MV-LED

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Credits display board in original MVS systems. Uses 2 7-segment displays to show the player's remaining credits.

Uses CRE401 RC arrays for inputs.

To copy here: http://mvs.gotwalls.com/images/a/a6/Mv_led2_hardware1_front.jpg, http://mvs.gotwalls.com/images/b/b2/Mv_led2_hardware1_back.jpg

Connections:

  • VCC
  • VCC
  • Clk
  • Digit 1 ABCD
  • Digit 2 ABCD
  • GND
  • GND

Digits are BCD-coded and controled by registers REG_LEDLATCHES($380031) and REG_LEDDATA($380041).

See also MV-ELA for the marquee board details.