The Thomson EF936x series is a type of Graphic Display Processor (GDP) by Thomson-EFCIS. The chip could draw at 1 million pixels per second, which was relatively advanced for the time of its release (1982 or earlier). There are various versions of the chip (EF9364, EF9365, EF9366, EF9367, SFF96364, EF9369), with slightly different capabilities. In 1982 Commodore released a "High Resolution Graphics" board for the PET based on the EF9365 and EF9366 chips, allowing it to display 512 x 512 or 512 x 256 resolution graphics. The EF9366 was also used on the SMP-E353 graphic card for the Siemens computer series and on the NDR-Klein-Computer introduced in 1984. Version EF9369 was used on computers such as the Thomson MO5NR, Thomson MO6, Thomson TO8, Thomson TO9 and Thomson TO9+, from 1985 to 1989. Versions Based on the 1989 data book published by the company, the EF936x series was split into Graphics Controllers and Color Palette models. Graphics Controllers EF9364 CRT Processor introduced in 1981 EF9365 512×512 (interlaced), 256×256, 128×128, 64×64; 50 Hz EF9366 512×256 (noninterlaced); 50/60 Hz EF9367 1024×512 (interlaced), 1024x416 (interlaced); 50/60 Hz (capable of SECAM system output for the French market). SFF96364 Color Palette EF9369 - 4-bit DACs (16 out of 4096 colors - 12-bit RGB), generating gamma corrected (gamma 2.8) voltages. TS9370 - 4-bit DACs (16 out of 4096 colors) Capabilities Integrated DRAM controller Line drawing, with delta-x and delta-y limited to 255 each. Support for solid, dotted, dashed and dotted/dashed lines. Built-in 5×8 pixel ASCII font. Support for rendering tilted characters, and scaling by integer factors (no antialiasing) Clear screen Light Pen support The GPUs did not support direct access to the graphics memory, although a special command was provided to aid in implementing access to individual memory words. See also Thomson EF934x Thomson MO5NR Thomson MO6 Thomson TO8 Thomson TO9 Thomson TO9+ NDR-Klein-Computer Commodore PET List of home computers by video hardware References External links Full schematics PCB Graphics chips Thomson computers