Commit Graph

2595 Commits

Author SHA1 Message Date
Volker Ruppert
74d40805d1 Added support for unlocking disk images (locks leftover from previous Bochs
session) with the new command line argument '-unlock'.
2018-05-11 07:44:49 +00:00
Volker Ruppert
9e0a507726 Added stub for the undocumented DSP command 0xE2. 2018-05-10 15:50:25 +00:00
Volker Ruppert
c10e8feea6 Added support for driving the speaker line directly with the speaker gate, but
the square wave generator disabled. This feature has been used by old demos and
games to play digitized sound before soundcards with DSP became popular.
2018-05-10 10:50:42 +00:00
Volker Ruppert
3f45d44184 Added subsystem ID for Voodoo3 AGP with an existing VGA ROM.
Updated some comments.
TODO: full AGP support, LGPL'd VGABIOS for Banshee / Voodoo3
2018-05-06 06:13:57 +00:00
Volker Ruppert
4462ac7319 Fixed Banshee status reading via MMIO (unaligned access is allowed).
The Banshee AGP model is now basicly working (tested with Win98SE).
Started documentation updates about i440BX chipset and Banshee AGP.
2018-05-03 19:46:12 +00:00
Volker Ruppert
7412ebc07b Added new macros BX_DEBUG_PCI_READ and BX_DEBUG_PCI_WRITE to unify the debug
output of PCI config space handlers.
Banshee: some PCI register fixes.
2018-05-01 15:54:37 +00:00
Volker Ruppert
e63296ddca Added more default return values and improved debug output (i/o len). 2018-04-02 17:32:51 +00:00
Volker Ruppert
a086cdf08f Some work on the Voodoo Banshee emulation.
- Added default value for the video clock frequency to make sure that the
  vertical timer works.
- Changing vidDesktopStartAddr register when the video processor is on now
  forces a screen update.
2018-04-01 16:05:40 +00:00
Volker Ruppert
1aab0f9e31 If the base image of an undoable/volatile mode image has a builtin geometry,
the toplevel image inherits the base image settings.
2018-03-31 17:07:44 +00:00
Volker Ruppert
7895516c4d Fixed copy&paste bug making undoable/volatile disk images fail. 2018-03-30 09:35:15 +00:00
Volker Ruppert
95d0a182af Some work on the disk image sector size option based on a patch by Ben Lunt.
- Implemented sector size handling in the ATA disk emulation. This feature
  still needs BIOS support to boot from a disk with big sectors.
- Enabled sector size support in the redolog_t class based disk image mode.
  The base class can handle 512 byte blocks only, but that doesn't matter since
  all valid sector sizes are multiple of it. So for now the growing, undoable
  and volatile disk image modes internally read/write 512 bytes per call.
- TODO: BIOS, bximage.
2018-03-27 17:47:46 +00:00
Volker Ruppert
1d3e8ca33f Now ignoring PCI base memory flags (BX_ERROR instead of BX_PANIC). The USB xHCI
controller is now usable again, but we still don't support the 64-bit PCI
address space.
2018-03-26 20:58:40 +00:00
Volker Ruppert
ea7334bfab Sector size option implemented in the USB disk code. The sector size value must
be specified as a USB port option (e.g. 'sect_size:1024'). The values 512, 1024
and 4096 are supported. If not specified, it defaults to 512.
TODO: ATA disk (harddrv code), BIOS, bximage.
2018-03-23 19:02:38 +00:00
Volker Ruppert
657cd05c0a Continued preparing hard disk sector size option in the hdimage code.
- 'flat' mode: disk image size must be multiple of sector size.
- 'concat' mode: each disk image size and lseek() offset must be multiple of
   sector size.
- 'sparse' mode: page size and lseek() offset must be multiple of sector size.
- TODO: 'growing', 'undoable' and 'volatile' mode: redolog_t class is still
  based on 512-byte blocks.
- TODO: 'vbox', 'vmware3', 'vmware4', 'vpc' and 'vvfat' mode have a builtin
  geometry. If other sector sizes are supported, it should be handled correctly.
- harddrv code now reports current sector size, but still panics for now.
- TODO: harrdrv and USB disk code, bximage, BIOS.
2018-03-18 09:07:31 +00:00
Volker Ruppert
db95a54238 Prepared config interface for a hard disk sector size option.
This code is based on the initial patch by Ben Lunt with some modifications:
using enum parameter, extra parser handler and cdrom handling not necessary,
TODO: hdimage and bximage code, harddrv and USB disk emulation, BIOS.
