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: Toggles debugging mode, echoed by Debug ON or Debug OFF. The small
+
= annunciator is lit for debug mode set. Note your WP 34S will not shut down
automatically in this mode.
152
(followed there by
Stands for MySamBa: the system asks SAM-BA? boot – keep
+
down and press
calculator off. This will work in debugging mode only (see above) to prevent
accidental access to this potentially dangerous feature. It is used in the
updating procedure on p.
Double Precision (DP) Calculations and Mode Switching
Your WP 34S starts in SP mode per default, wherein 16 digit precision is reached in all
calculations. Switching between SP and integer modes was discussed on p. 159.
Additionally, you may use your WP 34S in DP mode. Each DP register will contain 16
bytes
instead of eight, allowing for 34 digits instead of 16 (see below). Note matrix
commands will not work in DP.
DP allows for more precise calculations. While some computations will reach high
accuracy, we do not warrant 34 digit precision in all calculations in DP mode.
The following figure illustrates what happens in memory in transitions between SP and DP
modes, assuming startup in SP mode with REGS 16. RRA stands for 'relative register
address'.
WP 34S Owner's Manual
a hard reset (actuating the RESET button) or a battery pull will be
required!
Lack of the IR diode cannot cause a system hang since it cannot be
checked automatically. Note this diode may alternatively be connected
using one of the small USB boards mentioned in
installation guide for such a board (version 2) at the end of this
appendix here.
a second time to clear the GPNVM1 bit and turn the
WARNING: After issuing this combination, you can only boot in
MySamBa boot mode! Without the MySamBa software and a proper
cable (as mentioned on p. 147), you are lost!
+
is used in the updating procedure on p.
+
) but was not explained there.
152
but was not explained there.
Edition 3.1
Appendix
A. Find an
held
Page 186 of 211
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