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1987-07-14
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IBM Personal Computer Enhanced Graphics Adapter (1501200)
Graphics Memory Expansion Card (1501201)
Graphics Memory Module Kit (1501203)
The Enhanced Graphics Adapter provides support for the new IBM 5154 Personal
Computer Enhanced Color Display, enhanced support for the IBM 5153 Color
Display and new graphics support for the IBM 5151 Monochrome Display.
Text and graphics applications are supported with a wide variety of display
modes.
HIGHLIGHTS
o Supports either IBM 5151 Monochrome Display, IBM 5153 Color Display, or
new IBM 5154 Personal Computer Enhanced Color Display
o 640 x 350 support in up to 16 colors for graphics on the IBM 5154
Personal Computer Enhanced Color Display
o High quality (8 x 14 character box) text in color on the IBM 5154
Personal Computer Enhanced Color Display
o Full 16-color graphics operation with the IBM 5153 Color Display in
either 320 x 200 pixel addressability graphics or 640 x 200 pixel
addressability graphics modes
o 640 x 350 graphics mode for the IBM 5151 Monochrome Display with 8 x 14
character box for text in graphics mode
o Compatible 9 x 14 character box on the IBM 5151 Monochrome Display in
text mode
o Under program control, colors may be selected from a palette of 64 colors
when connected to the IBM 5154 Personal Computer Enhanced Color Display
o Expandable graphics memory--64KB on the Enhanced Graphics Adapter
expandable to 128KB with the Graphics Memory Expansion Card. This
increases the color range for 640 x 350 graphics to 16 colors from the
four colors provided by the base card for 640 x 350 graphics
o Graphics memory may be expanded to 256KB with the Graphics Memory Module
Kit. The added space may be used to support smooth scrolling and
panning, as well as for more pages of graphics data
o Supported by Virtual Device Interface (VDI) in both 640 x 350 graphics
for the IBM 5151 Monochrome Display and for the IBM 5154 Personal
Computer Enhanced Color Display and in compatible graphics modes for the
IBM 5153 Color Display and for the IBM 5154 Personal Computer Enhanced
Color Display (See section on Graphics Development Tool Kit for more
information on VDI support).
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o RAM-resident character generator can be loaded from user program allowing
any set of 256 characters to be incorporated into applications.
Character space expands to 512 with the Graphics Memory Expansion Card
and to 1024 with the Graphics Memory Module Kit. Allowable character box
sizes up to 32 dots high, 8 dots wide.
o Compatibility modes allow the execution of programs written for either
the Monochrome Display Adapter with the IBM Monochrome Display or by the
Color/Graphics Monitor Adapter with the IBM 5153 Color Display (see
Programming Considerations for limitations). Composite Video support for
attaching analog monitors or TV sets is not provided.
o A light pen to be used with compatible monitors (not the IBM 5151
Monochrome Display), may be attached to the card.
INSTALLATION/OPERATION
o The Enhanced Graphics Adapter can be installed in any full-size slot in a
IBM Personal Computer, IBM Personal Computer XT, or IBM Personal Computer
AT. A 4-switch module on the back of the card (accessible without
removing the card) specifies the display attached, which monitor is
primary when two displays are included in the system, and which mode (40
character or 80 character) the card will assume when the system is
powered on.
o The Graphics Memory Expansion Card can be plugged into a socket on the
side of the Enhanced Graphics Adapter. It does not require a system unit
expansion slot.
o Modules from the Graphics Memory Module Kit may be plugged into sockets
provided
Only one system unit expansion slot is required regardless of the amount of
graphics memory installed.
Installation instructions are supplied with all three options.
o This adapter may be co-resident with the Monochrome Display Adapter or
with the Color/Graphics Monitor Adapter. However, only one adapter may
drive a color monitor at any time, and only one may drive a monochrome
monitor.
PUBLICATIONS
These options are described in the following items:
o Unpack/Inventory Checklist
o Option Installation Instructions (for Guide to Operations binder)
o Problem Determination Procedures (for Guide to Operations binder)
o Technical Reference Manual Update, available through Update Information
Service for Options & Adapters Technical Reference Manual.
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o Hardware Maintenance & Service Manual Update, available through Update
Information Service for IBM Personal Computer, IBM Personal Computer XT
and IBM Personal Computer AT Hardware Maintenance & Service Manuals.
PROGRAMMING CONSIDERATIONS
o The option may be programmed at
several levels:
1. (Highest)--Using the newly announced Virtual Device Interface for
graphics output allows device-independent programs to be written
which can be transported between various systems with various
graphics hardware.
2. Programming at the PC BIOS level can produce more economical programs
(size and execution speed) and maintain a high degree of
compatibility with other PC systems.
3. Programming at the register level can obtain greatest flexibility of
use of all the features of this specific hardware, but will produce
programs incompatible with all other hardware.
o IBM Personal Computer BASIC functions "COLOR", "PAINT", and "SCREEN"
support compatibility modes only.
o A BIOS interface compatibility with the Color/Graphics Monitor Adapter
and with the Monochrome Display Adapter is provided. Existing programming
for these adapters not using the BIOS interface will probably not operate
correctly with this option.
Some existing application software uses attribute values not specified in
the IBM Technical Reference manuals (on Monochrome) to run without change
on either the 5153 or the 5151. These programs may have screens which
appear on a 5151 driven by the Enhanced Graphics Adapter with a different
shade of background than when driven by a Monochrome Display Adapter. In
some cases text becomes unreadable.
Existing text programs using 80 column modes with the 8 x 8 font today
will run without change and will automatically use the higher quality 8 x
14 font when driving the IBM 5154 Personal Computer Enhanced Color
Display.
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