Iįound something in the Demoscene (1997 demo "Atlantis,ĭeep Like A Sea") that uses a 16-bit I/O write to writeĬurrent channel and register select in one write. Such registers, handle as two 8-bit I/O cycles. Gravis Ultrasound: Most I/O registers except port 3x4Īre intended for 8-bit I/O. This fixes the "basement" in MicrosoftĬreative Writer so that clicking around no longer leavesĮxtend 256-color foreground/background color behaviorįrom S3 86c928 to Vision864 and Vision868 as Windowsĩ5 behavior suggests they handle the hardware cursorĮxtend "divide cursor X position by bytes per pixel"īehavior from S3 86c928 to Vision864 and Vision868Įmulation as well, based on Windows 3.1 video driver Where the wrong color is chosen to draw filled rectangles Using display memory as the pattern mask source, toįollow S3 Trio32/Trio64 documentation, instead of theĭOSBox SVN educated guess, to resolve some edge cases It's enough forĩ0% of the GDI functions in Windows 3.1 so far.įixed S3 rectangle XGA accelerated pattern blit, when To avoid grief with DOSBox-X users, "auto"Īdded basic S3 ViRGE XGA acceleration.
Dosbox conf drivers#
Which is the only option in those drivers to offerĢ4bpp. Select "16.7 million colors (1 Meg)" in Windows 3.1, Note that the Windows drivers for older S3Ĭhipsets are perfectly happy to use 32bpp unless you ViRGE cards are also making the base modes 24bpp rather
Set video modes, this implies that the VESA BIOS on The Windows 3.1/95/98 drivers use VESA BIOS calls to They do not even offer 32bpp as an option. It seems the Windows drivers for ViRGEĬhipsets require 24bpp for truecolor modes, in fact, This setting based on which S3 chipset is beingĮmulated. Now "true" "false" or "auto", where "auto" determines "Truecolor (24-bit)" to display and render correctly.ĭnf option "vesa vbe 1.2 modes are 32bpp" is DOSBox emulates an Intel x86 PC, complete with sound, graphics, mouse, joystick, modem, etc., necessary for running many old MS-DOS games that simply cannot be run on modern PCs and operating systems, such as Microsoft Windows XP, Windows Vista, Linux and FreeBSD.įixed XGA accelerated rendering for ViRGE emulationĪnd 24 bits/pixel display modes.
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