2018-03-13 20:35:56 +00:00
Volker Ruppert
e639d9dd29 Report AGP model in PCI status, new PCI capabilities and strapInfo register.
AGP specific features are not present yet.
2018-03-09 18:33:44 +00:00
Volker Ruppert
8952c144bd Some work on the i440BX chipset and related changes.
- Fixed PCI BAR initialization (now using memset()).
  - Fixed reset failure (set all PAM memory types to ROM).
  - Added stub for the AGP aperture (register BAR #0, handle APSIZE and read
    GART entry in read/write handlers).
  - Added some more PCI register defaults and write masks.
  - Fixed a warning in the ES1370 code.
  - Voodoo Banshee: set up PCI subsystem ID depending on bus and model.
  - Volatile BIOS write support must also be present in ISA BIOS memory.
2018-03-04 04:53:16 +00:00
Volker Ruppert
73bc76072e Added support for assigning a device (banshee or voodoo3) on Bochs PCI slot #5
to AGP if chipset i440BX is selected. AGP-specific features are not implemented
yet.
2018-02-25 20:59:30 +00:00
Volker Ruppert
e7093e74d8 Started implementing the i440BX PCI/AGP chipset.
- Added new PCI chipset choice for the i440BX AGPset. Some basic work is done,
  but AGP support is not present yet.
- Added new class for the "virtual" PCI-to-PCI bridge that should manage the
  secondary bus (AGP). Since this device must appear with device number #1 at
  the primary bus, it was required to change the PCI device numbers for the
  i440BX case. Moved the PIIX4 module to device number #7. The presence of the
  PCI base address regions now depends on the header type as expected.
- Since the Bochs BIOS cannot handle the modified PCI device layout, all tests
  continued with an external BIOS designed for this chipset (GA-6BA_F1.bin).
  This BIOS requires additional changes in some devices.
- ACPI: Return value 0 for some status registers and the GPI registers.
- CMOS: Since the PIIX4 supports a 256 byte CMOS RAM, prepared support for it
  and enable it in case a 256 byte CMOS image is used.
- PCI: The device numbers for 4 slots starting at #8. The 5th slot could be
  used for AGP when available.
2018-02-24 18:04:36 +00:00
Volker Ruppert
1e35653b1e Added method to return the PCI device name and improved debug output. 2018-02-18 07:41:42 +00:00
Volker Ruppert
511457fd0e Added a new section about Voodoo Graphics usage in the user documenation.
Mention the new VESA DDC support in the docs.
2018-02-17 09:10:58 +00:00
Volker Ruppert
04981c35d3 Added the subsystem ID of a Voodoo3 PCI model to make it work with an external
VGABIOS image in Win95/98 guest without hacking. Mention the Voodoo3 model in
the docs.
2018-02-16 13:11:30 +00:00
Volker Ruppert
05da2a4dff Added basic support for the Voodoo3 model (Banshee plus secondary TMU).
Using a temporary subsystem ID, since I haven't found a VGABIOS ROM image for
the PCI version and Bochs doesn't support AGP yet. After modifying Voodoo3.inf
the driver could be installed successfully in Win95/98 and the Voodoo3 works as
expected (same issues as the Banshee model).
Removed BX_ERROR message about setting undocumented srcXY register bits. They
seem to have no effect on the emulation and could be ignored.
2018-02-13 19:36:20 +00:00
Volker Ruppert
e14f70088c Fixed possible infinite loop: width for redraw_area() cannot be 0. 2018-02-12 21:07:04 +00:00
Volker Ruppert
6610382b31 Fixed possible infinte loop when text_update() is called within video mode change
(found with Voodoo Banshee).
2018-02-12 09:19:33 +00:00
Volker Ruppert
bb472a78f9 Some work on the Voodoo Banshee emulation and related changes.
- Screen-to-screen blt: added support for expanding monochrome source data.
- Fixed calculation of the pitch for packed source data.
- Fixed repeated execution of some commands in non-immediate mode.
- PCI devices: fixed and improved BX_INFO / BX_DEBUG messages.
2018-02-11 22:40:30 +00:00
Stanislav Shwartsman
1e35e64ec6 fixed compilation warnings 2018-02-05 16:02:53 +00:00
Volker Ruppert
50c1370216 Some work on the PCI devices code.
- Added INT pin init to method init_pci_conf().
- Moved readonly register handling to the common PCI write handler.
- Moved IRQ line reporting to the common PCI write handler.
2018-02-04 18:17:28 +00:00
Volker Ruppert
87145baf61 Rewrite of the PCI base address (BAR) handling to reduce code duplication.
