Document Origin: | Greg Janusz |
Cyber1: | greg / pasr |
This document uses Unicode Font FreeSans, available at https://www.gnu.org/software/freefont/
Table 1: Simple PLATO character sequences -> Simple Unicode character
From lesson “charsets,” “standard” charset character listing | Proposed Unicode (single char) replacements | Unicode character in hex (and decimal for use with ALT+keypad on Windows) |
39 (a) alpha | ɑ | U+0251 (0593) |
41 (b) beta | β | U+3B2 (0946) |
42 (c) tilde operator | ∼ | U+223C (8764) |
43 (d) delta | δ | U+03B4 (0948) |
47 (g) pi | π | U+03C0 (0960) |
48 divide symbol | ÷ | U+00F7 (0247) |
49 (h) rho | ρ | U+03C1 (0961) |
50 (i) sigma | σ | U+03C3 (0963) |
51 (j) theta | ϴ | U+03F4 (1012) |
52 multiplication symbol | × | U+00D7 (0215) |
53 assign arrow | ⇐ | U+21D0 (8656) |
54 (k) omega | ω | U+03C9 (0969) |
55 (l) lambda | λ | U+03BB (0955) |
56 (m) micro | µ | U+00B5 (0181) |
57 (n) small tilde | ˜ | U+02DC (0732) |
58 (o) degree | ° | U+00B0 (0176) |
101 capital sigma | Σ | U+03A3 (0931) |
102 capital delta | Δ | U+0394 (0916) |
103 (A) left arrow | ← | U+2190 (8592) |
105 (B) up arrow | ↑ | U+2191 (8593) |
106 (C) down arrow | ↓ | U+2193 (8595) |
107 (D) right arrow | → | U+2192 (8594) |
109 (E) arrow prompt | ➤ | U+27A4 (10148) |
112 intersection symbol | ∩ | U+2229 (8745) |
113 (H) left brace | { | U+007B (0123) |
114 (I) vertical bar | | | U+007C (0124) |
115 (J) right brace | } | U+007D (0125) |
116 union symbol | ∪ | U+222A (8746) |
118 (K) equivalence symbol | ≡ | U+2261 (8801) |
120 (M) not equals symbol | ≠ | U+2260 (8800) |
121 (N) greater than or equal to symbol | ≥ | U+2265 (8805) |
122 (O) less than or equal to symbol | ≤ | U+2264 (8804) |
Table 2: Characters not mapped in “standard”/“charset”
MICRO comma (up arrow overlaying a down arrow) | ↕ | U+2195 (8597) |
For representing MICRO | ◽ | U+25A1 (9725) “White Medium Small Square” (There’s other sizes as well as filled-in ones) |
For representing a space, if desired | · | U+00B7 (0183) “Middle Dot” |
For representing shift | ⇧ | U+21E7 (8679)
Alternative choices: “⇪” U-21EA (8682), “⇮” U-21EE (8686), “⇑” U-21D1 (8657), “⇈” U+21C8 (8648) |
Example: Backspace (Shift-space) | ⇧· |
Cyber1 has some characters that draw on the previous character. These could be printed as either: how they look, or how they’re typed. The above entry shows how they could be shown as typed. They could also be shown as below. A problem with the below method is that on Cyber1 an umlaut can be placed over any character, but I could only find the following umlauted characters in Unicode. The same holds true for Cyber1’s circumflex and tilde (and maybe others I have forgotten about).
Table 3: Umlauted characters
over a space | ¨ | U+00A8 (0168) |
Ÿ | U+0178 (0376) | |
Ä | U+00C4 (0196) | |
Ë | U+00CB (0203) | |
Ï | U+00CF (0207) | |
Ö | U+00D6 (0214) | |
Ü | U+00DC (0220) | |
ä | U+00E4 (0228) | |
ë | U+00EB (0235) | |
ï | U+00EF (0239) | |
ö | U+00F6 (0246) | |
ü | U+00FC (0252) | |
ÿ | U+00FF (0255) | |