forums.ps2dev.org Forum Index forums.ps2dev.org
Homebrew PS2, PSP & PS3 Development Discussions
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

VSH partitions in slim

 
Post new topic   Reply to topic    forums.ps2dev.org Forum Index -> PSP Development
View previous topic :: View next topic  
Author Message
moonlight



Joined: 26 Oct 2005
Posts: 567

PostPosted: Wed Jul 02, 2008 7:30 am    Post subject: VSH partitions in slim Reply with quote

I think this info could be of interest for those creating plugins for the vsh, so they know what they can expect of memory in vsh. The partitioning in the vsh in the slim is quite different, I knew about the 48 MB of user ram before but I hadn't listed the rest of partitions until today:

Kernel memory: 6 MB instead of 4, kernel memory ends at 0x88600000-1.
Volatile memory: 2 MB instead of 4.
User memory: 48 MB instead of 24
UmdCache: doesn't exist.
Me: I don't know if it is really for ME, but there is a partition of 8 MB, against the 4 used for ME in other modes.
Back to top
View user's profile Send private message
Pirata Nervo



Joined: 09 Oct 2007
Posts: 409

PostPosted: Wed Jul 02, 2008 7:33 am    Post subject: Reply with quote

hmmmm thanks for sharing :)
_________________

Upgrade your PSP
Back to top
View user's profile Send private message
J.F.



Joined: 22 Feb 2004
Posts: 2906

PostPosted: Wed Jul 02, 2008 8:07 am    Post subject: Reply with quote

I wonder if the volatile memory is different in game mode as well. I know that some programs (like dosbox) use the volatile memory.
Back to top
View user's profile Send private message AIM Address
moonlight



Joined: 26 Oct 2005
Posts: 567

PostPosted: Wed Jul 02, 2008 4:12 pm    Post subject: Reply with quote

Volatile memory is same in game mode, as it has to keep compatibility with fat, and the volatile lock and unlock functions can be used by games. In game mode, volatile memory is not used only for sleep mode, but also for utility dialogs, that's why they need 4 MB instead of just 2.
Back to top
View user's profile Send private message
J.F.



Joined: 22 Feb 2004
Posts: 2906

PostPosted: Wed Jul 02, 2008 4:25 pm    Post subject: Reply with quote

Good to know. I suspected it was probably the same or we'd have seen more problems from apps that used the volatile memory, but suspecting is not the same as knowing. :)
Back to top
View user's profile Send private message AIM Address
Display posts from previous:   
Post new topic   Reply to topic    forums.ps2dev.org Forum Index -> PSP Development All times are GMT + 10 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group