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Redherring32 / OpenTendo

An Open-Source HardWare (OSHW) recreation of the original 1985 front-loading NES Motherboard
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R13 - Wrong value ? #5

Closed pep3175 closed 3 years ago

pep3175 commented 3 years ago

I wasn't able to boot up any game until I change R13. On the schematics and on the board silkscreen you mention 1.2k for R13.

On my original board I have 150k for R13.

I managed to boot it up with 150k.

pep3175 commented 3 years ago

I just checked your picture : https://camo.githubusercontent.com/07663c0c9fcb0e95c5505d66159466bb3d674cb9014f4548a6f51fd7f6c98c54/68747470733a2f2f692e696d6775722e636f6d2f6e515036426f4d2e6a7067

image

It seems you also use a 150k resistor for R13

Redherring32 commented 3 years ago

I re-checked everything and you are correct, that is indeed supposed to be 150K. I have put up a commit that fixes that, and I have updated the schematic/BOM/gerbers in the V1.2 release to fix this as well.

Thank you for bringing this to my attention!