The code currently only works with the SDL sound output module and at 44100 Hz,
with 16 bit stereo signed little endian format. FM volume control and
save/restore support are not implemented yet. The legacy code for generating
MIDI notes still works and will be removed when mixing support is implemented
in all sound modules.
- Define new structure bx_pcm_param_t and use it as a parameter for the method
sendwavepacket(). The method startwavepacket() is now called from
sendwavepacket() in case of a parameter change (temporary solution).
- soundsdl: Replaced waveready() call by some more accurate code for buffer
space check in sendwavepacket().
- soundsdl: Moved code for reading from audio buffer to a new function.
- soundsdl: Temporarily increase the audio buffer size.
- Preparing the SB16 code for the OPL emulation port from DOSBox.
- Reworked wave callback code to support 2 input sources (no mixing yet).
- Fixed SDL sound output.
- Beep generator fixes.
- Prepared the SB16 code for FM OPL output support (to be ported from DOSBox).
- Renamed wavedata callback type.
- Handle sample rate in the beep generator (TODO: handle data format).
- Don't call waveready() in the SB16 code.
- Attempt to fix SDL2 wave output using SDL_LockAudio() / SDL_UnlockAudio().
- SDL specific code in the beep thread no longer needed.
- Added framework for polling wave data and use it for beep output in sdl.
- Some work in the beep thread code (to be continued).
- Moved macros required for multithreading to bochs.h.
- Increment timer counter before checking for overflow.
- Implemented ISA bus delay in the pc_system code and use it for the SB16.
This makes OPL chip detection work at ips values > 4 Mips.
TODO: OPL chip should use wave output instead of MIDI (maybe port from DOSBox).
TODO: Use isa_bus_delay() for other legacy devices if required.
- feature implemented in the wxWidgets gui
- feature not required for legacy SDL (releases keys on focus change)
- removed duplicate code in keyboard.cc
- TODO: implement feature in the win32 gui if required
The timers now have a new member 'realtime' and they are driven by the
selected engine. The VGA update timer and the status LED timer now always use
the realtime mode, but the PIT and CMOS RTC depend on the clock options.
TODO: improve virtual timer to make operate in both modes at the same time.
The vga update code should always use the realtime mode and the pit timing
should depend on the clock option.
Notes by Ben:
This emulates a NEC/Renesas uPD720202 2-port (2 socket, 4-port register sets)
Root Hub xHCI Host Controller.
Many, many thanks to Renesas for their work and effort in helping my research.
I have tested in with my own tests and WinXP Home Edition SP3.
Use port1 and port2 to emulate a Super-speed device, and use port3 and port4
to emulate Low-, Full-, or High-speed devices.
NOTE: The Windows driver for this device uses a proprietary detection
mechanism and we don't have the permission to implement it. That's why it only
works fine with non-Windows guests.
- removed max_packet_size member from USB device structure
- usb_uhci: improved speed info
- updated USB-related documentation
- TODO: review and test the main part of the xHCI changes by Ben
the init code. Started with the SeeReg[] array values. Some other setting could
be added later. The parser code is based on the slirp config parser.
Slirp: fixed possible segfault if the value for a parameter is missing.
- added new symbol BX_WITH_SDL2 and prepared build system
- TODO #1: add new option --with-sdl2 to configure script
- TODO #2: add new file sdl2.cc (porting seems hard to do - writing from scratch
might be better)
- embedding combined manifest makes BOCHS.EXE usable
- list of DLL plugins now depends on the pci and debugger options
- 'make clean' now removes the generated manifest files
- renamed variable for external rules
- documentation update
complete and usable with the BOCHS.EXE built with the IDE.
TODO #1: fix BOCHS.EXE built with nmake (manifest issue)
TODO #2: make the currently fixed DLL plugin list variable
sections. A better solution must be found for the basic set of device plugins
in iodev that don't require special rules.
Switched back to the original gui macro naming for linking plugins.
rules can be built now (keyboard, pit, gameport, serial, vga, svga_cirrus,
hdimage, netmod, soundmod, usb_common). The generated DLLs are usable with the
BOCHS.EXE built with the IDE, but the nmake won't work at all yet.
(bx_hdimage.dll) can be built now. All plugins that require special rules
could be fixed for nmake in a similar way.
TODO: find a way to compile plugins with standard rules (GNU make uses bx_%.dll
in that case, but MSVC nmake doesn't support this syntax).
required an external binary and it couldn't be ported to Windows. Now the new
builtin and portable slirp support based on Qemu's implementation is almost
stable and all the 'vnet' DHCP and TFTP features have been ported to the new
slirp module.
TODO: rename all the "slirp_new" stuff to "slirp"
- removed obsolete local variables that made the hostname and bootfile options fail
- store requested hostname as a string to simplify the code
- check free space while processing the parameter list
- setting the max. DHCP message size is not supported yet (send error to log)
TODO #1: implement all features of the existing (vnet) TFTP support in Slirp.
TODO #2: make the slirp DHCP server work like the vnet one.
TODO #3: finally remove the slirp backend and rename the new one to "slirp".
- bx_param_string_c method isempty() didn't work for raw byte strings. Now using
it to check whether or not the current value matches the initial one. The
parameter handling of the network adapters now use this method to check if
the MAC address is already initialized to avoid incorrect BX_ERRORs.
- small documentation update
TODO: 'dnssearch' option should accept a comma-separated list of suffixes.
Other slirp TODOs: SMB support on Linux, reduce code duplication (ARP, DHCP, TFTP)
- added support for a separate slirp config file specified with the "script"
parameter. Added sample config in the "misc" subdirectory.
- now creating one logfunctions object per slirp instance and added new function
slirp_warning() to send error messages to the Bochs log.
- regenerated dependencies for the iodev/network Makefile and updated command
line example for generating them.
Updated workspace files after adding slirp and avx sources
Updated slirp TODO list:
- reduce code duplication with 'vnet' module (DHCP, TFTP, ARP)
- add separate config file for slirp to make it more flexible (using the
'script' parameter)
- add SMB support on Linux
- remove slirp backend module after next Bochs release
- applied remaining updates from Qemu slirp
- add #if blocks to all slirp .cc files for conditional compilation
- fixed some uninitialized variable warnings
- added container_of() macro replacement
- fixed unresolved symbol in netmod.cc
- added MSVC-style structure packing pragmas
- check for the presence of min / max macros
- enabled slirp_new for MSVC in configure script
TODO list:
- check for more updates from Qemu
- fix lots of compiler warnings
- reduce code duplication with 'vnet' module (DHCP, TFTP, ARP)
- add separate config file for slirp to make it more flexible (using the
'script' parameter)
- update MSVC workspace files
- add SMB support on Linux
- remove slirp backend module after next Bochs release
