It is currently Thu Apr 26, 2018 6:12 pm

All times are UTC - 7 hours



Forum rules


Related:



Post new topic Reply to topic  [ 4 posts ] 
Author Message
PostPosted: Fri Apr 06, 2018 11:07 pm 
Offline

Joined: Fri Feb 16, 2018 5:52 am
Posts: 4
Location: Ukraine
Now I add Offset-per-tile mode in my FPGA SNES, for now I did Offset-per-tile only for BG1 in BGMODE 2 (it works in Tetris Attack, Battletoads in battlemaniacs and SNES burn-in test rom), and I have a few questions.

As I understand, scrolling values in BG3 common to BG1 and BG2, but read 2 times: one for BG1 with BG1HOFS, and one for BG2 with BG2HOFS. Also, I think that in hardware reading scrolling values from BG3 occurs after reading tiles of BG1 and BG2 (in the place where the reading occurs tiles of BG3 and BG4 in BGMODE 0), therefore this scrolling values apply to next tile in row. I'm right or not?

And the second question, what games or test roms using Offset-per-tile in BGMODE 4 and 6?


Top
 Profile  
 
PostPosted: Sat Apr 07, 2018 4:39 am 
Offline
User avatar

Joined: Fri May 08, 2015 7:17 pm
Posts: 2040
Location: DIGDUG
lidnariq posted a test ROM here which uses modes 0-6.

viewtopic.php?f=12&t=14945

And I think Yoshi's Island uses an offset per tile mode on the "Touch Fuzzy Get Dizzy" level.

_________________
nesdoug.com -- blog/tutorial on programming for the NES


Top
 Profile  
 
PostPosted: Sat Apr 07, 2018 7:05 am 
Offline
User avatar

Joined: Mon Jan 23, 2006 7:47 am
Posts: 102
Also in the levels that use lava or stone blocks that move up/down, iirc.


Top
 Profile  
 
PostPosted: Sun Apr 08, 2018 6:47 am 
Offline

Joined: Fri Feb 16, 2018 5:52 am
Posts: 4
Location: Ukraine
Thanks, lidnariq's test rom very helped me.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 

All times are UTC - 7 hours


Who is online

Users browsing this forum: No registered users and 9 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