Visualize EG

The Visualize EG is a Hewlett-Packard 2D graphics card used in their Series 700 UNIX workstations.
The Visualize-EG (project name Graffiti) was the basic graphics card in the era of HP's older B, C and J class workstations (e.g., the B132). In those, EG was the integrated (on the motherboard) display device, although it was also available in GSC and later PCI card form. EG is a descendant of HP's CRX family of graphics devices.
Despite being entry level, and offering no hardware 3D features, EG had excellent 2D performance. Specifications (without optional memory upgrade) are:
Optional memory can be used to provide one or the other of these benefits:
16 of these become image planes with the other 8 used as moveable "overlay" planes. Another 2 hardware colormaps become available, providing 2 for the image planes and 2 for the overlay planes.
The EG features an accelerated 2D graphics engine that is capable of:
The programming interface of the EG (and other HP graphics devices) has been kept private to HP, although efforts to release them are underway. The documentation needs to be "scrubbed" to check and remove company confidential material.