1. If the VGA mapping is for a 0xA0000 map for a length of 0x10000, then disable XGA mode (this is independent of the XGA extended mode aperture mode 1 which is XGA's own 0xA0000 mapping).
2. Remove text mode ctrl-alt-del hack.
3. Fixed cursor x coordinate in the Trio32 using 15bpp/16bpp modes.
The mode switching phase now takes account of the display enable/reset bits of port 0x22e8 (bits 5-6). Fixes Solaris mode switching and keeps everything else happy (I hope).
1. Convert the ramdac types into an enumerator.
2. Make sure the 8514/A compatible ramdacs are, if in VGA mode, using VGA compatible ports and/or, in 8514/A mode, the 8514/A ports when needed, fixes color issues in 1280x1024 resolutions on NT 3.1 and various stuff using the Mach32.
3. Add pitch initialization on reset, fixes 8514/A display drivers on various stuff on Mach8/Mach32 cards.
If the height is 1, then make sure Cur_X is used for the destination X start, otherwise, Dest_X_Start is the destination X start for the blit. This fixes some blit errors on Win2000's mach8/32 drivers.
Make the previously Mach8 add-on only mode changes also available to the Graphics Ultra, should fix incorrect resolutions after switching from fullscreen DOS prompt to windowed and viceversa under Win98 (and SE).
1. Report the ATI 28800 of the Graphics Ultra as 28800-6.
2. Access the upper word properly on vdisp.
3. Make sure there's enough vsyncstart/vtotal space for a full vertical display.
1. The Mach8 doesn't have separate graphics pitches a la Mach32 (68800-6 and up), fixes the rendering in some drivers for Windows.
2. Special case for the add-on Mach8 for the mode switching (resolution only).
1. Do not stall the guest when the passthrough mode is on, fixes hang ups in Windows 3.1 using the 2.3 drivers.
2. In the pitch register, make sure the passthrough goes on when needed only on the ATI Mach32, not 8, fixes mode on/off in text mode when needed.
3. Cosmetic changes and logs.
This patch fixes the pitch that was originally 0 when specifying the 8514/A compatible side in the Mach8/32 cards, which should be 1024 for 8514/A compatible stuff.
1. As tiring as it seems, XOR properly the passthrough bits for mode changes. Fixes everything tested as of now (Mach8/32).
2. Implemented separate destination and source GE pitch and offsets. Fixes Windows 3.1 mach8/32 drivers using devicebitmap enabled (or dmp=1).
3. Properly fixed high and true color patterns so that the aforementioned patterns are drawn correctly in various stuff.
4. Implemented in the best possible way the CRT offset (currently in on conjunction with the GE offset).
5. On ScanToX with bpp set to 24 and dpconfig 0x6211, optmize the SRC/CUR X-Y coordinates at the end of the blit.
6. For mode changes, don't call the mode change recalctimings function if we aren't in the appropriate bits of the respective ports.
7. Separate 8514/A compatible and Extended foreground/background selection implemented, fixes Windows 3.x ATI Ultra drivers from 1992 without hacks.
8. Clear the busy flags when needed without stalling the entire guests (but not the emulator itself) (Mach8/32).
9. The MMIO regs should be enabled only when the VGA aperture has reached a graphics mode (0xA000). This fixes NT 3.x mach drivers in true color mode and making Win3.1 drivers working without a hitch at the same time.
10. Actually implement the hardware 4bpp cursor properly on Mach32.
11. Cosmetic cleanups.
1. Aliases are aliases, period.
2. Actually make the ports using bit 15 of their range use the command FIFO.
3. Improved the special ATI command 0xc2b5 in the IBM bitblt side, fixes cursor issues in 24bpp mode using OS/2.
4. When the FIFO is empty, clear the busy and available flags.
5. Also reapply a workaround for 24bpp foreground color patterns in ATI command Scan To X command, fixes patterns in OS/2 and possibly elsewhere.
6. Accelerated HiColor mode, in the IBM passthrough mode, should always be enabled, for now, as well as the Extended ATI Mach32 8bpp mode when prompted, fixes OS/2 booting into the GUI in HiColor mode.
7. Dummy data path configuration values on direct linedraw should not trigger a pixtrans read when it's not needed, fixes possible hang ups in IBM/ATI mode when the busy flag remains enabled.
1. The DX/DY coordinates for BitBLT are now signed again, fixes 8514/A cursor issues.
2. Made the busy/data available processor statuses more like the ATI one for more stability and no stalls, fixes Windows 3.x and IBM OS/2 1.x (possibly later ones too) that use the built-in 8514/A driver.
3. Made the mode switching clearer (through a note) regarding the shadow sets, this should make every program happy, I hope.
