rayik

Use DosBox on your 64bit win machine. See here

I'd recommend you socket at least one board. After burning ROMs use the socketed board to make sure they work before you solder them in. I also found that a small percentage of boards are just bad.

Super System 3 for NEC PC Engine \ Turbografx16

Getting one for Christmas. Right now its under the tree

All resisters are correct values. I just double checked with digikeys resitor five band color calculator The diodes I used were 1N4148TR (Digikey part #: 1N418FSCT-ND) I also bought 1N4148TR (Digikey part #: 1N4148FSCT-ND) but don't know if swapping them out will make a try. I do have a couple of other 5200s. However we have only modern flat panels and there is no way to connect them to see the video. (The one I'm testing with has a Sophia rgb adapter installed and connects to hdtv through OSSC) I did try doubling up the .11uf capacitor as suggested by Swami and that had no effect. At this point I don't know what to do.

Still not working, but getting there. Turns out I forgot to install the 0.1 uf capacitor on both boards. Installing them still gives a "stuck" controller but I can change directions by moving the stick. When I get time I'll play with the pots. Values "at rest" with cap installed is 24 and 24 for both adapters with all pots set at 265K resistance.

Adjusted posts to 265K. (All 4 were at 475K initially). Did not work Got Pete's test cart running on AtariMax using your instructions. Values show extreme left and extreme up on each adapter. interestingly values were the same for the two even though I forgot to reinsert the DG413DHZ in one of the adapters. Value is 9 9. (Cannot get photos to post correct. Either upside down or rotated left) I checked all the resisters with a multimeter whle I had the DG413DHZ out. They were what is on the BOM.

Acrylics mailed today. Enjoy

Glad to sent out to those who make, build and troubleshooting this device