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Thomson EF9345

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The EF9345 from SGS-Thomson Microelectronics, Inc., was a semigraphic[1] single chip microprocessor for video image control,[1] encapsulated in a 40-pin DIP and used primarily in the Matra Alice 32,[2] Matra Alice 90[3] and Philips VG5000 microcomputers.[4] It was also the video processor of the Minitel 1b terminals, built by either Alcatel and Philips at more than 2 million of units.

EF9345 pinout

The EF9345 was capable of displaying 8 colors (RGB primaries), 128 alphanumeric characters and 128 semigraphic characters.[5] It had one semigraphic mode and 40- and 80-column text modes.[5] It was able to address up to 16KB of dedicated video RAM.

Video Modes

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  • 50/60Hz output
  • Semigraphics:
  • 40 characters x 25 rows text mode (similar to teletext):[5]
    • 8 x 10 pixel font[5]
    • Selectable background and foreground colors
    • Styles: double height, double width, blinking, reverse, underline, conceal, insert, accentuation of lowercase characters
  • 80 characters x 25 rows text mode:
    • 6 x 10 pixel font[5]
    • Styles: blinking, underlining, reverse, color
  • 8 colors (3-bit RGB palette):
 

On-Chip Character Generator

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The on-chip character generator offered several character sets, including alphanumeric and videotext compatible semigraphics.[1]

G0 Alphanumeric Character Set in 40 or 80 Character/Row Mode
0x 1x 2x 3x 4x 5x 6x 7x
0 ⸮ º SP 0 @ P - p
1 Â ± ! 1 A Q a q
2 É é " 2 B R b r
3 £ ë # 3 C S c s
4 â ï $ 4 D T d t
5 Ç ç % 5 E U e u
6 Ë û & 6 F V f v
7 À à ' 7 G W g w
8 Ù ÷ ( 8 H X h x
9 È è ) 9 I Y i y
A Œ œ * : J Z j z
B Ê ê + ; K [ k ▏
C ← ¼ , < L \ l │
D î ½ - = M ] m ▕
E → ¾ . > N ↑ n ▔
F ↓ ô / ? O ▁ o █
G0 Alphanumeric Character Set in 40 Character/Row Mode - R003
0x 1x 2x 3x 4x 5x 6x 7x
0 ▔ º SP 0 @ P - p
1 ¨ ± ! 1 A Q a q
2 É é " 2 B R b r
3 £ § # 3 C S c s
4 ÷ ` $ 4 D T d t
5 Ç ç % 5 E U e u
6 Ä ä & 6 F V f v
7 Ö ẞ ´ 7 G W g w
8 Ü à ( 8 H X h x
9 È è ) 9 I Y i y
A Œ œ * : J Z j z
B ü ù + ; K [ k {
C ← ¼ , < L \ l │
D î ½ - = M ] m }
E → ¾ . > N ^ n ~
F ↓ ô / ? O ▁ o █
G0 Alphanumeric Character Set in 40 Character/Row Mode - R005
0x 1x 2x 3x 4x 5x 6x 7x
0 ~ º SP 0 @ P - p
1 § ± ! 1 A Q a q
2 ü é " 2 B R b r
3 £ ë # 3 C S c s
4 â ï $ 4 D T d t
5 } ç % 5 E U e u
6 ä û & 6 F V f v
7 ö à ' 7 G W g w
8 ù ÷ ( 8 H X h x
9 ẞ è ) 9 I Y i y
A Œ œ * : J Z j z
B { ê + ; K [ k ▏
C ← ¼ , < L \ l │
D î ½ - = M ] m ▕
E → ¾ . > N ↑ n ▔
F ↓ ô / ? O ▁ o █
G10 Semigraphic Character Set (videotex compatible)
4x 5x 6x 7x
0 SP 🬏 🬞 🬭
1 🬀 🬐 🬟 🬮
2 🬁 🬑 🬠 🬯
3 🬂 🬒 🬡 🬰
4 🬃 🬓 🬢 🬱
5 🬄 ▌ 🬣 🬲
6 🬅 🬔 🬤 🬳
7 🬆 🬕 🬥 🬴
8 🬇 🬖 🬦 🬵
9 🬈 🬗 🬧 🬶
A 🬉 🬘 ▐ 🬷
B 🬊 🬙 🬨 🬸
C 🬋 🬚 🬩 🬹
D 🬌 🬛 🬪 🬺
E 🬍 🬜 🬫 🬻
F 🬎 🬝 🬬 █
G11 Stroke Set
0x 1x
0
1 🮡 ╵
2 🮣 ╶
3 🮥 └
4 🮢 ╷
5 🮩 │
6 🮦 ┌
7 🮪 ├
8 🮠 ╴
9 🮧 ┘
A 🮨 ─
B 🮬 ┴
C 🮤 ┐
D 🮭 ┤
E 🮫 ┬
F 🮮 ┼
G20 Accentued Character Set
0x 1x 2x 3x
0 ¯ ´ `
1 ˙ ¨ ,
G21 Accentued Character Set - R000
0x 1x
0 - p
1 a q
2 b r
3 c s
4 d t
5 e u
6 f v
7 g w
8 h x
9 i y
A j z
B k ▏
C l │
D m ▕
E n ▔
F o █
G21 Accentued Character Set - R003
0x 1x
0 - p
1 a q
2 b r
3 c s
4 d t
5 e u
6 f v
7 g w
8 h x
9 i y
A j z
B k {
C l │
D m }
E n ~
F o █

See also

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References

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  1. ^ a b c Graphic Processors Databook (PDF). SGS Thomson. March 1989. p. 13.
  2. ^ "MATRA HACHETTE ALICE". old-computers.com. Archived from the original on 2021-10-03. Retrieved 2021-10-03.
  3. ^ "MATRA HACHETTE ALICE 90". old-computers.com. Archived from the original on 2021-10-03. Retrieved 2021-10-03.
  4. ^ Hervier, Carl; Vanlierde, Stéphane (2023). "La vidéo du VG5000". La page de fans du VG 5000µ. Archived from the original on 2021-08-21. Retrieved 2021-10-03.
  5. ^ a b c d e EF9345 HMOS2 SINGLE CHIP SEMI-GRAPHIC DISPLAY PROCESSOR (PDF). SGS Thomson. March 1995.
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