Reply 26960 of 29603, by bakemono
Tried to get this http://www.hyakushiki.net/misc/vegavga.jpg to display something on a VGA monitor without using BIOS. (With BIOS disabled, that is.) Partly for the sake of making my 286 drive two monitors at once as per this thread How to get a secondary monochrome monitor working in DOS and how to connect it to a modern display? but mainly because I wanted to use this card in my homebrew Z280 board. Though whether 286 or Z280, all I can get is a blank screen with one color of my choosing. The secrets of initializing this card are too arcane for me to discover, even after dumping all the register settings for several screen modes and tracing an INT 0x10 call through the BIOS code. But here is a BIOS listing with some comments that might not all be wrong 😀
GBAJAM 2024 submission on itch: https://90soft90.itch.io/wreckage