- Added new structure bx_pci_bar_t that contains all parameters related to the
  PCI BARs (type, size, address and r/w handlers).
- Added new methods init_bar_io() and init_bar_mem() to set up the new structure
  in the pci device init code.
- Added new method pci_write_handler_common() to handle writes to the normal
  BARs and the ROM BAR. Writes to other registers are forwarded to the device
  specific PCI write handlers. Removed BAR and ROM BAR handling from the
  specific code.
- Added new method pci_bar_change_notify() to execute specific code after BAR
  update (vga, ne2k).
- Moved normal BAR handling to method after_restore_pci_state().
- Store pointer to PCI device name in bx_pci_device_c and use it for i/o setup.
2018-02-04 09:41:50 +00:00
Volker Ruppert
c4a86cbee0 Some fixes in the bochsrc save and parse functions.
- Fixed saving new parameter type BXT_PARAM_BYTESTRING (MAC address).
- Fixed some special parser functions by using new parse_param() method.
2018-02-02 19:04:59 +00:00
Volker Ruppert
89353c8f4f Applied SF patch #539 (written by David O'Shea).
- Ported "hack for NE2000 with Netware 3.11" from an older QEMU version.
- Check if the TX packet is within memory bounds, otherwise PANIC.
2018-01-30 19:21:24 +00:00
Stanislav Shwartsman
c600964b6d simplify save/retore format for pci2isa irq_registry 2018-01-26 20:13:47 +00:00
Volker Ruppert
26314fb8b7 Implemented basic DDC support for the Bochs VBE adapter.
TODO: Update both Bochs VBE and Cirrus version of the LGPL'd VGABIOS to return
the EDID using this feature.
2018-01-26 09:37:26 +00:00
Stanislav Shwartsman
7bdcc826d7 fixed ambiguous function definition 2018-01-23 19:08:23 +00:00
Volker Ruppert
5154285270 Some work on the Voodoo Banshee emulation.
- Added support for stippled lines.
- Fixed return values of the I2C interface with no VMI/decoder connected.
- Added some comments about current status of the Banshee code.
2018-01-19 20:58:06 +00:00
Volker Ruppert
de30601ca6 Fixed possible FPE at high speaker frequencies (beep_samples == 0). 2018-01-18 19:00:57 +00:00
Volker Ruppert
5c5fd2c97c Fixed segfault when disabling speaker plugin. 2018-01-16 16:55:39 +00:00
Volker Ruppert
e647f7b120 Implemented basic DDC support.
- Basic I2C implementation for DDC2B support.
- Added VESA EDID structure (values from a patch for the LGPL'd VGABIOS).
- Windows now detecting plug&play monitor "Bochs Screen" if an original VGABIOS
  image is used (Cirrus PCI / Voodoo Banshee).
- TODO: Add this feature in the Cirrus version of the LGPL'd VGABIOS.
2018-01-14 18:44:28 +00:00
Volker Ruppert
1f2d9ca668 Added DDC stub for the Cirrus and Voodoo Banshee display adapters (when ready,
this code should return the VESA EDID for the Bochs plug&play monitor).
2018-01-11 19:02:08 +00:00
Volker Ruppert
5903673b3d Two small changes in the Voodoo Banshee emulation.
- More accurate calculation of the stretch factor.
- Added support for writing the subsystem IDs in PCI space and set up default
  value in reset().
2018-01-08 20:52:23 +00:00
Volker Ruppert
23df53aae5 Voodoo Banshee: added basic screen-to-screen stretching support (using nearest
source pixel).
2018-01-06 17:27:55 +00:00
Volker Ruppert
7f321d0c20 Moved Voodoo Banshee specific code to separate file banshee.cc.
TODO: code cleanup, update workspace files.
2018-01-05 17:43:51 +00:00
Volker Ruppert
55c9bad4ef Some work on the Voodoo Banshee emulation.
- Happy new year!
- Improved pixel format conversion in host-to-screen operations.
- Rewrite of the linear framebuffer read/write code fixes icons in 16 bpp mode.
- Don't flood log file when polling the 2D status register (similar to 3D one).
- FIXME list:
  - Minor issues in all Banshee modes (e.g. forward/back buttons in explorer).
  - Display errors in 16 bpp mode after leaving 3D mode.
  - Display errors in 16 bpp mode in case debug messages are turned on (timing).
  - Voodoo2 3D demo "donut" still fails.
  - Bochs crashes on Windows host (MSVC in some cases, MSYS2 64-bit build also
    reported, but not yet reproduced.
