Digital Equipment 300 Series AXP Reference Manual page 26

Graphics Capabilities
•
Installation For information about installing graphics options in the Model
Information 300/300X/300LX systems, see Chapter 2.
1–10
DEC OSF/1 Operating System
If your DEC 3000 Model 300 Series AXP system is running
the DEC OSF/1 AXP operating system, version 1.3B or
later, — the two-dimensional (2D) HX graphics option, the
two-dimensional (2D) TX graphics option, the 2D/3D ZLX
graphics options, or the 3D HX+ graphics option can be
installed in a TURBOchannel slot.
Adding either the HX option (for DEC OSF/1 AXP and
OpenVMS AXP), or adding either the HX+ or the TX option
(for DEC OSF/1 AXP only), allows you to expand the display
area. The TX option provides 8-bit and 24-bit accelerated
2D graphics, windowing operations, and a hardware cursor.
The HX+ option provides 8-bit and 24-bit accelerated 3D
graphics, windowing operations, and a hardware cursor.
Information about setting up your system to use more than
one monitor is provided in the DEC OSF/1 Guide to System
Administration.