Recent content by maki

There is an ebay seller in Spain/EU for some original NeoGeo ASIC, called "tecknoservices". Ali is selling some as well but won't ship to europe.

@TSMD keep trying with the neo-geo forum account, sometimes it takes multiple attempts. Those HCT245 /244 are buffers, meaning they keep the signal stable (look up "fan out for ICs" for details). If you look at the IC pin out, the right side has the inputs (P1.. P2..), the direction of the...

Well the AES version can be quite expensive, the MVS is a few hundred bucks, similar for other games that aren't on the 161-in-1. Personally I'm convinced that many go the consolized MVS route only to save money on the actual games, here in Europe one can get an JPN AES for 350 - 550 Euros...

Awesome info and a very impressive project! So a Full Set won't be a thing due to limited space. Personally, I don't care about KoF at all, and they are (over-) present on the 161-in-1 modules. Some titles are currently not available to people without deep pockets or that got really lucky...

Best way to make people copy you, is to be successful and open source :) I'm really in awe of this project and all the effort people put in and what was already achived! :)

you can find the instructions here: https://www.jamma-nation-x.com/jammax/tutorials.html can't deep link on that site, so you need to navigate it

Can you show more pictures? Are those glitches moving around the screen? Are all slots affected? You get graphic glitches in the crosshatch screen as well, without the top board? There is a few different 4 slots around, it might help to know which one this is.

lots of PCBs are rotten, not just MVS, but also AES there is something in either the solder mask that makes the traces corrode, or its because the PCBs weren't cleaned well enough after soldering there is an abundance of 2nd gen custom ASIC (as used by the AES3-5) available, no worries about...

@Vortex dos the V3 support the Pick'N'Mix of the UniBios 4.0? the V1 does FWIW

The LSPC2-A2 is harder to solder than the NEO-B1 as it has a finer pitch between the pins. I would not recommend to practice that on a MVS/AES tbh, there is a learning curve, things will break in the beginning. You could practise on MegaDrives/Genesis, the ASIC/VDP in there are quite similar to...

that thing likes to die partially on multi slot MVS IIRC @hatmoose had that problem on a 2 slot, maybe he can share some experiences on how to detect it as culprit?

you're just checking to the next via, check the whole path, or just a jumper wire for testing to the point where it should go

Try the jumper

so 0404 is 0000010000000100 in binary/dual sometimes documentation starts at 0, sometimes at 1, watch out for that lets hav a look at the lower byte first: 00000100 thats either A2 (counting from 0) or A3 (counting from 1), that would be pins 176 on the LSPC2-A2, the trace looks at bit...

Have you checked that there is no shorts between the data lanes (IO)?