Thomson EF936x

The Thomson EF936x series is a type of Graphic Display Processor (GDP) by Thomson-EFCIS.

[1] The chip could draw at 1 million pixels per second, which was relatively advanced for the time of its release (1982 or earlier).

[3] In 1982 Commodore released a "High Resolution Graphics" board for the PET based on the EF9365 and EF9366 chips, allowing it to display 512 × 512 or 512 × 256 resolution graphics.

[4][5][6] The EF9366 was also used on the SMP-E353 graphic card for the Siemens SICOMP [de] computer series and on the NDR-Klein-Computer introduced in 1984.

Based on the 1989 data book published by the company, the EF936x series was split into Graphics Controllers and Color Palette models:[13] 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.