The PSXJoy Interface 
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The completed prototype unit
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The development board, cabled to 2 logic analyzers
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Timing diagram of "expanded mode".  Top trace is clock (fire), bottom are data (up,down,left,right)
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The completed prototype unit
Viewed: 1695 times.
The development board, cabled to 2 logic analyzers
Viewed: 1457 times.
Timing diagram of "expanded mode". Top trace is clock (fire), bottom are data (up,down,left,right)
Viewed: 1288 times.
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Another shot at timing.
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Finally!  Managed to layout this board.  0.6 inches square!
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Board with copper ground pours
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Another shot at timing.
Viewed: 1372 times.
Finally! Managed to layout this board. 0.6 inches square!
Viewed: 1037 times.
Board with copper ground pours
Viewed: 1037 times.
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psxjoy-smd-board
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psxjoy-smd-board (poured)
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psxjoy-smd-board-top
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psxjoy-smd-board
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psxjoy-smd-board (poured)
Viewed: 1103 times.
psxjoy-smd-board-top
Viewed: 973 times.
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