG, ALL
SHOW
and STOP
(2)**
FDISP
Digit entry
and {}
-
,
DEC, HEX,
OCT, BIN
RADIX . RADIX , CL
×
Ø
and
Errors
xiy r a
, which enable stack lift.
User Memory and the Stack
() and
CLVARS
* and
label nnn
and program
entry
:
*
B-5