Chapter 2 Installation
56
Step 10 Connect Onboard I/O,
Continued
J44 VGA Feature Connector
J44 is a VGA Feature connector or a pass-through connector. J44 is
a 26-pin dual-inline berg mounted on the motherboard. The pass-
through feature permits an 8514-compatible graphics coprocessor
adapter card to use the built-in VGA DAC (Digital to Analog
Converter) and VGA connector on the motherboard. When an 8514-
compatible graphics coprocessor card wants to drive the onboard
VGA, it activates the ESYNC# and ENVIDE0# signals to the
motherboard. The onboard VGA disables its VGA output buffers.
Video data from the 8514-compatible graphics coprocessor can then
drive the DAC.
The J44 pin placement is shown below.
The J44 pinout is:
Pin
Signal Description
Pin
Signal Description
Y1
Pixel Data 0
Z1
Ground
Y2
Pixel Data 1
Z2
Ground
Y3
Pixel Data 2
Z3
Ground
Y4
Pixel Data 3
Z4
ENVIDE0#
Y5
Pixel Data 4
Z5
ENABLE SYNC
Y6
Pixel Data 5
Z6
External Pixel Clock
Y7
Pixel Data 6
Z7
N/C
Y8
Pixel Data 7
Z8
Ground
Y9
Pixel Clock
Z9
Ground
Y10
Blanking
Z10
Ground
Y11
Horizontal Synch
Z11
Ground
Y12
Vertical Sync
Z12
N/C
Y13
Ground
Z13
KEY PIN
Содержание Super Voyager LPX
Страница 22: ...Super Voyager LPX ISA Motherboard User s Guide...
Страница 48: ...Chapter 2 Installation 42 Step 5 Install the Motherboard Continued...
Страница 67: ...Super Voyager LPX ISA Motherboard User s Guide...
Страница 172: ...Chapter 6 AMIBIOS Setup 166...
Страница 174: ...Chapter 6 AMIBIOS Setup 168...
Страница 178: ...Chapter 6 AMIBIOS Setup 172...
Страница 180: ...Chapter 6 AMIBIOS Setup 174...
Страница 190: ...Appendix A Upgrading Cache Memory 184...
Страница 200: ...Index 194...