Bryan Posted January 22, 2016 Share Posted January 22, 2016 I see in the schematic that the outputs of Maria and TIA are always combined (through OR gates for everything but color). It's obvious that any output from TIA would mess with 7800 games so is TIA suppressed by putting it into VSYNC/VBLANK mode? Quote Link to comment Share on other sites More sharing options...
RevEng Posted January 28, 2016 Share Posted January 28, 2016 I'm more software than hardware, but looking at the schematic... the TIAEN(able) signal from pin 7 of U11 (which is part of the 7800/2600 INPTCTRL lock) seems to control TIA luminance, chroma, and sync, through Q2. Quote Link to comment Share on other sites More sharing options...
Bryan Posted March 14, 2016 Author Share Posted March 14, 2016 I'm more software than hardware, but looking at the schematic... the TIAEN(able) signal from pin 7 of U11 (which is part of the 7800/2600 INPTCTRL lock) seems to control TIA luminance, chroma, and sync, through Q2. Right you are! I missed that part. Thanks! Quote Link to comment Share on other sites More sharing options...
RevEng Posted March 14, 2016 Share Posted March 14, 2016 Glad I could help your excellent mod work! 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.