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you forgot the backup RAM :)

https://x.com/leonkiriliuk/status/1723491051741106590?s=46&t=uIdVdwLG8oBD2HjwcL2evw Throwing rocks at Raz is pretty lame. You can always use the original bios or make your own?!

Not really a question of reverse engineering, since the neo-sma asic used for bankswitching the P rom was documented a while ago by hpman. Compared to the other 3 neo-sma games Garou never had a release on a different pcb (BK1), so you're stuck dealing with a 8MB P rom plus the neo-sma dump file...

Well it would take that all NOR flash lines to be routed through the CPLD in order to use boundary scan. And even so, reprogram a NOR flash that big through boundary scan it would take up to 90 hours.

I would remove XenoCrisis from that rom pack, it's an indie game still being sold by BitmapBureau ...

If you don’t mention the price you’re willing to pay no one will consider to sell his NTmini.

That's amazing @ack where you took the neodiag bios after the disassembly. @maki was kind enough to sell me one of his extra pcb's, looking forward to try it myself.

it is, some traces go under the asic. Should go to neo-b1 and as04.

https://wiki.neogeodev.org/index.php?title=LSPC2-A2

It seems to me that it's a problem with the PCK1 clock from the LSPC for the C ROM latches. So check the traces from that pin.

it's the same address since it only affects v1. You either split the patched vroma0 or hex edit v1.

Oh, what I've meant is that in the source code of the Flashcat software you can check flashmemory.vb to see the whole NOR flash definitions and if yours aren't there you can add them.

For U2 you'd need the TSOP48 NAND adapter, their NOR one won't work. There are more adapters for the flashcat Mach/Xport here. Also for the undetected NOR flash, you can use the source code for the flashcat software to add support yourself.

Thanks for this port. It's working fine on Analogue Pocket as well.

I suspect it's a neo-buf issue. Check the board if one of the neo-buf ICs was replaced with a repro or a bypass flex.

i think the problem is that you cancatenate the two proms into a 9MB file. It should be done as with garou, kof2003, etc and just rename them to prom and prom1

Why not use Furrtek's PCM repro? https://www.tindie.com/products/furrtek/pcm-chip-replacement/

broken data line or worse case scenario - bad neo-257/neo-zmc2

Most likely it has a bad Altera CPLD. Your best bet is moving all ROMs from the SF1 board to a BK1 one replacing P1 with a 27C160 containing the decrypted ROM.

Check the outputs of the Neo-257 at J-2.5 and K-2.5 with a logic probe. Once you rule that out, it's definetly the neo-zmc2 or a trace that goes to it from the neo-257. For the 2nd slot audio, it's the unibios 4.0 the isssue... try the stock bios.