Add support for new video modes

[viti95]

VGA Planar Mode 13h should be faster than Mode-Y in some cases, for example Rendition Verite cards doesn't like this mode at all. Same happens for Cyrix MediaGX SOCs. Maybe it's also possible add support for VESA modes.

• Text 80x25 (double height, 16 colors, CGA, EGA, VGA)
• Text 80x50 (16 colors, VGA)
• CGA 320x200 4 colors
• EGA 320x200 16 colors
• CGA 640x200 B&W
• Hercules 640x400 B&W
• VGA Planar Mode 13h
• VESA (2.0, 320x200 Banked & LFB)
• MDA 80x25 (double height, 4 monochrome levels)
• MDA 80x25 (double height, 8 colors, only for some IBM MDA cards)
• ATI Small Wonder, 640x200, 16 colors, dithered
• EGA 640x200 16 colors, dithered
• Add support for 64 colors on EGA cards
• IBM 8514/A (Wireframe?, Automap?)
• IBM Professional Graphics Controller (Maybe only usable for the automap)
• IBM XGA / XGA-2
• Yamaha v6366 (CGA compatible card with 320x200 and 256 color support)
• IBM CGA Composite 256 color mode (80x100, based on "512" color mode)

[viti95]

Reopen for new video modes

[viti95]

Reopen again for new video modes

[neuralnetworkz]

Maybe some of these cga black magic graphic modes?

Crtc - 8088 MPH
https://www.pouet.net/prod.php?which=65371

Crtc - area5150
https://www.pouet.net/prod.php?which=91938

Some info how it's done:

http://www.reenigne.org/blog/1k-colours-on-cga-how-its-done/

[neuralnetworkz]

Also accelerated IBM xga/xga-2 maybe?
I have an IBM ps2/e with xga-2 1Mb to test on

[viti95]

Yep, XGA is another candidate to have an accelerated version of Doom. @LuigiThirty is doing it right now, using the Doom base code instead of FastDoom. Maybe I can add support later, as I don't have any XGA hardware available.

[neuralnetworkz]

Sounds great 😁

[neuralnetworkz]

there's also this yamaha 6366 CGA chip which supposedly can display 320x200 in 256 Colours. I have one (but no monitor yet, just a portable PC lcd panel connected)
It can do Plantronics mode for a start.
V6366_Yamaha.pdf

[viti95]

That's interesting, I'll add it to the to-do list, but will be hard to implement, since there are no emulators compatible with this videocard, nor do I have a v6366 ISA card.