Improved the banking of the ATI 28800-5 cards (VGA Charger and VGA Wonder XL).
Improved the skew and horizontal display of some of the ET4000W32P cards as well as the cursor.
Made the Oak OTI 077 and PVGA WD90c30 cards use the Sierra 11487 (actually a clone is used in the real cards).
For the WD90c30, changed the way the hack is involved.
Reverted some changes of the S3 Vision/Trio that originally made glitches, now the glitches are gone and the accelerator renders fine.
Re-organized the Sierra 1148x RAMDAC's and added the 11486 (Mark 1).
MCA SVGA cards use the full 32-bit mapping.
Properly fixed text/graphics mode of the S3 pre-ViRGE cards.
PIX TRANS cleanups.
Added a sanity check to banking, per bit 0 of CRTC31.
Initial implementation of Enhanced 4-bit mode.
911/924 chips use CRTC43 bit 3 for enabling 15/16bpp mode.
fb_only variable used correctly as of now (depending if on 4bit or 8bit+ modes).
S3 ViRGE changes part 2:
Made the Trio3D/2X AGP use the PCI_ADD_AGP part accordingly
RAMDAC changes:
Sierra 11483 and 11487 don't have an RS2 signal so the four times reading scheme of 0x3c6 is used instead, per documentation.
Fixed AT&T 49x bpp selection.
Other changes:
Fixed remaining rendering issues with the Radius SVGA HT209 card.
Added dword addressing to pix trans reads.
Added VRAM masking to the hardware cursor.
Properly fixed the FIFO slots.
Width set to 1024 by default in the 911 and 924 chips.
Added a timer to improve perfomance of the 3D engine.
Made the Trio3D/2X available for all.
Reserved bit 2 of CR33 is now always set to make sure Win95's Trio3d/2X drivers work along with a workaround for the memory size.
Added preliminary DMA bus master capabilities.
Reintroduced dword mode for chips before Trio64V+.
The Trio64V+ and Trio64V2 chips now have svga->fb_only (which is strongly required by the mapping and the modes) and packed_chain4 set, just like the ViRGE.
Rewritten non-threaded FIFO to be sure that it won't hang any OS (especially OS/2) and won't cause any more glitches on Windows 3.1 86x/96x drivers.
Fixed the decode mask of the Vision868 (8MB instead of 4MB).
Fixed 16bpp cursor using the MiroCRYSTAL 10SD specific drivers for OS/2 (including seamless Win-OS/2)
Fixed Chicago 73x (73f/g and 81)'s width/pitch in 15bpp mode using its built-in drivers at 800x600 using the 928.
Vastly improved implementation of the Short Stroke Vectors.
Removed threading for FIFO mode in the cards using the 964 chips and up.
Implementation of the non-threaded FIFO for cards using the 964 chips and up. Should fix most remaining wallpaper issues with those chips.
Improved recalctimings when 256+ mode Enhanced Mode is issued.
Added the MiroCRYSTAL 8S VLB card (805, SDAC).
Added the Phoenix S3 Vision968 (IBM RGB) and the MiroCRYSTAL 20SD VLB (864, SDAC) (alongside their BIOSes).
Added the vendor specific bits of CRTC5c used by the MiroVIDEO 40SV Ergo (968), Phoenix 868 and Phoenix 968.
Restored FIFO in the pre-964 cards, but without threading (Warning, code might be bloated for this).
Fixed horizontal issue with the SPEA Mercury P64V (968).
The 82C425 is a CGA-compatible display controller chip. On top of being
able to drive a regular CRT display like an ordinary CGA card, it can
be configured to drive a monochrome 640x200 LCD panel instead.
The chip along with a LCD panel are notably used in the Victor V86P
laptop comupter.
When driving a monochrome LCD, the controller is able to employ some clever
tricks to compensate for he lack of color: by alternately turning dots on
and off with various duty cycles it can achieve displaying 4 or 8 shades
of gray. It can also enhance contrast between the text glyphs and their
background when it's less than the configured minimum (with "SMARTMAP"
algorithm).
The emulation is fairly complete. The 320x200 graphical mode uses 4 gray
shades along with stretching the pixels horziontally much like the real
hardware would. SMARTMAP is implemented for text mode and also matches
the real hardware pretty closely.
The missing bits are:
* Configurable blink rates
* Mapping the character map into host address space
The code is based on the T1000 display controller emulation and
still bears strong resemblance to it.
CRTC14 bit 6 (standard dword mode) has the highest priority over CRTC31 bit 3 (S3 dword mode), so if the latter is enabled while the former is disabled, it's byte mode. Fixes both Duke3D, LXPIC and Win3.1 running at the same time (once and for all).
Overhauled the read portion of the PIX TRANS command (fixes white corruption in some instances while keeping everything already working fine).
Fixed Miro 10SD recalctimings issue about losing graphics mode.
DWORD mode SVGA CRTC bit fixed when S3 DWORD mode bit is enabled.
Reworked the pix tranfer register to allow a word in a byte transfer.
Added an alternative bios selection for the SPEA Mirage 801 card (3.05I and 4.01, the latter being the default now.
Added the MiroCrystal 10SD 805 VLB, Phoenix 801 ISA, MiroVideo 40SV 968 VLB/PCI, SPEA Mercury P64V 968 PCI , SPEA Mirage P64 Trio64 VLB cards.
Removed some non-working S3 cards like the Trio64V+ VLB and Elsa Winner 2000 Pro X VLB (only PCI variants of these cards are now in)
