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What's been added in RPN-32 CE
For its price ($80 in 1978), the HP-32E was a remarkable calculator. It offered several statistical functions as well as hyperbolics. Conversions were available for units, decimal hours/hours.minutes.seconds and degrees/radians.
RPN-32 CE enhances the HP-32E in several ways:
MEMORY |
HP-32E |
RPN-32 CE |
| Registers |
15, split into R0..R8 and R.0..R.5 |
20, split into R0..R9 and R.0..R.9 |
| Register Arithmetic |
For STO operations only
RCL ∑+ only |
For both STO and RCL operations.
• Includes double-register ∑+ (R.1 and R.3) working with stack registers X and Y, respectively.
• Also includes LSTx (use the yˣ key as register address.) |
| Exchange X and Registers |
Not available |
Yes, directly or indirectly
(see bottom of page) |
| Indirect Addressing |
Not available |
Yes, via register R.9
Range: 0..20 (where 20 = LSTx)
Details |
| Volatility |
All memory contents lost on power-off |
Memory contents preserved ("continuous memory") |
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| FUNCTIONS |
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| PSE |
Not available |
Pause for 1 second |
| INT |
Not available |
Remove fractional part of X |
| FRAC |
Not available |
Remove integer part of X |
| RND |
Not available |
Round X to displayed value |
| ABS |
Not available |
Make X value positive |
| NOP |
Not available |
No operation |
| RAND |
Not available |
Create random number |
| GTO, GSB, RTN |
Not available |
Branching support |
| DSE, ISG |
Not available |
Loop control using R.9 |
| F?, SF, CF |
Not available |
10 flags (test, set, clear) |
x=y, x<y, x>y,
x≠y, x≤y, x≥y
(double-tap to switch sets) |
Not available |
Yes (execute next step if true, skip next step if false) |
x=0, x<0, x>0,
x≠0, x≤0, x≥0
(long-press to use 0 instead of y) |
Not available |
Yes (execute next step if true, skip next step if false) |
| (see "Extra Functions" at right) |
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| PROGRAMMING |
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| Programmable |
Not available |
Yes (99 steps) |
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| USER INTERFACE |
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| Prefix keys |
Active if pressed |
Active if pressed. Deactivated if pressed again. Indicators show state. |
| Register view |
Not available |
All registers shown on single screen including formatted display.
Run/Stop and single-step program without leaving register view. |
Decimal Point,
Thousands separator |
Fixed to "."
Thousands separator shown as comma |
User-selectable representations |
| Command display |
Not available |
In program mode or while single-stepping, current command is shown as text below display |
| Current step display |
Not available |
Current program step is shown below display |
| Program memory fill status |
Not available |
Red progress bar shows amount of program memory filled |
| Clock display |
Not available |
By tapping f (12-hr) or g (24-hr), then P/R. |
| Haptic feedback |
Of course |
Set by the action of storing 1939010X in R0 (where X = 0..3 = level) |
Optional programming and extra functions keys:
After double-tapping x=y:
With f prefix key active:
After double-tapping x<y:
With g prefix key active:
After double-tapping x>y:
ADDITIONAL FUNCTIONS
Some additional functions cannot be entered directly on RPN-32's keyboard, but you can paste
the keycodes shown below
into the display in PRGM mode.
RPN-32 expects a 2-digit dummy line number
followed by the keycode. Non-numeric characters are ignored.
Example:
Pasting the text 00 14 98 would insert the P≷S instruction after the current program step.
(Usage tip: Enter the text anywhere in the description field of your program, then cut and paste it.)
