The EF9345 from SGS-Thomson Microelectronics, Inc., was a semigraphic single chip

microprocessor A microprocessor is a computer processor (computing), processor for which the data processing logic and control is included on a single integrated circuit (IC), or a small number of ICs. The microprocessor contains the arithmetic, logic, a ...

for video image control, encapsulated in a 40-pin DIP and used primarily in the

Matra Alice The Matra & Hachette Ordinateur Alice is a home computer sold in France beginning in 1983. It was a clone of the TRS-80 MC-10, produced through a collaboration between Matra and Hachette in France and Tandy Corporation in the United States. ...

32, Matra Alice 90 and

Philips VG5000 The VG5000μ is a computer created by Philips in 1984. It was manufactured in Le Mans by Radiotechnique (RTS) and marketed under the Philips, Radiotechnique, Radiola and Schneider Rundfunkwerke, Schneider brands. Not compatible with any other mach ...

microcomputers A microcomputer is a small, relatively inexpensive computer having a central processing unit (CPU) made out of a microprocessor. The computer also includes memory and input/output (I/O) circuitry together mounted on a printed circuit board (P ...

. It was also the video processor of the

Minitel The Minitel, officially known as TELETEL, was an interactive videotex online service accessible through telephone lines. It was the world's first and most successful mass-market online service prior to the World Wide Web. It was developed in Ces ...

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 Alphanumericals or alphanumeric characters are any collection of number characters and letters in a certain language. Sometimes such characters may be mistaken one for the other. Merriam-Webster suggests that the term "alphanumeric" may often ...

characters and 128 semigraphic characters. It had one semigraphic mode and 40- and 80-column text modes. It was able to address up to 16KB of dedicated video RAM.

Video Modes

* 50/60Hz output ** Interlaced or

progressive scan Progressive scanning (alternatively referred to as noninterlaced scanning) is a format of displaying, storing, or transmitting moving images in which all the lines of each frame are drawn in sequence. This is in contrast to interlaced video us ...

*Semigraphics: ** 128 standard character set with 5×7 pixel font dimensions. User definable 8×10 pixel

or semigraphic sets. *40 characters × 25 rows text mode (similar to

teletext Teletext, or broadcast teletext, is a standard for displaying text and rudimentary graphics on suitably equipped television sets. Teletext sends data in the broadcast signal, hidden in the invisible vertical blanking interval area at the to ...

): ** 8 × 10 pixel font ** Selectable background and foreground colors ** Styles: double height, double width, blinking, reverse, underline, conceal, insert, accentuation of lowercase characters *80 characters × 25 rows text mode: ** 6 × 10 pixel font ** Styles: blinking, underlining, reverse, color * 8 colors ( 3-bit RGB palette): :

On-Chip Character Generator

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

References

{{reflist

External links

EF9345 datasheet
Graphics chips Character sets

Video Modes

On-Chip Character Generator

See also

References

External links