- TODO list:
  - Remaining 2D stuff: polygon fill, stretching functions.
  - Move Banshee stuff to separate files.
  - Add Voodoo3 support (it's an improved Banshee card).
2018-01-01 19:08:16 +00:00
Volker Ruppert
6a8a204f09 Two fixes in the Voodoo Banshee emulation.
- Fixed reading from ROM in word/dword mode (SeaBIOS needs this).
- Fixed an MSVC warning.
2017-12-31 16:52:02 +00:00
Volker Ruppert
bcad3aa655 Some work on the Voodoo Banshee emulation.
- Simplified register writes from CMDFIFO using new methods in the new classes.
- Started work on reset() and continued work on save/restore support.
- Mention the Banshee model in the Bochs documentation.
2017-12-29 11:18:45 +00:00
Volker Ruppert
c505716ff1 First step of the Voodoo code restructuring. Now we have a base class
bx_voodoo_base_c that contains the shared code and the new classes
bx_voodoo_1_2_c and bx_banshee_c with the specific implementations. There are
not functional changes yet. TODO: The Banshee specific stuff could be moved to
separate files, but should still remain in the same plugin as Voodoo 1/2.
2017-12-28 09:54:22 +00:00
Volker Ruppert
d5e2fbed00 Some work on the Voodoo Banshee emulation.
- Fixed alignment for unpacked monochrome source data in case the calculated
  required amount of data for one row is more than the given source pitch.
  In even rows the leftmost pixel comes from the LSB bit #7 as expected.
  In odd rows the whole row is aligned to the next dword boundary (the rightmost
  pixel comes from the MSB bit #0). This alternating alignment is not documented,
  but fixes some bitmaps (e.g. Win95 login / logout dialogs).
- Fixed calculation of host-to-screen data size for the pixel alignment > 0 and
  color depth > 8.
- Added minimal support for pixel format conversion (32/24 to 16).
2017-12-25 09:27:00 +00:00
Volker Ruppert
625f3cf6f5 Some small changes for the Voodoo Banshee emulation.
- Also set the "Banshee busy" flag if one of the CMDFIFOs is busy.
- Fixed CMDFIFO error message condition.
- Tiled source pitch is only used for screen-to-screen operations.
2017-12-24 10:15:34 +00:00
Stanislav Shwartsman
32661d4de6 supposed to fix osx compilation 2017-12-22 08:35:04 +00:00
Volker Ruppert
6adba30922 Some small changes for the Voodoo Banshee emulation.
- Use the CMDFIFO wakeup on vertical retrace only for the 3D mode.
- Report screen mode change (2D, 3D, mixed).
- Added BX_ERRORs for currently unsupported pixel format conversion.
2017-12-20 22:12:54 +00:00
Volker Ruppert
b30ec133a3 Some work on the Voodoo Banshee emulation.
- Only continue bitblt operation if width and height is > 0 after clipping.
- Temporary hack: Processing CMDFIFO packets directly after completion fixes
  some display issues (FIXME: 3D mode should work like Voodoo2).
2017-12-17 22:23:20 +00:00
Volker Ruppert
b2a92fddfa Voodoo Banshee code cleanups and optimizations. 2017-12-17 16:55:10 +00:00
Volker Ruppert
96f269d453 Some work on the Voodoo Banshee emulation.
- Handling variable 'gui_update_pending' like Voodoo 1/2 fixes 3D display
  flicker. Simplified first stage of the update() code. Some 3D display issues
  still need to be investigated.
- Added missing 16-bit write support in 3D memory space.
- Added separate method for linear FB writes und use it for CMDFIFO packet type
  5, destination code 0. Added minimal "byte disable" support in this code.
2017-12-15 20:54:09 +00:00
Volker Ruppert
47f3936de2 Some work on the Voodoo Banshee emulation.
- Added Banshee specific registers in register_w() since they use the same
  addresses as the Voodoo2 CMDFIFO config registers in register_w_common().
  Now the fullscreen 3D mode is basicly working. The display flickers sometimes
  and the desktop is possibly unusable after leaving 3D mode. This may be
  caused by the still incorrect CMDFIFO implementation.
- Split the host-to-screen method in two ones: one for the pattern case (ternary
  ROPs) and one optimized for the standard case (binary ROPs).
- Improved the foreground/background color handling for bitblt operations.
2017-12-13 18:40:45 +00:00
Volker Ruppert
99a90c295a Some work on the Voodoo Banshee emulation.
- Prepared update() code for 3D support (not yet working).
