MV-LED: Difference between revisions
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[[File:mv-led2.jpg|thumb|MV-LED2. Picture courtesy of [[http://www.mvs-scans.com MVS-Scans]].]] | [[File:mv-led.jpg|thumb|MV-LED board. Picture courtesy of [[http://thearcadeboneyard.com TheArcadeBoneyard]].]] | ||
[[File:mv-led2.jpg|thumb|MV-LED2 board, same components, different size. Picture courtesy of [[http://www.mvs-scans.com MVS-Scans]].]] | |||
Credits display board in original [[MVS systems]]. Uses two 7-segment displays to show the player's remaining [[credits]]. | Credits display board in original [[MVS systems]]. Uses two 7-segment displays to show the player's remaining [[credits]]. | ||
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Uses [[CRE401]] RC arrays for inputs. | Uses [[CRE401]] RC arrays for inputs. | ||
Pinout: | |||
*VCC | *VCC | ||
*VCC | *VCC | ||
Revision as of 16:16, 22 October 2011
Credits display board in original MVS systems. Uses two 7-segment displays to show the player's remaining credits.
Uses CRE401 RC arrays for inputs.
Pinout:
- 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). Clock on rising edge ?
See also MV-ELA for the marquee board details.
Connection to the MVS board visible in [page 5 of the schematics]
