* 'usb_uhci' bochsrc option replaces 'usb1'
* minor changes in the USB code
* removed old VBE i/o port registration (they were incompatible with USB)
* updated FSF address
- fixed saving user plugin options
Make save/restore default feature, the configure option for save/restore removed from configure script and save/restore made available forever. All code now assume it is exists. Bochs save/restore tree previosly called "save_restore" renamed to "bochs" tree and it will be havily used everywhere, starting from save/restore and ending by various bochs debugger functions. I am going to rework debugger code to get rid of debug CPU access functions and use this "bochs" param tree instead
- don't init / reset Cirrus extension if disabled
- store last active BPP value independent from selected vga extension (fixes possible
panic when switching from a Cirrus 640x480 mode to standard VGA)
#1159639)
- size of text snapshot space increased to 128 kByte (for all memory mappings)
- immediately return after the panic when the number of text lines is too large
to avoid segfault
- changes to the original svga_cirrus patch:
* PCI memory/mmio PnP support, some emulation and compile fixes
* ported write mode 4 + 5 and some bufixes from cirrus vga in qemu
* new graphics API, hardware cursor support, configure option added (Robin Kay)
* partial support for transparent bitblt and bitblt write mask
memory handling in memory.cc removed)
- CRTC write protection implemented
- 16-bit read access to some VGA registers added
- memory handler code now conciders the status of the A20 line
and bpp (done for the x display library)
- new switch VBE_DISPI_GETCAPS. The xres, yres and bpp registers return the gui
capabilities if enabled.
- VBE_DISPI_ID3 defined
- don't clear the VBE memory if the new flag VBE_DISPI_NOCLEARMEM is set
- vbe_bpp_multiplier for the 4bpp mode set to 1 (usually unused, but this value is save)
- maximum number of text lines changed to 100 (CGA "graphics" mode 160x100)
- size of text snapshot buffer changed to 32k (size of MDA/CGA text memory)
- removed obsolete macro CGA_TEXT_ADDR()
ATTENTION: the Elpin VGA BIOS uses a delay of 280 vertical retraces after
displaying the copyright text
- changes to the horizontal or vertical pel panning registers force a redraw of
the screen
- screen update problems in text mode fixed
- sort order of the CRT register write cases changed
If set, the screen size will be horizontally doubled in CGA and standard
VGA modes.
- doublescan feature for CGA mode 320x200x4 added
- removed trailing spaces in VBE update code
the address offset between two lines on the screen in all VGA modes.
It depends on the CRTC offset register value and the address mode (byte, word,
dword)
- moved screen update code to the end of the write handler. If a register change
should force a redraw of the screen, the variable 'needs_update' must be set
to 1.
- changes to the attribute controller palette index register now force a redraw
of the screen
- modeX: calculation of the tile numbers fixed
- clear tile array when switching to graphics mode, clear text snapshot when
switching to text mode, do the same when changing the palette or disable video
- simplified the function determine_screen_dimensions()
- fixed the code for the CGA mode 640x200x2 in update() and mem_write()
- it works only on x86 with gcc2.95+
- uses the GCC function atribute "regparm(n)" to declare that certain
functions use the register calling convention
- performance improvement is about 6%
