The Enhanced Graphics Adapter (EGA) is the IBM PC computer display standard specification for a 16 simultaneous colors from a palette of 64 at a resolution of up to 640×350 pixels. EGA cards use the PC ISA bus and were available starting in 8-bit versions. The following schematics shows 9-Pin EGA (Enhanced Graphics Adapter) Connector and Pinout assignments.

9-pin EGA connector

Pin Name Function

1
2
3
4
5
6
7
8
9

GND
SR
PR
PG
PB
SG
SB
H
V

Ground
Secondary Red (Intensity)
Primary Red
Primary Green
Primary Blue
Secondary Green (Intensity)
Secondary Blue (Intensity)
Horizontal Sync
Vertical Sync

Further reading: Enhanced Graphics Adapter (EGA) on wikipedia



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