It is currently Wed Oct 23, 2019 8:04 am

All times are UTC - 7 hours





Post new topic Reply to topic  [ 6 posts ] 
Author Message
PostPosted: Fri Jun 17, 2011 5:45 pm 
Offline

Joined: Sat May 28, 2011 10:30 am
Posts: 97
I'm real interested in ordering a PowerPak, but from the product page, I saw:

"There may still be some sprite related graphics glitches on some NES systems."

In which cases do the glitches occur?
On which systems?


Also,
how often does the mappers file get updated?
Is it pretty stable so far for most games?


Top
 Profile  
 
 Post subject:
PostPosted: Fri Jun 17, 2011 5:48 pm 
Offline
User avatar

Joined: Wed Oct 15, 2008 11:50 am
Posts: 943
All I know for sure is that it does not work on most clone systems, which is why I never got one. Well, that an the fact that Compact Flash is a major for inconvenience me.


Top
 Profile  
 
 Post subject:
PostPosted: Fri Jun 17, 2011 5:50 pm 
Offline

Joined: Sat May 28, 2011 10:30 am
Posts: 97
I've got an original NES, so that shouldn't be a problem.

The description gives the impression that it might have glitches for even original hardware.


Top
 Profile  
 
 Post subject:
PostPosted: Fri Jun 17, 2011 6:07 pm 
Online

Joined: Sun Sep 19, 2004 11:12 pm
Posts: 21644
Location: NE Indiana, USA (NTSC)
As I understand it, the sprite glitch comes from early units that had noise issues related to bus capacitance. Later units used resistors on certain data lines, which fixed OAM DMA.

But this notice caused me a lot of angst when I ran into a problem with sprite flicker a couple years ago when I was working on LJ65. I had someone try it with an EPROM programmer, and it turned out to be not the PowerPak's fault at all but a newly discovered glitch in the PPU's OAM refresh.


Top
 Profile  
 
 Post subject:
PostPosted: Fri Jun 17, 2011 7:20 pm 
Offline
User avatar

Joined: Sat Feb 12, 2005 9:43 pm
Posts: 11418
Location: Rio de Janeiro - Brazil
AFAIK, the sprite glitches were fixed for good. I bought one of the early carts and indeed there were sprite issues, but after modding it I have never seen such problems again. The current carts already come with the fix, and I have never heard of anyone complaining about sprite corruption.


Top
 Profile  
 
PostPosted: Sat Jun 18, 2011 11:17 am 
Offline
User avatar

Joined: Wed Dec 06, 2006 8:18 pm
Posts: 2832
shawnleblanc wrote:
Also,
how often does the mappers file get updated?
Is it pretty stable so far for most games?


Not very often. It's very stable for all games that work. It's not some unsound hardware, it works very well. But you need a real NES console.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 6 posts ] 

All times are UTC - 7 hours


Who is online

Users browsing this forum: No registered users and 6 guests


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