derekb
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I read somewhere that some SNROM boards (Shinren the ruler was the example i think) behaved strangly with NTRQ. I've built 6 NTRQ carts to date and all have worked without issue aside from dirty contacts requiring a lil jiggling in the slot to get a proper connection. I guess it's possible the SRAM has junk data which is messing up on load, you could try pulling the battery and waiting for the chip to drain. Are you using a 27C010? If you're using a 27C101 the pinout is slightly different, I believe you have to bridge pins 31 and 32 in order for those to work properly but don't quote me on that.

for reference here's this pcb:

pin 31 is lifted but not attached, should've just clipped it

Last edited by derekb (Aug 20, 2012 5:37 pm)

TSC
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Milwaukee, WI

Thanks for the quick reply!

Yes, I am using 27C010 in several donors. I've tried Bard's Tale, Shingen The Ruler, NES Open, Ultima Exodus, and one other I am probably forgetting at the moment - all with the same behavior. I'll test the battery removal next...I never thought of doing that.

I should mention I have similar results when using PR8/Pulsar in donors as well, although they barely even turn on.

derekb
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are you 100% positive your chips are flashed correctly? have you built donors prior to this? You did strip the NES header prior to flashing right?

Last edited by derekb (Aug 20, 2012 5:54 pm)

derekb
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TSC wrote:

Thanks for the quick reply!

Yes, I am using 27C010 in several donors. I've tried Bard's Tale, Shingen The Ruler, NES Open, Ultima Exodus, and one other I am probably forgetting at the moment - all with the same behavior. I'll test the battery removal next...I never thought of doing that.

I should mention I have similar results when using PR8/Pulsar in donors as well, although they barely even turn on.

I always use Zelda's for donors, fwiw

TSC
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Milwaukee, WI
derekb wrote:

are you 100% positive your chips are flashed correctly? have you built donors prior to this? You did strip the NES header prior to flashing right?

Yes, yes aaaand yes. I'll try a Zelda cart out of sheer boredom if I can find one for cheap locally.

Here's are some thoughts on the matter from the other thread fwiw. Perhaps there's a simple solution I'm missing here.

ne7 wrote:

It's to do with initialisation code on h/w seems to not be showing on the Famicom boards (as mine are normally built on the famicom h/w) but is showing up on the NES boards this time (we had a little similar issue with PR8/Pulsar like this before but nailed it after some testing! smile

ne7 wrote:

I’m beginning to think this is all tied to the Famicom’s lack of a CIC security chip and differences to the way the two machines initialise data – the reason PR8 might not be resetting is very likely related to this, I’m going to grab LFT next time I see him online and pick his brains (I warned him already hehe) about it as if anyone can shed light on anything h/w related its most probably him *Grin*

Neil; I repeated the steps in my guide and built yet another PR8 cart for Famicom in the interim so the Famicom side of things checks out just fine – we just have to poke around a bit more on the NES side, it's super weird but I'm sure we'll get to the bottom of it smile

Fuck, does this count as crossposting?

derekb
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hmmm very odd cuz I've had 0 issues with NTRQ on carts

could possibly be related to the speed of the chips you're dropping in, farfetch though

Last edited by derekb (Aug 21, 2012 2:48 pm)

derekb
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the OP cart is obviously sold, but I can create new carts if needed, pm me if interested in NTRQ