You are not logged in.
Lost Password?


Register To Post



 Bottom   Previous Topic   Next Topic

#1
VB GamePaks with expanded RAM?
Posted on: 12/7 3:49
VB Gamer
Joined 2016/3/13
37 Posts
Long Time User (2 Years)
Nintendo's technical docs say that GamePaks can provide extra RAM in the $06000000-$06FFFFFF memory region.

So ... I'm wondering, did any shipped games actually use that memory region? Perhaps for battery-backed saves?
Top

#2
Re: VB GamePaks with expanded RAM?
Posted on: 12/7 15:54
PVB Elite
Joined 2008/12/28
Slovenia
618 Posts
Highscore Top ScoreHighscore Top ScoreCoderContributor10+ Game RatingsLong Time User (9 Years) App CoderPVBCC 2010 EntryPVBCC 2013 Entry
Yes. On those cartridges, as well as the FlashBoy Plus, there are 8 kilobytes of SRAM, accessed as halfwords so every other byte is valid.
Top

#3
Re: VB GamePaks with expanded RAM?
Posted on: 12/7 20:32
VB Gamer
Joined 2016/3/13
37 Posts
Long Time User (2 Years)
OK, thanks! I guess that I'll find another way to increase the amount of the VB's RAM (in the mednafen emulator, for debugging during development).
Top

#4
Re: VB GamePaks with expanded RAM?
Posted on: 12/7 23:25
PVB Elite
Joined 2003/7/26
USA
1452 Posts
PVBCC EntryCoderContributorSpecial AchievementTop10 PosterHOTY09 EntryLong Time User (15 Years) App Coder20+ Game RatingsPVBCC 2013 Entry
It's possible to put 16-bit-wide RAM there (or in the Expansion Area at 0×04000000-0x04FFFFFF) and run code from it.
Top

#5
Re: VB GamePaks with expanded RAM?
Posted on: 12/8 20:48
VB Gamer
Joined 2016/3/13
37 Posts
Long Time User (2 Years)
This would only be for development/debugging usage, and not for actual cartridges.

It's questionable whether it's even needed on the VB, since you can just make the cartridge image bigger ... but it never hurts to have more ram for debug traces.

Putting it in the $04000000-$04FFFFFF region seems like it should be pretty safe.
Top

 Top   Previous Topic   Next Topic


Register To Post