Lattice, National Semiconductor, SGS-Thomson
16V8, 16V8A, 16V8B, 16V8D,
20V8, 20V8A, 20V8B, 20V8D GALs.

A complex solution for cable TV companies to support theirs own Teletext transmission. Built into a standard 19" rack, with an attached editor program running on PC. Several references: Budapest, Várpalota, Nyíregyháza, Temesvár, etc.

Any waveform, edited by the enclosed editor program, can be downloaded to the memory of the equipment. It can run continouosly or in triggered mode.
The stored waveform is not lost even at power down.

Programming reference