free42 Programming Tools
| Author: | Mitch Richling |
| Updated: | 2024-11-21 16:49:22 |
Copyright 2024 Mitch Richling. All rights reserved.
Table of Contents
1. Metadata
The home for this HTML file is: https://richmit.github.io/hp42/hp42s-meta.html
Files related to this document may be found on github: https://github.com/richmit/hp42
Directory contents:
src |
- | The org-mode file that generated this HTML document |
src_42s |
- | Ready to convert source listings for 42s code in this document |
docs |
- | This html document and associated PDF |
bin |
- | Importable RAW program files |
2. Introduction
This org-mode document contains various tools (mostly for Emacs) that help me write programs for the 42s:
- Elisp function to generate 42s menu programs
- A tool to insert free42 utf-8 characters given a list of character numbers
- Elisp function to generate custom menus (menus of built-in functions and global labels)
- yasnippet templates to help type code
- ElISP Code to translate my code listings into code for free42 & MD42
- 42s notes
- free42 utf-8 characters with character numbers
4. Emacs Helper Stuff
The elisp file hp42s-mode.el provides few things:
- A language mode for free42 code – mostly just provides syntax highlighting
MJR-ins42char: Lisp function to insert characters given a list of character codesMJR-dired-org-export: Lisp function to export to HTML and tangle all marked files in a dired bufferMJR-process-buffer-as-42s-code: Lisp function to process all free42 code in a buffer for pasting into free42MJR-target-free42-version: Variable used byMJR-process-buffer-as-42s-code&MJR-copy-42s-code-in-regionto control version of free42MJR-copy-42s-code-in-region: Lisp function that process marked region for pasting into free42 and puts the test on the kill ring – likeMJR-process-buffer-as-42s-codebut for a region.
To activate the functionality, simply load the hp42s-mode.el file into emacs. You can evaluate teh folloing block to do that:
(load-file "../emacs/hp42s-mode.el")
4.1. Prepare Code For Conversion
I include comments like @@## that I use like compiler directives in C. They provide a way to remove lines of code that are incompatible or unnecessary for
the target version of free42. It's a bit of a hack, but it lets me maintain one program for diff-rent versions of free42. When I "tangle" an org-mode
buffer, the code is automatically filtered for the selected version of free42 (set via MJR-target-free42-version).
| DM42 Version | Target Free42 |
|---|---|
| DMCP 3.22 / DM42 v3.20 | 3.0.5 |
| DMCP 3.21 / DM42 v3.18 | 3.0.2 |
| DMCP-3.20 / DM42-3.17 | 2.5.20 |
| DMCP-3.20 / DM42-3.16 | 2.5.20 |
| DMCP 3.18 / DM42 v3.15 | 2.5.16 |
4.2. Automatically processing tangled code
By adding MJR-process-buffer-as-42s-code to the org-babel-post-tangle-hook, you can automatically process tangled code. You can do that by evaluating
the next block:
(add-hook 'org-babel-post-tangle-hook 'MJR-process-buffer-as-42s-code)
A handy way to tangle a file, or files in dired, is the MJR-org-export-der in my .emacs file.
4.3. Tangle & Load Tangled File
(defun MJR-tangle-and-load () "Tangles current file and attempts to load the tangled file. The tangled file is determiend by looking backward for a :tangle argument." (interactive) (save-excursion (org-babel-tangle) (if (re-search-backward ":tangle[[:blank:]]+\\([^[:blank:]]+.hp42s\\)$" nil t) (let ((file-name (match-string 1))) (if (or (string-equal "yes" file-name) (string-equal "no" file-name)) (message "No explicit tangle file specified") (find-file file-name))))))
4.4. yas templates
echo '' for f in ~/core/yasnippet/hp42s-mode/*; do cat $f; echo ''; done
5. free42 Notes
5.1. Character Set
0 ÷
1 ×
2 √
3 ∫
4 ▒
5 Σ
6 ▸
7 π
8 ¿
9 ≤
10 [LF]
11 ≥
12 ≠
13 ↵
14 ↓
15 →
16 ←
17 μ
18 £
19 °
20 Å
21 Ñ
22 Ä
23 ∡
24 ᴇ
25 Æ
26 …
27 [ESC]
28 Ö
29 Ü
30 ▒
31 •
32 [SPACE]
33 !
34 "
35 #
36 $
37 %
38 &
39 '
40 (
41 )
42 *
43 +
44 ,
45 -
46 .
47 /
48 0
49 1
50 2
51 3
52 4
53 5
54 6
55 7
56 8
57 9
58 :
59 ;
60 <
61 =
62 >
63 ?
64 @
65 A
66 B
67 C
68 D
69 E
70 F
71 G
72 H
73 I
74 J
75 K
76 L
77 M
78 N
79 O
80 P
81 Q
82 R
83 S
84 T
85 U
86 V
87 W
88 X
89 Y
90 Z
91 [
92 \
93 ]
94 ↑
95 _
96 `
97 a
98 b
99 c
100 d
101 e
102 f
103 g
104 h
105 i
106 j
107 k
108 l
109 m
110 n
111 o
112 p
113 q
114 r
115 s
116 t
117 u
118 v
119 w
120 x
121 y
122 z
123 {
124 |
125 }
126 ~
127 ├
128 :
129 ʏ
5.2. Date format
| Flag 67 | Flag 31 | Mode |
|---|---|---|
| Set | N/A | Y.MD |
| Clear | Clear | M.DY |
| Clear | Set | D.MY |
5.3. Stats registers
| Register | Contents |
|---|---|
| ΣREG? + 0 | Σx |
| ΣREG? + 1 | Σx^2 |
| ΣREG? + 2 | Σy |
| ΣREG? + 3 | Σy^2 |
| ΣREG? + 4 | Σxy |
| ΣREG? + 5 | n |
| ΣREG? + 6 | Σlnx |
| ΣREG? + 7 | Σ(lnx)^2 |
| ΣREG? + 8 | Σlny |
| ΣREG? + 9 | Σ(lny)^2 |
| ΣREG? + 10 | Σlnxlny |
| ΣREG? + 11 | Σxlny |
| ΣREG? + 12 | Σylnx |
6. DM 42 Notes
6.1. Display
GrMod is a read write variable.
- 0 = standard HP-42S resolution 131x16
- 2 = DM42 full resolution 200x120
- 3 = DM42 full resolution 400x240
ResX & ResY are read only variables that have the display resolution