MiSTer-devel / GBA_MiSTer

GBA for MiSTer
GNU General Public License v2.0
143 stars 44 forks source link

Two 1536p Video Quirks #71

Closed SmokeMonsterPacks closed 4 years ago

SmokeMonsterPacks commented 4 years ago

In 1535p, the video is shifted one row to the right (see below). Shifting it one row left should fix this.

Also, 1536p video_mode=13 results in black video drop outs (on the 1536p Apple display, and my Datapath Vision), but this custom mode works: video_mode=2048,48,32,170,1536,3,4,53,220056

20200616_192019 20200618_214438

sorgelig commented 4 years ago

In 1535p, the video is shifted one row to the right (see below). Shifting it one row left should fix this.

in 2048px mode (vertical resolution doesn't matter) there was roll over, but it was fixed in framework. So latest release should be free from this problem.

Also, 1536p video_mode=13 results in black video drop outs (on the 1536p Apple display, and my Datapath Vision), but this custom mode works: video_mode=2048,48,32,170,1536,3,4,53,220056

220MHz is too much for 148MHz transceiver. Not every board may work on such clock. If it works for you, then use this custom mode. Use dvi_mode=1 which allows lower pixel clock due to narrower blanks (this is what video_mode=13 is tuned for).

SmokeMonsterPacks commented 4 years ago

Ahh, perfect, thank you!