HP 900 Series - Figure 3-21. Typical Video Board Block Diagram

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PLANE 1
E
DISPLAY
.ONE PER
MONOCHROM
BOARD
CONTROLLER.
4
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....-..-
fRAME
....-..-
BUffER
RED
GRN/SYNC ••
BLUE
....-..-
CONTROLLER
• .cOMPOSITE VIDEO
ON MONOCHROME BOARDS.
RED/BLUE/GREEN ONLY ON
COLOR BOARDS.
PLANE 2
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DISPLAY
CONTROLLER.
4~
PIXEL BUS
ADDRESS BUS
DATA BUS
DISP.
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HP 98547A ONLY
PLANE 3
PLANE 4
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PLANE 5 PlANE 6
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4
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4
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DISPLAY DISPLAY
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DISPLAY DISPLAY
CONTROLLER. CONTROLLER.
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CONTROLLER. CONTROLLER.
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