tebe Posted July 30, 2009 Share Posted July 30, 2009 (edited) char size 4x4 (HiRes pixels), row height=4, 8 dither colors (chars 0..63), chars 64..127 for additional graphics charset #0 char line 0..3,0..3 charset #1 char line 4..7,4..7 p.s. http://atariarea.krap.pl/forum/viewtopic.p...id=97645#p97645 new_char_mode.zip Edited July 30, 2009 by tebe 2 Quote Link to comment Share on other sites More sharing options...
Heaven/TQA Posted July 30, 2009 Share Posted July 30, 2009 cool.... so you want to implement that into g2f??? Quote Link to comment Share on other sites More sharing options...
tebe Posted July 30, 2009 Author Share Posted July 30, 2009 (edited) yes, i try Edited July 30, 2009 by tebe Quote Link to comment Share on other sites More sharing options...
dwhyte Posted July 31, 2009 Share Posted July 31, 2009 Awesome! Nice work tebe!!! Quote Link to comment Share on other sites More sharing options...
atariksi Posted September 22, 2009 Share Posted September 22, 2009 Awesome! Nice work tebe!!! It's always nice to hear about new discoveries-- just wanted to point out that you can also alter ANTIC mode 2 via the GTIA -> non-GTIA GPRIOR toggle to toggle transistors within the GTIA to make it think it's in some other mode. So it's not just for ANTIC F becoming ANTIC E'. You need to wait 26 cycles after WSYNC before shutting down GTIA mode and going back to CTIA. To work out the details of what that new colorful text mode is is left as an exercise for the reader. I'm more into linear modes. 1 Quote Link to comment Share on other sites More sharing options...
andym00 Posted September 22, 2009 Share Posted September 22, 2009 Sorry, a wee bit confused here.. But this is just a redefined charset that uses 6bits right per 4 lines (or that's the intended use)? 3 bits to select the left side of the char, 3 bits for the right side ? and split every 4 lines to give you alternate patterns in the 4-8 lines ? So not really a new mode ? Or am I missing something ? So in other words it's just a normal screen mode split every 4 lines ? I'm absolutely sure I'm missing something very fundamental here.. Quote Link to comment Share on other sites More sharing options...
analmux Posted September 22, 2009 Share Posted September 22, 2009 Anyway, it is a software mode isn't it? Putting one char on the screen, really means doing bitmasked (AND, ORA) operations etc. in a bitmap environment? Quote Link to comment Share on other sites More sharing options...
Heaven/TQA Posted September 22, 2009 Share Posted September 22, 2009 (edited) Andy, it is a char mode special case where the chars are less than 8 scanlines. So in theory you can spread the 5th color more precise than using raster interrupts. a little bit comparing to the chunky mode on c64... (if I remember it right every 4 scanlines you are switching font plus video ram) Edited September 22, 2009 by Heaven/TQA Quote Link to comment Share on other sites More sharing options...
andym00 Posted September 22, 2009 Share Posted September 22, 2009 Andy, it is a char mode special case where the chars are less than 8 scanlines. So in theory you can spread the 5th color more precise than using raster interrupts. a little bit comparing to the chunky mode on c64... (if I remember it right every 4 scanlines you are switching font plus video ram) Right, that's what I thought.. I just wanted to be sure it wasn't some Antic fiddling that resulted in 64 character cells across the line Quote Link to comment Share on other sites More sharing options...
atariksi Posted September 22, 2009 Share Posted September 22, 2009 Andy, it is a char mode special case where the chars are less than 8 scanlines. So in theory you can spread the 5th color more precise than using raster interrupts. a little bit comparing to the chunky mode on c64... (if I remember it right every 4 scanlines you are switching font plus video ram) Some special modes take up more CPU power than others. Poking the VSCRL register per line seems fine if you are also doing something else in that DLI or IRQ, but it would build a lot more overhead if that was the only thing you were doing in the DLI. Quote Link to comment Share on other sites More sharing options...
tebe Posted October 6, 2019 Author Share Posted October 6, 2019 http://madteam.atari8.info/uzytki/foxmode.7z prototyping program, Fox Mode 12++ / 0++ 6 Quote Link to comment Share on other sites More sharing options...
tebe Posted October 7, 2019 Author Share Posted October 7, 2019 fox3.obx 5 Quote Link to comment Share on other sites More sharing options...
Like us on Facebook
Follow us on Twitter
AtariAge on Instagram
Watch us on YouTube
Chat on Discord
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.