SM 7238 aka T3300 -- yet another DECclone, likely not of a DEC original, but of something compatible -- this one is Intel MCS80-based, with no character generator chip. Technical manual is rather good, and mentions a graphics option with Tek 401x and ReGIS features.

[Linked Image from img-fotki.yandex.ru]

[Linked Image from img-fotki.yandex.ru]