MV-LED: Difference between revisions
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*GND | *GND | ||
Digits are BCD-coded and controled by registers | Digits are BCD-coded and controled by registers {{Reg|REG_LEDLATCHES}} and {{Reg|REG_LEDDATA}}. Clock on rising edge ? | ||
See also [[MV-ELA]] for the marquee board details. | See also [[MV-ELA]] for the marquee board details. | ||
Revision as of 01:02, 14 August 2012
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 and REG_LEDDATA. 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]
