Dual Display Graphics Adapter   (250-3045A)  Features   Faxback Doc. # 2088
 
The Dual Display Graphics Adapter (DDGA) is a multi-application video display
adapter that combines on a single card the text, graphics, and color
capabilities of the IBM Monochrome Adapter, IBM Color/Graphics Adapter, the
Plantronics ColorPlus Adapter, and the Hercules Monochrome Graphics Adapter.

This board has a DB-9 female connection and an RCA composite connection.

IBM-compatible:
   Monochrome Text and Hercules-compatible Monochrome
   
Graphics:
   The DDGA displays all high-resolution monochrome IBM character set.

Video Controller: 
   6845 CRT Controller Chip

Color/Graphics Emulation:
   The DDGA displays color text and graphics as 16 distinct shades of gray 
   on a monochrome monitor without any special driver software.

Color/Graphics:
   The DDGA supports all standard IBM-compatible color/graphics software.

Plantronics-Compatible Color/Graphics:
   The DDGA supports all Plantronics-compatible software, displaying either 
   16 colors at 320 x 200 resolution or 4 colors at 640 x 200 resolution.

16-Color High Resolution:
   The DDGA can display 16 colors at 640 x 200 resolution.

132 Columns:
   The DDGA can display text in 132 columns on either color or monochrome 
   monitors.

An additional DDGA feature includes the ability to convert a color signal into
16 shades for composite monochrome monitors such as the Tandy VM-2 or VM-4.

The DDGA is designed for use with the VM-2, VM-3, VM-4, CM-2, CM-4, and CM-10
and CM-11 Tandy monitors, a color television set with a monitor input or any 
other TV connected with a modulator (such as 15-1273).

Recommended Monitors:

                 VM-4    VM-3    EGM-1   CM-5   TV Monitor
                 VM-5    CM-11        Modulator TV
Color Mode:

40 Column Text  | yes   | no    | yes   | yes   | yes
80 Column Text  | yes   | no    | yes   | yes   | no
132 Column Text | yes   | no    | yes   | no    | no
320x200 Graphics| yes   | no    | yes   | yes   | yes
640x200 Graphics| yes   | no    | yes   | no    | no

Monochrome Mode:

Text, Graphics  | no    | yes   | no    | no    | no