MV-LED: Difference between revisions

From NeoGeo Development Wiki
Jump to navigation Jump to search
mNo edit summary
mNo edit summary
Line 14: Line 14:
*GND
*GND


Digits are BCD-coded and controled by registers '''REG_LEDLATCHES'''($380031) and '''REG_LEDDATA'''($380041).
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.
See also [[MV-ELA]] for the marquee board details.


[[File:mv-led2_schem.jpg|thumb|MV-LED2 board incomplete schematic.]]
[[File:mv-led2_schem.png|thumb|MV-LED2 board incomplete schematic.]]


Connection to the MVS board visible in [[http://wiki.neogeodev.org/index.php?title=File:Mv1fs-page5.jpg|in page 5 of the schematics]]
Connection to the MVS board visible in [[http://wiki.neogeodev.org/index.php?title=File:Mv1fs-page5.jpg|in page 5 of the schematics]]

Revision as of 18:00, 5 October 2011

MV-LED2. Picture courtesy of [MVS-Scans].

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.

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). Clock on rising edge ?

See also MV-ELA for the marquee board details.

MV-LED2 board incomplete schematic.

Connection to the MVS board visible in [page 5 of the schematics]