Chip pinouts on non-Nintendo Famicom carts
Time to sail lesser charted waters... the next cart I plan to install a translation into is Minelvaton Saga, one of Taito's RPG releases that happens to use one of their own mappers versus Nintendo's MMCs. Anywho, what I am here to ask is if boards such as this use the "standard" mask ROM pinout, or does each manufacturer have their own set ways. I know Konami does their own thing, but what about the rest? Anyone had a similar experience reproducing these types of carts?
http://bootgod.dyndns.org:7777/profile.php?id=3955 <--------- Cart and data
What's gonna be neat is stuffing a 32 pin EPROM into a 28 pin MASKROM socket. Doesn't seem too hard, just lose the unused pin, both programming pins and tie OE to ground as usual.
Any help or pointers would rule all. Either way, I will post my results to the Brewery. Thanks!
http://bootgod.dyndns.org:7777/profile.php?id=3955 <--------- Cart and data
What's gonna be neat is stuffing a 32 pin EPROM into a 28 pin MASKROM socket. Doesn't seem too hard, just lose the unused pin, both programming pins and tie OE to ground as usual.
Any help or pointers would rule all. Either way, I will post my results to the Brewery. Thanks!
Comments
It may be both, since one chip is 28-pin and the other is 32 though but both are the same size. Not sure 100%, but I know Konami games use the same Nintendo mask ROM pinout though.
last I checked nintendo maskroms have different pinouts depending on the size of the maskroms.
It may be both, since one chip is 28-pin and the other is 32 though but both are the same size. Not sure 100%, but I know Konami games use the same Nintendo mask ROM pinout though.
If I omit VPP, PGM, the unused pin and tie OE to ground, that leaves 28 pins to be allocated. Everything on that front works itself out from there.
What I really want to know is if Taito used Nintendo's pinouts on their MASKROMs or if it is something completely different just because they could. I could always take a multimeter and go from chip pin to cart/mapper pin, but that is a LOT of work.
And that link you linked to marvelous is an 8KB ROM. Those were never rewired, as it's under 64KB.
And I found this on bootgod's PCB list, looks like it needs some minor rewiring. Hope you can take it after this...
http://bootgod.dyndns.org:7777/pcb.php?PcbID=227+494+443+449+450+452+582+465
I dunno, how many companies pulled a Konami and used Nintendo pinouts even for famicom games? Just because the board doesn't say Nintendo doesn't mean that they didn't follow those "rules".
And that link you linked to marvelous is an 8KB ROM. Those were never rewired, as it's under 64KB.
And I found this on bootgod's PCB list, looks like it needs some minor rewiring. Hope you can take it after this...
http://bootgod.dyndns.org:7777/pcb.php?PcbID=227+494+44...
I never considered it being under 64K good point. My apologies.
Booyah
EDIT: http://www.dz863.com/downloadpdf-vdmpjucfzhxg-LH231100BD-20.pdf
CHR MASKROM datasheet and pinouts.
http://www.romhacking.net/translations/1394/
One thing to note is that the translation patch for this particular game doubles the size of the PRG binary to 512K from its stock 256K. Keep that in mind when buying your chips!
Instructions:
First and foremost: http://bootgod.dyndns.org:7777/imagegen.php?ImageID=10206&width=600
See the little blue capacitor in the middle-left of the board? He is in the way of the EPROM you need to install (the EPROM is 32 pin versus the MASKROM's 28). Remove that capacitor and resolder it on the opposite side of the board.
PRG (You will need a 2M chip for this)
Lift pins 1, 2, 24, 30, 31 and 32
When you insert this chip, there will be four pins overhanging the socket on the left side. Basically, match up the ground pins and install it that way.
Solder pin 32 to hole 28 (VCC)
Solder pin 2 to hole 22 (A16)
Solder pin 24 to GND
Solder pin 30 to pin 47 of the X1-005 chip (A17)
CHR (You will need a 1M chip for this)
Lift pins 1, 2, 22, 24, 30 and 31
Solder pin 2 to hole 24 (A16)
Solder pin 22 to hole 31 (CE or CHR /A13)
Solder pin 24 to hole 2 (OE or CHR /RD)
EDIT: (Yeah, not my best solderjob, but it works!)
what the heck is that massive chip above the eproms? Looks like the vr6/7
*edit* the X1-005....sounds explosive!
what the heck is that massive chip above the eproms? Looks like the vr6/7
That is the Taito X1-005 mapper chip.
what the heck is that massive chip above the eproms? Looks like the vr6/7
That is the Taito X1-005 mapper chip.
In other words no way in hell you'd find a nes donor for this cart
is Minelvaton Saga: Ragon no Fukkatsu the same game or is this a different one? Gonna look this game up..
can't find any footage of silva saga for nes or famicom on youtube....someone must upload!!
In other words no way in hell you'd find a nes donor for this cart
is Minelvaton Saga: Ragon no Fukkatsu the same game or is this a different one? Gonna look this game up..
can't find any footage of silva saga for nes or famicom on youtube....someone must upload!!
No US game used that mapper.
Yes, the game is Ragon no Fukkatsu.
does this game have the same idol system as Silva Saga? if it does I'll have to make myself one of these.
Not entirely sure. I know there are "idols" in there, though.
I checked all the connections described by Sabz5150 and I'm doing exactly the same, so someone knows the reason for this kind of behavior?
Thanks.......
Originally posted by: Sabz5150
Success!
Instructions:
First and foremost: http://bootgod.dyndns.org:7777/im...
See the little blue capacitor in the middle-left of the board? He is in the way of the EPROM you need to install (the EPROM is 32 pin versus the MASKROM's 28). Remove that capacitor and resolder it on the opposite side of the board.
PRG (You will need a 2M chip for this)
Lift pins 1, 2, 24, 30, 31 and 32
When you insert this chip, there will be four pins overhanging the socket on the left side. Basically, match up the ground pins and install it that way.
Solder pin 32 to hole 28 (VCC)
Solder pin 2 to hole 22 (A16)
Solder pin 24 to GND
Solder pin 30 to pin 47 of the X1-005 chip (A17)
CHR (You will need a 1M chip for this)
Lift pins 1, 2, 22, 24, 30 and 31
Solder pin 2 to hole 24 (A16)
Solder pin 22 to hole 31 (CE or CHR /A13)
Solder pin 24 to hole 2 (OE or CHR /RD)
EDIT: (Yeah, not my best solderjob, but it works!)
Sure this may be an old post, but I'm hoping someone reads this.
I've done quite a handful of NES carts, but I still consider myself a bit of a NOOB when it comes to the tech aspects.
Anyway, I wanted to make my first english patched famicom cart and I didn't wanna be a jerk and just make a whole new post, hoping I could find the information on my own.
I wanted to do Dragon Scroll, which is a Konami Mapper 23 VRC2 board
Problem is, I haven't been able to find a pinout for it. It uses 28pin 128k roms, so I'm going to have to do pretty much what you did to this one, which is why I think I'm on the right track.
So do you know if the pinouts are the same as this board here?
And on the picture, you've got a wire running across the mapper. Is that the ground or something?
Any help would be awesome.