Archived. This mode is functional but I am not updating or maintaining it.
This is an Emacs major mode designed for editing programs for the HP 35s. It's pretty simple, but offers some useful features.
Copy hp35s-mode.el to a convenient location, and add this to your
Emacs init-file:
(load-file "PATH/TO/hp35s-mode.el")
If you want to automatically open files that end in .hp35s with the
mode, add this line beneath the load-file:
(add-to-list 'auto-mode-alist '("\\.hp35s\\'" . hp35s-mode))
Programs are stored with one command per line, just like the editor on the 35s. Each file should have just one label. Unlike the editor, there are no line numbers, and a program just looks like this:
x2
yx
2
+
ENTER
Rdown
To work with character limitations, commands that use things like alternate scripts and special symbols have alternate names, as follows (all other operations are typed exactly how they're spelled on the calculator).
| Command operation | hp35s-mode name |
|---|---|
| Roll down | Rdown |
| Roll up | Rup |
| y ^ x | yx |
| x ^ 2 | x2 |
| Integer division (INT÷) | INTdiv |
| STO+, STO-, STO×, STO÷ | STOadd, STOsub, STOmul, STOdiv |
| RCL+, RCL-, RCL×, RCL÷ | RCLadd, RCLsub, RCLmul, RCLdiv |
| x≠y?, x≤y?, x≥y?, x<y?, x>y?, x=y? | x!=y?, x<=y?, x>=y?, x<y?, x>y?, x=y? |
| x≠0?, x≤0?, x≥0?, x<0?, x>0?, x=0? | x!=0?, x<=0?, x>=0?, x<0?, x>0?, x=0? |
| x exchange y | swap |
| √x | rootx |
| x√y | xrooty |
| 1/x (invert) | 1/x |
| 10 ^ x | 10x |
| e ^ x | ex |
| ←ENG | backENG |
| ENG→ | ENGforw |
| +/- (negate) | chs |
| ∫ FN d | integralFNd |
| Σ+ | E+ |
| Σ- | E- |
| Σx | Ex |
| Σy | Ey |
| Σx^2 | Ex2 |
| Σy^2 | Σy2 |
| Σxy | Exy |
| x (overbar, stat function) | xbar |
| y (overbar) | ybar |
| xw (overbar, weighted) | xbarw |
| σx | sigmax |
| σy | sigmay |
| Sx | sx |
| Sy | sy |
| x (with pointy hat) | xhat |
| y (with pointy hat) | yhat |
| radix on (DISPLAY->7) | radixon |
| radix off (DISPLAY->8) | radixoff |
| x𝑖y | xiy |
| rθa | rthetaa |
| conversions (→F,→C, etc.) | toF, toC, etc. |
- Jump to line in GTO/XEQ instruction This command reads the line referenced in the current line, which should look like "GTO X293" or similar. It then jumps to that line, relative to the label at the top of the program.
- Return to last line jumped from This will jump back to the last line where the previous command was called. There's only one level of history.
- Print line number of current line relative to top This will calculate the line number relative to the label the code is in.
- Goto line in program relative to first label This command asks you in the minibuffer for a line to go to, like "A031".
- Estimate memory usage This command is different: it iterates over the program, looking for commands and simple structures, and tries to estimate the amount of memory the program will use on the calculator. (Usage data from the Datafile V26 Special Issue about the HP 35s).
- Import MoHPC Forum format program into buffer Load a file with text in this format (what I call "MoHPC Forum" format, because it's used there):
M001 x^2
M002 y^x
Loading the file will remove the labels automatically and replace the most common names for operations with the ones used by hp35s-mode. That means the above lines will become:
x2
yx
- Export to MoHPC Forum format (as .txt) This is basically the reverse of the above operation, converting the contents of the buffer to MoHPC Forum format---adding line numbers and replacing commands with alternate names.