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panel:
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X = don't care and mind
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OE = output enable
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DATA = data channel
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STR = strobe (clear registers)
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CLK = clock
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r = red channel
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g = green channel
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+---------------------
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| X     oo  X
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| OEr   oo  STRrg
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| DATAr oo  CLKrg
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| X     oo  X
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| X     oo  X
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| X     oo  X
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| X     oo  X
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| X     oo  X
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| X     oo  X
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| X     oo  X
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| X     oo  X
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| X     oo  X
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| .............
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| .. led blocks
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| .............
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| X     oo  VCC
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| OEg   oo  GND
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| DATAg oo  GND
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| X     oo  led-row9
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| X     oo  X
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| X     oo  X
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| X     oo  X
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| X     oo  X
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| X     oo  X
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| X     oo  X
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| X     oo  X
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| X     oo  X
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+---------------------
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clpd pads: (cpld unsoldered)
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############### panel edge ##############
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          | | | | | | | | | | |
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   A2  --   \         \         --
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   A0  --    `-A1      `-VCC    --
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       --                       --
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       --                       --
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       --                       --
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       --                       --
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       --                       --
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       --                       --
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       --               (A3)    --  E3
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       --                ~E1    --
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       --                 |     --
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          | | | | | | | | | | |
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                    \         `- ~E2
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                     `-GND
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Connect ~E2 to GND and E3 to VCC and use ~E1 as A3.
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