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kazanova225

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Hello guys I'm trying to fix a double dragon board
the board has a lot of corosion that I tried to clean and was somewhat successful
doing so I realized the Fujitsu MB7114h BPROM has one broken leg that I cannot fix (dont really have good soldering skill beginner at best)
I found the same Bprom online but I know or have what it take to program it. Can someone help with that
worse case scenario show how and what i need to do it

thanks
 
Yes, I converted this BPROM to a GAL16V8 so you can replace it.Simply program a GAL16V8 with my .JED, then tie pin 8 to pin 10 of the chip, lastly install the chip in the socket.
There is also another BPROM on the VIDEO board of Double Dragon but it's a different type and cannot be converted into a GAL device
 
I might go the mike arcade route, I dont own a programmer. I will probably in the future thanks everyone.
 
I would contact Mike's Arcade. Talk to him maybe he can send already programmed.
https://www.mikesarcade.com/cgi-bin/store.pl?sku=PROM82S129

He even has a link with a datasheet to the chip. My Eprom programmer doesnt seem to support the MB7114 but it does the equivalent and compatible 82S129.
I just talk to mike he has an equivalent for it. Now I need to find the image that needs to be burnt on it. I found a mame double dragon rom but I have no clues how to identify the file I need or even if I got the correct rom. Can you help or guide me to the right one.
 
I would contact Mike's Arcade. Talk to him maybe he can send already programmed.
https://www.mikesarcade.com/cgi-bin/store.pl?sku=PROM82S129

He even has a link with a datasheet to the chip. My Eprom programmer doesnt seem to support the MB7114 but it does the equivalent and compatible 82S129.
I just talk to mike he has an equivalent for it. Now I need to find the image that needs to be burnt on it. I found a mame double dragon rom but I have no clues how to identify the file I need or even if I got the correct rom. Can you help or guide me to the right one.
I would ask him to write it for you for a fee, that would save you a lot of trouble.

If you get the files of this game for mame, you will see that there are 2 PROMS inside the romset as can be seen in line 1881. Check here: https://github.com/mamedev/mame/blob/master/src/mame/drivers/ddragon.cpp#L1169

The one you need is probably the 21J-K-0, but you need to check if it's that one or the other one (21j-l-0), then open the right file in your eprom programmer and burn. Be careful, these chips are One Time Programmable, if you choose the bad file, you can discard the chip as it can't be erased.
 
If you get the files of this game for mame, you will see that there are 2 PROMS inside the romset as can be seen in line 1881. Check here: https://github.com/mamedev/mame/blob/master/src/mame/drivers/ddragon.cpp#L1169

The one you need is probably the 21J-K-0, but you need to check if it's that one or the other one (21j-l-0), then open the right file in your eprom programmer and burn. Be careful, these chips are One Time Programmable, if you choose the bad file, you can discard the chip as it can't be erased.
I will let him do it for me, as a matter fact I will probably try to find someone who can fix them for me. cause I reached my limit
 
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