- Attempt to fix the LFB base address.
- CMDFIFO packet type 5: Added support for destination code 0 (linear FB).
2017-12-10 16:39:11 +00:00
Volker Ruppert
d621db4c81 USB xHCI fixes for Win 8.1 by Ben Lunt. 2017-12-09 11:18:18 +00:00
Volker Ruppert
df6246601e Some fixes for the Voodoo Banshee emulation.
- Always check if CMDFIFO is still enabled in the FIFO thread loop.
- Fixed offset for 3D register access (3D still not usable).
- Apply FBI mask when accessing memory in tiled desktop mode to avoid segfault.
- Added support for 16-bit writes to LFB.
- Don't access Voodoo2 CMDFIFO in Banshee mode.
- Set up the correct chipmask for Banshee (it has only one TMU).
- Fixed CMDFIFO enable message (using index #0 and #1).
2017-12-08 18:24:54 +00:00
Volker Ruppert
dd694757f4 Attempt to fix the calculation of the source pitch and the total amount of
dwords required for host-to-screen operations. There are no related error
messages in the log when I test 8, 24 and 32 bpp modes. There are still display
errors caused by buggy code, incorrect CMDFIFO implemenation or undocumented
features. The 16 bpp mode is still unusable possibly caused by CMDFIFO. 3D mode
testing cannot start before this mode is okay.
2017-12-06 21:36:08 +00:00
Volker Ruppert
93b51df2cb Including stdint.h is not required here, since we are using Bit8u, Bit16u etc,
(thanks to Ben Lunt).
2017-12-03 07:56:45 +00:00
Volker Ruppert
aca3c9a29c Some work on the Voodoo Banshee emulation.
- Host-to-screen blt: Added support for host data word wizzling.
- Added variable 'vtimer_running' to simplify the CMDFIFO code.
- Minor other change.
2017-12-02 17:15:48 +00:00
Volker Ruppert
9a98d3a5ba Some changes for the Voodoo Banshee emulation.
- now also using update_timing() and vertical_timer_handler() for Banshee.
- Changed CMDFIFO log message to BX_DEBUG.
2017-12-01 17:05:49 +00:00
Volker Ruppert
5698c69744 Attempt to fix the CMDFIFO hole count feature based on the code from voodoo.h.txt.
The Voodoo2 works fine with it. With the Banshee model only the 16 bpp mode is
not usable yet. This issue needs to be investigated.
2017-11-30 17:24:02 +00:00
Volker Ruppert
ad60191059 Some work on the Voodoo emulation code.
- Disabled voodoo_update() function completely and added the required code to
  the vertical timer handler (Voodoo 1/2).
- Added new method banshee_blt_execute() to reduce code duplication.
- Added support for the pattern x/y start offset (Banshee).
2017-11-28 20:36:23 +00:00
Volker Ruppert
bb88561a43 Retrieve vertical retrace value with method get_crtc_params() (now using a
structure for the returned values calculated from CRTC regs).
2017-11-28 18:05:36 +00:00
Volker Ruppert
1fb03a6f5b Some fixes and small changes for the Voodoo emulation.
- Fixed Voodoo2 usage after adding CMDFIFO RdPtr rollover detection. The end
  address value is the address of the last valid 4k page.
- Added support for using 2 CMDFIFO streams (Banshee and later).
- Fixed BX_DEBUG messages in 3D register read/write functions for the Banshee
  case.
- Forward read/write access to the intrCtrl register from the 2D to the 3D
  register set. This register is still not implemented yet.
2017-11-26 18:35:50 +00:00
Volker Ruppert
778c0c6fed Set IOC flag only if the TD has been completed successfully (Thanks to Ben Lunt). 2017-11-25 11:18:02 +00:00
Volker Ruppert
690919ae0e Added vertical retrace emulation support for Voodoo Banshee. Now the screen
resolution can be set to 800 x 600 in Win95 guest. Minor other changes.
2017-11-25 10:27:53 +00:00
Volker Ruppert
ff8f0225eb Some work on the Voodoo Banshee BitBlt code.
- Implemented line / polyline commands (solid lines only). The algorithm comes
  from the already removed unused draw_line() function.
- Implemented start bit/byte support for host-to-screen blts.
- Rewrite of the launchArea handling: added new method for setting up the
  required size and handle all currently implemented command in launch mode.
2017-11-24 20:18:52 +00:00
Volker Ruppert
b0abba2c5e Some fixes for the Voodoo Banshee emulation.
- Fixed segfault when leaving tiled desktop mode.
