MV-LED: Difference between revisions
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*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. | [[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
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.
Connection to the MVS board visible in [page 5 of the schematics]
