Re: Snow on ISA vga card
Posted on 2023-09-25, 19:37
S3 cards (up to ViRGE/DX, Trio3D/Savage seem to fix that) do have palette corruption at PCI bus speeds above 44-45 MHz; this is especially apparent in Mode 0x13, since S3 cards actually use pixel clock halved (25.12/2 = 12.6 MHz) in this mode, and the RAMDAC seems to not being able to properly …