4. In the Mach32 series only, a first load of the CRT sets also initializes the GE offsets if the corresponding bit is set, fixes Mach8/32 mode tests in their eeprom and demoai with hdiload from ATI/IBM.
1. Use proper identification to what chips use what.
2. Apply some mode switch fixes to the ATI 8514/A Ultra and make 1024x768 87Hz interlaced the default mode if htotal is 0 and on ati8514_init.
3. Add the undocumented ports to the ATI 8514/A Ultra add-on as well.
1. Implemented the FIFO test data to pass some tests of the Mach8 POST ROM and tests (not complete yet).
2. Overhauled the mode switches again, but this time with way less hacks and more on manual instructions.
3. Use a function pointer to determine if the Mach8 type used is a VGA combo or add-on.
4. Mach32 mode tests are no longer incorrectly green (was caused by improper pixtrans parts).
5. Implemented overscan color to the Mach32 as well as the CRT offset.
6. And fixed a PCI LFB GPF issue with the Mach32 2.3 drivers on Win3.1x.
7. Implemented memory boundary for both the Mach32 SVGA and its accelerator.
8. Added undocumented ports used by the FIFO (such as ports 0x8AEE and 0xEAEE).
9. Plus resetting the device right a la s3.
10. Temporarily switched the bus type of the Mach8 to 8-bit in both MCA and ISA variants.
The Byte Write access of the LFB of the Mach32 was not correctly taking account of the subtraction of the address, this fixes possible graphics bugs using the LFB (Linear Aperture).
1. Follow the Mach32 manual more closely regarding vblank support.
2. The subsystem status now takes account of the other bits more accurately.
3. The Mach32 PCI, when used with the ATI 68860 ramdac, has its own bpp's when in accelerator mode, separate from the VGA compatible side, so fix this accordingly.
4. Reset the vram when a mapping change occurs, should clear the messups in the ATI Mach8/32 accel video mode tests.
1. Actually fix the LFB access by subtracting the linear base address from the current address when LFB/MMIO is on. This fixes blankness of certain Mach32 drivers on Win3.1x.
2. Apply a minor but important fix to the fonts used by said Win3.1x driver when the dpconfig activates bit 2 without bit 12 set (e.g.: 0x2255), ergo, issuing host data as monochrome without swapping it.
XGA:
1. Added a proper poll so to have its timings independent of the SVGA core and changes its renderer accordingly, mainly a blank render one.
2. Workaround the Ctrl-Alt-Del reset of Windows 2.x so that it switches back to VGA text mode correctly when using the 0xA000 64K aperture (in vid_svga.c).
SVGA core:
Re-organized the way the different timers are organized so that the XGA and 8514/A pollers can coexist with the SVGA timer without conflicts.
ATI Mach32:
Reworked the true color renderer and made it a Mach32 exclusive due to its differences from the standard one. Fixes wrong rendered colors in NT using the 32bpp renderer in RGB mode.
ATI Mach8-based (add-on only):
Do not override the clone VGA banked mapping with the standard VGA when needed. Fixes issues with banked mapping with ATI 8514/A enabled on cards with clone mappings such as Cirrus, Video7, Paradise/WD, etc.
1. Finally add the ATI 8514/A Ultra add-on BIOS in both ISA and MCA variants (despite the ROM page failure on POST).
2. Fixed a mode switch bug in the Mach8 (both add-on and vga combo) when exiting the Win3.x GUI using the native drivers.
3. Corrected (best possible) the eeprom load of the Mach8 products.
4. Partial implementation of the FIFO on the 8514/A compatible products including Mach8/32 and plain IBM 8514/A.
1. ATI Extended 8514/A mode may not use bit 5 of ATI reg 0xb0 sometimes but at the same time it won't use the standard VGA way of setting up 256+ colors, therefore, in the VGA DAC writes, use standard VGA way to revert to VGA mode in the writes instead of relying on bit 5 of ATI reg 0xb0 being enabled/disabled there. Fixes mode switches in VLB/PCI configurations using Windows 9x and possibly other stuff, ISA is unaffected and still works fine.
2. Added more logs and and remove/set I/O handlers correctly for the PCI side.
Mark the ATI extended 8514/A mode accordingly (that is, if bit 5 of ATI reg 0xb0 and using ATI extended ports at the same time). Fixes wrong colors in some instances using standard IBM 8514/A drivers on Mach32.
1. Added the missing call to mach32_updatemapping from port 0x3CF through its index 6.
2. If the accelerator DAC is active and the extended 256 color bit is on too then enable 8514/A mode when needed, otherwise it's VGA mode or decided by the passthrough/clock selection ports.
3. VGA DAC reads are redirected to the 8514/A DAC reads only when 8514/A mode is on.