- Temporarily disabled the CMDFIFO "hole count" feature. The current code makes
  trouble and needs to be improved.
2017-11-23 21:54:28 +00:00
Volker Ruppert
3ad06c130e Some work for the Voodoo Banshee 16 bpp mode support.
- Started implementing the CMDFIFO "hole count" support. It does not yet count
  holes, but it handles the Amin and Amax values (except read pointer rollover
  and JMP command). This is enough to get a usable desktop after Win95 guest
  startup.
- Added read / write support for the desktop tile space.
- Fixed tiled desktop redraw after bitblt operation.
2017-11-22 17:07:39 +00:00
Volker Ruppert
e136e25586 Added support for indexed host displays (the win32 gui uses a 8 bpp bitmap for
the screen buffer in 8 bpp guest mode).
2017-11-19 17:18:17 +00:00
Volker Ruppert
d6f96db705 Some fixes for the Voodoo Banshee emulation.
- Fixed display updates for color depth > 8.
- Fixed compilation on MSVC (bitblt.h).
- Improved error message for undocumented srcXY bits.
- Fixed a GCC warning.
- Updated makefile dependencies.
2017-11-19 09:06:37 +00:00
Volker Ruppert
96f4c44cce Fixed Voodoo Banshee screen update issues and some other small changes.
Banshee TODO list:
#1: Fix display errors caused by incorrect implementation and find out the
    expected behaviour of the undocumented stuff.
#2: Make color depth > 8 work correctly.
#3: Screen resulution change not possible yet (only 640 x 480 works).
#4: Implement remaining 2D commands (line, polyline, polygon fill, stretchBlt).
#5: 3D core usablility, code cleanup, ...
2017-11-17 19:06:56 +00:00
Volker Ruppert
c81df659c1 Some work on the Voodoo Banshee BitBlt code.
- Implemented ternary raster operations. With 3 binary input values we have 8
  possible combinations und the ROP code is the binary representation of the
  result table. Instead of implementing cascades of binary operations at byte
  level, we simply build a 3-bit value from D, S and P. This is the bit number
  of the ROP code to use as the result. This is performed for each bit of color
  data. We still keep the existing binary operations at byte level, since the
  code is faster for that case.
- Inplemented the "row #0 only" flag handling in pattern fill operations. This
  flags seems to have an undocumented effect on the source pitch of
  host-to-screen operations. This issue needs to be investigated.
- TODO: Some bits of the srcXY register seem to have an undocumented effect on
  host-to-screen operations, too.
2017-11-15 22:13:37 +00:00
Volker Ruppert
7ad81ace40 Some work on the Voodoo Banshee emulation.
- Added basic support for the tiled desktop space. Win95 now starts building
  the desktop, but without icons and it is not yet usable in 16 bpp mode.
- Fixed 32 to 24 bpp format conversion in host-to-screen operations.
- Fixed some raster operations.
- Now allocate buffer for launch area writes dynamicly.
- Added error messages for undocumented features.
2017-11-12 18:27:39 +00:00
Volker Ruppert
49885211ad Unified screen update code of all Voodoo models and prepared Voodoo 1/2 for
tile-based updates and screen update locking. Some related changes in the init
and save/restore code are also included. The main update code has been moved
from bx_voodoo_vga_c to bx_voodoo_c and the required parameters are set up
depending on the model. The BX_LOCK/BX_UNLOCK and SET_TILE_UPDATED stuff still
needs to be added in the 3D core. Currently a redraw_area() hack makes the
Voodoo 1/2 screen updates work as expected.
2017-11-09 17:58:53 +00:00
Volker Ruppert
b25ec2adcf Some work on the Voodoo Banshee emulation.
- Fixes and optimizations in the BitBlt code.
- Added mutex for display updates and lock some register writes and the BitBlt
  methods during screen update.
- Improved some debug messages.
TODO: Use the render_mutex for the Voodoo1/2 update code, too.
2017-11-07 22:07:39 +00:00
Volker Ruppert
205ac13582 Some work on the Voodoo Banshee emulation. Win95 with Banshee driver is now
almost usable in 8 bpp mode, but there are still issues (see below).
- Added basic support for pattern fill functions.
- Added some more ROPs (all S/D and P/D ones).
- Now using the ROP functions in rectangle, pattern and host-to-screen code.
- Several other related changes.
TODO:
- Implement remaining binary (P/S) and all of the ternary ROPs.
- Some Windows icons are still black or messy (e.g. start button) and screen
  are missing in some cases. Shutdown background is wrong, although the correct
  ROP is used.
