RISKY MSX Cart - Rev 1 (Beta Release)

[arkadiusz.makarenko]

New PCB arrived

PXL_20250224_131725078.MP.jpg (155.84 KiB) Viewed 1911 times

[arkadiusz.makarenko]

I have it working now.

It is time to calculate opamp operation.

[arkadiusz.makarenko]

First try with opamp and few caps. It is step in right direction.

[arkadiusz.makarenko]

Few small tweaks and I am really happy with the outcome.

[PhilC]

Few small tweaks and I am really happy with the outcome.

That music sounds so much better now, well done.

[arkadiusz.makarenko]

From what I can hear I don't have to worry about boosting bass on SCC circuit, but it looks like it would benefit from suppressing high frequencies.
On some PCB builds I can hear slight hiss when working with USB device.

[arkadiusz.makarenko]

I have built whole batch of them. Not too bad, just I don't know If I want to do it too often.

PXL_20250301_151830184.jpg (159.06 KiB) Viewed 1816 times

[arkadiusz.makarenko]

New firmware released. It fixes audio glitches and background noise which was annoying me on flashing pages
It was present only on some boards.Fixed by simply by always configuring DAC , not only for mapper that uses it.

[PhilC]

Cool, will test out tomorrow with the new board

[PhilC]

So far so good with V2.02. There was some noise as you'd said before I did the firmware update and that's gone now.

Testing still in progress but this is great, well done.