It is currently Fri Dec 14, 2018 6:50 pm

All times are UTC - 7 hours



Forum rules


1. NO BLATANT PIRACY. This includes reproducing homebrew less than 10 years old, with the exception of free software.
2. No advertising your reproductions, with the exception of free software.
3. Be nice. See RFC 1855 if you aren't sure what this means.



Post new topic Reply to topic  [ 23 posts ]  Go to page Previous  1, 2
Author Message
 Post subject:
PostPosted: Fri Oct 07, 2005 9:16 am 
Offline

Joined: Sat Sep 17, 2005 12:26 pm
Posts: 278
why does it say Zelda is a SNROM. shouldnt it be a UNROM?

Bregalad wrote:
coinheaven wrote:
wow that is an awesome list.

Oh my god, it isn't. This list looks very unaccurate. This place seems better : http://www.parodius.com/~veilleux/boardtable.txt


Top
 Profile  
 
 Post subject:
PostPosted: Fri Oct 07, 2005 11:46 am 
Offline
User avatar

Joined: Sun Sep 19, 2004 10:59 pm
Posts: 1440
coinheaven wrote:
why does it say Zelda is a SNROM. shouldnt it be a UNROM?


Because Zelda 1 IS SNROM!

_________________
Quietust, QMT Productions
P.S. If you don't get this note, let me know and I'll write you another.


Top
 Profile  
 
 Post subject:
PostPosted: Fri Oct 07, 2005 3:24 pm 
Offline

Joined: Sat Sep 17, 2005 12:26 pm
Posts: 278
WHY!???

Quietust wrote:
coinheaven wrote:
why does it say Zelda is a SNROM. shouldnt it be a UNROM?


Because Zelda 1 IS SNROM!


Top
 Profile  
 
 Post subject:
PostPosted: Fri Oct 07, 2005 3:34 pm 
Offline
User avatar

Joined: Sun Sep 19, 2004 10:59 pm
Posts: 1440
Because Zelda 1 uses an MMC1, required for it to handle SAVED GAMES; a standard UNROM board is not capable of supporting extra memory at $6000-$7FFF, while an SNROM board is designed exactly for this purpose.

_________________
Quietust, QMT Productions
P.S. If you don't get this note, let me know and I'll write you another.


Top
 Profile  
 
 Post subject:
PostPosted: Mon Oct 10, 2005 7:48 am 
Offline

Joined: Sat Sep 17, 2005 12:26 pm
Posts: 278
oh ok, so does anybody know how to check for this? i use VirtuaNES memory viewer, but i dont know how to check for it. some games it has numbers like 5A and sometimes there are just FF's all across from $6000 $7fff. any help on this would be great!

Quietust wrote:
Because Zelda 1 uses an MMC1, required for it to handle SAVED GAMES; a standard UNROM board is not capable of supporting extra memory at $6000-$7FFF, while an SNROM board is designed exactly for this purpose.


Top
 Profile  
 
 Post subject:
PostPosted: Mon Oct 10, 2005 10:06 am 
Offline
User avatar

Joined: Fri Nov 12, 2004 2:49 pm
Posts: 7604
Location: Chexbres, VD, Switzerland
Well, VirtuaNES has a header viewer where the mapper number is shown. So if it says MMC1, it's MMC1, not UNROM. If it says UNROM, it is most likely a UNROM game, but it can also be a hacked version of a MMC1 game, like FF2 [hM02]. Just see what GoodNES says about your ROM. If it says [hMxx], then you have the wrong mapper.
The memory viewer trick was to know if a game that has not battery has SRAM or not, so you can see if it uses SRAM or not (if it's all $ff, there is no SRAM). Scince both Zelda and FF2 uses battery, this means that there is SRAM anyway.

_________________
Life is complex: it has both real and imaginary components.


Top
 Profile  
 
 Post subject:
PostPosted: Mon Oct 10, 2005 10:39 am 
Offline

Joined: Sat Sep 17, 2005 12:26 pm
Posts: 278
ok i get it now, if it has a battery then it has to have SRAM, so this would be all the zeros. but if it doesnt then it is all $ff. is that correct? i needed this info because i am checking the games for SRAM that dont have a battery to determine what board they would need. Thanks

Bregalad wrote:
Well, VirtuaNES has a header viewer where the mapper number is shown. So if it says MMC1, it's MMC1, not UNROM. If it says UNROM, it is most likely a UNROM game, but it can also be a hacked version of a MMC1 game, like FF2 [hM02]. Just see what GoodNES says about your ROM. If it says [hMxx], then you have the wrong mapper.
The memory viewer trick was to know if a game that has not battery has SRAM or not, so you can see if it uses SRAM or not (if it's all $ff, there is no SRAM). Scince both Zelda and FF2 uses battery, this means that there is SRAM anyway.


Top
 Profile  
 
 Post subject:
PostPosted: Mon Oct 10, 2005 11:20 am 
Offline
User avatar

Joined: Fri Nov 12, 2004 2:49 pm
Posts: 7604
Location: Chexbres, VD, Switzerland
If would not be all zeroes, it would be the data the games writes to the SRAM chip.
The board is identical regardless of if there is battery or not (for example both Kid Icarus and Zelda are SNROM, but only Zelda have a battery, Kid Icarus's slot for battery and two diodes are just empty).

_________________
Life is complex: it has both real and imaginary components.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 23 posts ]  Go to page Previous  1, 2

All times are UTC - 7 hours


Who is online

Users browsing this forum: No registered users and 1 guest


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 post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group