- Cleanups and optimiations when the code is known to work as expected.
2017-11-06 17:01:30 +00:00
Volker Ruppert
ca9120655b Some work on the Voodoo Banshee emulation.
- Moved basic BitBlt stuff from the Cirrus code to a separate header file to
  make it usable for the Voodoo Banshee, too.
- Rewrite of the screen-to-screen BitBlt code for the new ROP code.
- Calculate redraw parameters based on the screen start.
- Set "Banshee busy" bit in the status register when 2D is busy.
- Added some error messages for unimplemented features.
2017-11-04 23:43:38 +00:00
Volker Ruppert
b1aefb0b6c Some work on the Voodoo Banshee emulation.
- Host-to-screen and screen-to-screen copy operations implemented (ROP 0xcc).
- Rectangle fill command now handles clipping.
- Attempt to fix the redraw_area() location after bitblt operations.
- Update the host palette entries when writing to CLUT (fixes screenshot).
- Added 2D register names for debug messages.
2017-11-01 21:32:41 +00:00
Volker Ruppert
815b8238c7 Some work on the Voodoo Banshee emulation.
- Fixed hardware cursor bottom/right edge display bug.
- Started splitting 2D code in different methods (no functional changes).
- Added hardware cursor to save/restore list.
TODO #1: Implement bitblt engine similar to the Cirrus one.
TODO #2: Voodoo code reorganization: base class with Voodoo core, one subclass
         for Voodoo1/2 and one for Banshee.
2017-10-31 22:58:10 +00:00
Volker Ruppert
78ef782b38 Some work on the Voodoo Banshee emulation.
- Added CMDFIFO extensions (CMDFIFO #1 still unhandled).
- Fixed voodoo plugin compilation on Windows.
- Fixed an MSVC warning.
2017-10-31 11:43:28 +00:00
Volker Ruppert
dcbca35ac7 Voodoo Banshee hardware cursor implemented. 2017-10-30 23:03:26 +00:00
Volker Ruppert
13d4f0ff65 Some work on the Voodoo Banshee emulation. Win95 boots now with Banshee driver
in 8 bpp mode, but it's not yet usable (no cursor, no text). List of changes:
- Added AGP/CMD/Misc register handling (CMDFIFO #0 is now usable).
- Started work on 2D register handling ("Rectangle fill" command implemented).
- Added Banshee specific code in redraw_area().
- Writing to VGA DAC registers also modifies the Banshee CLUT.
- Banshee now indicates that no TV-out and video-in device is connected.
- Some other related fixes and improvements.
2017-10-29 21:25:37 +00:00
Volker Ruppert
d7ab113a95 Improved video clock handling for the retrace timing emulation.
- Added VCLK array and removed hardcoded values.
- Added new method get_crtc_params() to retrieve htotal and vtotal values.
- Cirrus: Set up VCLK registers with default on reset (TODO: VGABIOS should do
  that when setting video mode).
- Voodoo Banshee: Set up VCLK #3 when writing to pllCtrl0 register. VCLK #0 and
  #1 are VGA compatible and VCLK #2 is fixed 50 MHz. Fixed maximum resolution
  based on PLL section of the spec.
2017-10-27 18:49:19 +00:00
Volker Ruppert
7bd6e6c7c2 Removed all of the pre-defined rasterizer functions and replaced it by a single
function. I guess the old stuff should be a speed optimization, but I don't see
a difference with the new code. The simulation output is also still the same.
Now Bochs compiles much faster with Voodoo support enabled and the binary is
much smaller. This patch has been written by Luigi B.
2017-10-23 20:01:25 +00:00
Volker Ruppert
e2245d98d3 Some work on the Voodoo Banshee emulation.
- Banshee Memory layout implemented (AGP/misc and 2D register behaviour not
  implemented yet). Now Win95 with Banshee driver can boot in standard VGA mode.
- Fixed memory allocation: Banshee has 16 MB shared LFB / TMU memory.
- Some work on save/restore support.
- Renamed Banshee VGA register handlers.
2017-10-23 18:45:16 +00:00
Volker Ruppert
539356ac13 Some changes and comments in the xHCI code by Ben Lunt. 2017-10-22 14:30:04 +00:00
Volker Ruppert
1b8c58ed58 Some work on the Voodoo Banshee emulation.
- tile-based VBE graphics updates implemented
- "half mode" support added (line doubling for low resultions)
- change screen resolution only after re-enabling the video processor
2017-10-22 12:16:20 +00:00
Volker Ruppert
26c6c3bfca Moved macros SET_TILE_UPDATED and GET_TILE_UPDATED to vgacore.h to reduce code
duplication.
