Twinkle Stars Sprites MVS Graphical glitch

Hakeshu

n00b
Joined
Oct 28, 2016
Posts
27
Hello guys,

I don't know if this is an ok post because it's about a reproduction cart, and surely hope you guys could gimme some help.

I just made a TSS cart for me using a donor cart that had some busted maskroms. Did it for learning and to grow a little my collection (atm 82 games and only 3 bootlegs/repros). Since it's and expensive cart I give it a shot, and after some days working on it I finally managed to make it run almost flawlessly. Sound is 100%, but as you can see in the pictures I got a strange graphical glitch on the life bars, everything else is ok.

I Used 2 27c322 (C1 and C2), 2 27c800 (C3 and C4), 27c1001 (M1) and 27c010 (S1).

I tried to change some jumpers but it only gets worse. Its not the board (tried others from my own collection), and not the romset (all roms matching CRC).

I really don't know how to fix this.

Here's the page I used as a guide http://www.wolfgangrobel.de/mvs/twinspri.htm

tss1.jpeg
tss2.jpeg
tss3.jpeg
tss4.jpeg
 

BIG BEAR

SHOCKbox Developer,
20 Year Member
Joined
Dec 14, 2001
Posts
8,230
Did you do the pin 2 & 24 swap for Jedec @ s1 location?
BB
 
Last edited:

Hakeshu

n00b
Joined
Oct 28, 2016
Posts
27
Did you do the pin 2 & 24 swap for Jedec @ s1 location?
BB

Did the swap and boom working like a charm.

tss5.jpg

Thanks a lot BIG BEAR. Really happy to add this beauty to my collection.

Now time to work on the next project: Power Spikes 2
 

BIG BEAR

SHOCKbox Developer,
20 Year Member
Joined
Dec 14, 2001
Posts
8,230
27c1000 is a straight drop,no wiring.You use an adapter or wiring with the programmer with the 1000. HN27c301G is a 1000 equivalent.
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