Semigraphic microprocessor by SGS-Thomson Microelectronics
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.
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
50/60Hz output
Interlaced or progressive scan
Semigraphics:
128 standard character set with 5x7 pixel font dimensions. User definable 8x10 pixel alphanumeric or semigraphic sets.
40 characters x 25 rows text mode (similar to teletext):[5]
^ abcGraphic Processors Databook(PDF). SGS Thomson. March 1989. p. 13.
^"MATRA HACHETTE ALICE". old-computers.com. Archived from the original on 2021-10-03. Retrieved 2021-10-03.
^"MATRA HACHETTE ALICE 90". old-computers.com. Archived from the original on 2021-10-03. Retrieved 2021-10-03.
^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.
^ abcdeEF9345 HMOS2 SINGLE CHIP SEMI-GRAPHIC DISPLAY PROCESSOR(PDF). SGS Thomson. March 1995.