2017-10-22 10:09:32 +00:00
Volker Ruppert
35684fa0f5 Started implementing the Voodoo Banshee display adapter based on the existing
"Voodoo VGA" framework. Most of the work is still to do.
- Added Banshee specific PCI write handler and related stuff. The device is
  initialzed properly by the Bochs BIOS (mem, lfb, rom and i/o).
- With Banshee specific VGA BIOS it passes the init stage and boots properly
  to DOS. Parts of the init code coming from file "voodoo.h.txt" (part of the
  original patch).
- Standard VGA modes are all usable (using the Bochs VGA core).
- VBE graphics modes with 8, 16, 24 and 32 BPP are usable (VBE drawing code is
  mostly copy&paste from the Bochs VBE code. DAC 6/8 bit switch is present.
- TODO list:
  - Voodoo Banshee memory layout (registers, 2D, 3D, LFB, textures)
  - 2D graphics engine must be written from scratch
  - interaction between new device and existing 3D core
  - non-VGA mode (Voodoo model "banshee" without VGA extension "voodoo")
  - save/restore support, move Banshee stuff to separate file, ...
2017-10-21 12:46:17 +00:00
Volker Ruppert
184324c8e8 Some small fixes in the display adapters code.
- Fixed missing bx_gui->flush() call after non-VGA update().
- Fixed a BX_DEBUG message in the Voodoo code.
- Re-define LOG_THIS for messages in the "Voodoo VGA" code.
2017-10-14 11:15:00 +00:00
Volker Ruppert
2b91dabfe5 Added new VGA extension choice "voodoo" to test the new VGA extension code. It
currently only implements an ISA standard VGA adapter with the selected Voodoo
model as it's extension. The methods of the "Voodoo VGA" device only call the
required methods of the Voodoo or VGA core.
TODO: Start implementing the Voodoo Banshee chipset based on this code.
2017-10-12 19:34:58 +00:00
Volker Ruppert
5ec78eaae2 Modified VGA extension init method. Now it returns 1 if the extension code has
initialized the VGA compatible video memory. If it has returned 0 the VGA core
code sets up the default VGA memory (256k).
2017-10-12 19:18:23 +00:00
Volker Ruppert
d25e85c21a Preparing improved VGA extension support and some VGA / Cirrus cleanups.
- Treat VGA extension name other than "none", "vbe" or "cirrus" as a VGA
  compatible device plugin and try to load it.
- Added new plugin type PLUGTYPE_VGA for such a plugins (interally handled like
  a core plugin).
- Added panic in devices init for the case no VGA compatible plugin is present.
- Added new method vga_redraw_area() that handles the non-VGA and null size
  case. The specific method redraw_area() is called otherwise.
- Moved init_systemtimer() call from extension code to init_standard_vga().
- TODO: Implement VGA subsystem in the Voodoo code to test the new feature.
  Voodoo Banshee 2D accelerator code needs to be written to make this really
  useful.
2017-10-10 18:06:16 +00:00
Volker Ruppert
6dba96d10a Some changes related to the PCI ROM handling.
- Added support for setting memory write handler to NULL (ROM case).
- Added new PCI device method after_restore_pci_state(). It currently handles
  the PCI ROM case only (could be extended).
2017-10-08 15:54:21 +00:00
Volker Ruppert
610cec209d Rewrite of the VGA/Cirrus code to reduce code duplication.
- Moved VGA timer handler to the VGA core and handle the non-VGA case there.
  It calls the specific update() code and finally bx_gui->flush().
- Moved the VGA update frequency parameter handler and the refresh_disply()
  method to the VGA core.
- Store the VGA extension parameter in the VGA core.
- Voodoo: Fixed graphics snapshot.
2017-10-08 07:55:04 +00:00
Volker Ruppert
ebbd952d3b Code cleananup: Since the Cirrus plugin device is only loaded in case the
VGA extension "cirrus" is selected, there is no need to check this parameter.
TODO: Implement new VGA extensions (e.g. Voodoo Banshee, Voodoo3).
2017-10-07 08:49:05 +00:00
Volker Ruppert
0311f47bc3 Moved all Bochs event / wait functions required for multi-threading to a new
file called "bxthread.cc".
2017-09-14 16:18:12 +00:00
Volker Ruppert
c889fcae87 Some improvements in the Voodoo2 CMDFIFO code.
TODO: Check whether or not there are still simulation freezes caused by CMDFIFO.
2017-09-12 16:29:02 +00:00