Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
psx:download:gpu [2016/02/14 17:24]
amidog
psx:download:gpu [2016/02/14 17:36] (current)
amidog
Line 15: Line 15:
 ====== Overscan ====== ====== Overscan ======
  
-Here are examples of three (probably) unusual PSX resolutions,​ 720x576 15bit and 680x576/​720x576 24bit (PAL interlace). This is accomplished by setting the PSX to display an image with 576 rows and then constantly updating the upper (and left for the 24x version) part of the image using DMA as the PSX has a hardcoded framebuffer of 1024x512 pixels. Luckily the RAMDAC wraps when reaching the bottom and right of the image, making it possible to show more than 512 lines and more than 680 24bit pixels.+Here are examples of some (probably) unusual PSX resolutions,​ 720x576 15bit and 680x576/​720x576 24bit (PAL interlace). This is accomplished by setting the PSX to display an image with 576 rows and then constantly updating the upper (and left for the 24x version) part of the image using DMA as the PSX has a hardcoded framebuffer of 1024x512 ​15bit pixels. Luckily the RAMDAC wraps when reaching the bottom and right of the image, making it possible to show more than 512 lines (and more than 680 24bit pixels).
  
 {{:​psx:​download:​overscan_15.png?​300|}} {{:​psx:​download:​overscan_24.png?​300|}} {{:​psx:​download:​overscan_24x.png?​300|}} {{:​psx:​download:​overscan_15.png?​300|}} {{:​psx:​download:​overscan_24.png?​300|}} {{:​psx:​download:​overscan_24x.png?​300|}}
Print/export