04-06-2017, 06:43 PM
Previously in this thread I had been using the crude voltage addition for line and frame syncs. I've now tried using the composite sync generated by the graphics card and the modeline editor. The syncs are still not as per the EMI 405 standard but are an improvement regarding interlace.
Below are images of the modeline editor with the two standards and screen shots taken from the HMV901 with 405 and 240 respectively. I had previously been using the 1680x220 for 240 line
The 240 image is now using a new modeline of 1200x220 suggested by Jeroni Paul that uses the minimum horizontal resolution available from my graphics card and requires a less extreme aspect ratio adjustment of the source image.
Peter
Below are images of the modeline editor with the two standards and screen shots taken from the HMV901 with 405 and 240 respectively. I had previously been using the 1680x220 for 240 line
The 240 image is now using a new modeline of 1200x220 suggested by Jeroni Paul that uses the minimum horizontal resolution available from my graphics card and requires a less extreme aspect ratio adjustment of the source image.
Peter
