Stephen's A8 Blog - Nasty A8 output on modern LCD TV

[RSS Bot]

I know this has been discussed quite a bit previously. Just wanted to get some pictures. The output is from two different NTSC 130XEs via a separate Y/C (s-vid) cable. One of the machines is completely stock, the other has the full super-vid mod as well as removal of the RF modulator. The TV is a Dynex 22" LCD 720p.

 

The first issue with modern sets is the incorrect de-interlacing of the A8 signal. Every other frame is dropped by a scanline. This makes sense due to the fact that the A8 is not sending an interlaced signal - every frame is exact and also an even # of lines. Another side effect is the display only gives a 30Hz screen update. There is no flicker in "page-flipping" modes, but the downside is straight lines are not.

 

This is a screenshot of FlickerTerm. Note the staggered line which should be straight.

 

 

The other thing to note is the terrible vertical...

 

http://www.atariage.com/forums/blog/341/entry-7686-nasty-a8-output-on-modern-lcd-tv/