Function |
Keycode |
Description |
| x≷ |
76 nn |
Exchange X with any register
(nn = 0..19 = R0..R.9, nn = 20 = LSTx) |
| x≷i |
77 |
Exchange X indirectly (via R.9) |
| P≷S |
14 98 |
Swap primary and secondary registers |
| SWAP∑ |
15 98 |
Swap statistical values with locations used on RPN-25, and vice versa |
| ERROR1 |
14 80 |
Halts program execution and shows "Error" |
| ERROR2 |
15 80 |
Same as ERROR1, with error sound |
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Getting data into RPN-32 CE |
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You can preset RPN-32's registers with data created externally without having to type them in. |
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Simply prepare the data in text format in any app that can handle text, like Notes, Mail and many others. |
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The data format looks like this: |
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Rn or R.n value (where n = 0…9) |
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Example:
To set R1 = 4.5, R6 = 6.28E-7, R.3 = 439, prepare your data like this: |
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R1 4.5
R6 6.28e-7
R.3 439
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Select all of the text and paste. |
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Notes:
Upper-/lower-case is ignored.
One or more blanks or tabs may follow the register number.
M may be used in place of R.
R.n may also be written as R1n, e.g. R.3 is the same as R13.
The order of the registers is irrelevant.
Unlisted registers are left untouched.
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Extra Functions |
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PSE |
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Pauses program execution for one second. |
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INT |
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Sets the fractional part of x to 0. |
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FRAC |
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Sets the integer part of x to 0. |
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RND |
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Rounds x according to the currently shown digits. |
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ABS |
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Sets x to the positive value of x. |
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NOP |
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Executes a "no operation". Useful to do nothing after a test is true. |
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RAND |
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x ≤ 0: replaces X with an integer random number in the range 0…232–1.
x > 0: replaces X with an integer random number less than x, but no larger than 232–1. |
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GTO, GSB, RTN |
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GTO nn
Continue program execution at step nn.
GSB nn
Continue program execution at step nn, remembering step nn+1.
RTN
Continue program execution at latest step remembered by GSB.
Up to 4 return addresses may be pending.
Step arguments nn of GTO and GSB are automatically adjusted when inserting or deleting steps. |
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DSE, ISG |
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The functions DSE (Decrement and Skip if Equal or Less) and ISG (Decrement and Skip if Greater)
provide looping control by counting a value up or down, skipping the
next step when a predetermined limit value has been reached.
The loop control value must be stored in register R.9, using this format:
nnnnn.xxxyy
The integer part nnnnn (up to 5 digits) is the counter value being decremented or incremented.
The fractional part xxx (exactly 3 digits) is the limit value being compared to the counter value.
The fractional part yy (exactly 2 digits) determines the amount by which the counter is incremented or decremented.
DSE decrements nnnnn by yy. If the result is equal to xxx (or less than xxx), the next step is skipped.
ISG increments nnnnn by yy. If the result is greater than xxx, the next step is skipped.
Note that xxx defaults to 000, while yy defaults to 01.
The DSZ command (Decrement and Skip if Zero) found in other calculators may be emulated by simply storing the counter value n (1...99999) in register R.9. |
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TOP, MID, END |
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These keys quickly set the current step to convenient values.
TOP
Selects step 00
MID
Selects the step halfway through the program
END
Selects the last program step
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F?, SF, CF |
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10 flags (F0…F9) are available to be set, cleared, or tested.
Their state may be viewed in register view:
The register numbers display the state of same-numbered flags. If the flag is set, the number is highlighted.
F? n
Tests flag n. If it's set, program execution continues, otherwise the next step is skipped.
SF n
Set flag n.
CF n
Clear (reset) flag n.
F3 is auto-set by numeric user input.
F2 and F3 are auto-cleared on test.
In addition, F3 is cleared by g RTN keyed in by user,
TOP, GTO 00, or by changing the P/R mode.
All flags are cleared by executing CLEAR ALL or by setting the power switch to OFF.
Flags are stored along with the program.
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Comparisons |
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RPN-25/32/38 are the only
simulators of pre-HP-15C calculators to offer all 12 possible comparisons.
Basic:
x=y, as well as x<y, x>y (using f and g)
Extended:
Double-tap the operator to access additional comparisons:
x≠y, x≤y, x≥y
Single-tap the operator to select it.
Long-press the operator to replace y with 0 and select it. |
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