![EF9345P pinout](https://upload.wikimedia.org/wikipedia/commons/4/41/EF9345P_pinout.png)
The EF9345 from
SGS-Thomson Microelectronics, Inc., was a
semigraphic
Text-based semigraphics or pseudographics is a primitive method used in early text mode video hardware to emulate raster graphics without having to implement the logic for such a display mode.
There are two different ways to accomplish the emu ...
microprocessor
A microprocessor is a computer processor where the data processing logic and control is included on a single integrated circuit, or a small number of integrated circuits. The microprocessor contains the arithmetic, logic, and control circu ...
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.
T ...
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 m ...
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 (PC ...
.
The EF9345 was capable of displaying 8 colors (
RGB primaries), 128
alphanumeric
Alphanumericals or alphanumeric characters are a combination of alphabetical and numerical characters. More specifically, they are the collection of Latin letters and Arabic digits. An alphanumeric code is an identifier made of alphanumeric ch ...
characters and 128
semigraphic
Text-based semigraphics or pseudographics is a primitive method used in early text mode video hardware to emulate raster graphics without having to implement the logic for such a display mode.
There are two different ways to accomplish the emu ...
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 used ...
*Semigraphics:
** 128
standard character set with 5x7
pixel font dimensions. User definable 8x10 pixel
alphanumeric
Alphanumericals or alphanumeric characters are a combination of alphabetical and numerical characters. More specifically, they are the collection of Latin letters and Arabic digits. An alphanumeric code is an identifier made of alphanumeric ch ...
or semigraphic sets.
*40 characters x 25 rows text mode (similar to
teletext
A British Ceefax football index page from October 2009, showing the three-digit page numbers for a variety of football news stories
Teletext, or broadcast teletext, is a standard for displaying text and rudimentary graphics on suitably equipp ...
):
** 8 x 10 pixel font
** 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
** 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
,
See also
*
Thomson EF936x
The Thomson SA, Thomson EF936x series is a type of Graphic Display Processor (GDP) by STMicroelectronics, Thomson-EFCIS. The Microchip, chip could draw at 1 million pixels per second, which was relatively advanced for the time of its release (198 ...
*
Motorola 6847
The MC6847 is a video display generator (VDG) first introduced by Motorola and used in the TRS-80 Color Computer, Dragon 32/64, Laser 200, TRS-80 MC-10/Matra Alice, PC-6000 series, NEC PC-6000 series, Acorn Atom, and the APF Imagination Machine, ...
*
Motorola 6845
The Motorola 6845, or MC6845, is a display controller that was widely used in 8-bit computers during the 1980s. Originally intended for designs based on the Motorola 6800 CPU and given a related part number, it was more widely used alongside v ...
*
TMS9918
IMAGE:TMS9918A 01.jpg, VDP TMS9918A
IMAGE:TMS9918A 02.jpg, VDP TMS9918A
IMAGE:TMS9928A 01.jpg, VDP TMS9928A
The TMS9918 is a video display controller (VDC) manufactured by Texas Instruments, in manuals referenced as 'Video Display Processor' (VDP ...
*
MOS Technology VIC-II
The VIC-II (Video Interface Chip II), specifically known as the MOS Technology 6567/8562/8564 (NTSC versions), 6569/8565/8566 (PAL), is the microchip tasked with generating Y/C video signals (combined to composite video in the RF modulator) and D ...
*
List of home computers by video hardware
This is a list of home computers, sorted alphanumerically, which lists all relevant details of their video hardware.
Home computers are the second generation of desktop computers, entering the market in 1977 and becoming common during the 1980s. ...
References
{{reflist
External links
EF9345 datasheet
Graphics chips
Character sets