For my work on digital preservation it's important to have "golden"
disk images that are not corrupted by user action. In order to enable
this, I've added support for VHD virtual disks (especially snapshots !)
to the Linux and OS X versions of BasiliskII and SheepShaver.
The support uses the open source libvhd library which is part of xen,
available here:
http://www.xen.org/products/xen_source.html
The piece that's needed is libvhd which is in tools/blktap2 and it can
be separately compiled.
The vhd-util enables creation of vhd disks and snapshots.
Compiling libvhd for OS X is non-trivial and required 1) a new config
and 2) a number of small changes to the include files and c files.
Compiling for linux is a snap.
I use this as follows.
1) create my "golden image" gold.dsk in the usual way
2) create a snapshot: vhd-util snapshot -n gold.vhd -p gold.dsk -m
3) use the snapshot in my prefs file
In my work the golden images are in an AFS system which means the golden
images can reside at "universal" addresses. The snapshots are initially
tiny, so a complete virtual machine configuration -- prefs + snapshot is
quick to download for the end user.
The snapshots are copy on write which has the pleasant side effect of
letting the end user keep any changes.
Add bin/cue support. The following should work:
1) Basilisk and SheepShaver with sdl-audio and bincue on linux and os x
2) SheepShaver with bincue and core audio on os x
Other bugs fixed:
- CD-ROM media are polled and now can be changed without rebooting
- Buffer overflow, memory leak and extra wait in CD-ROM ejection code
Basilisk II to hang on MacOS X as an X11 build. I am not sure this is
supposed to work in an Aqua build so I leave that enable there, assuming
<AvailabilityMacros.h> is included somehow, thus defining MAC_OS_X_VERSION_*
and friends.
possible
- rom_patches.cpp: check for double PACK 4 resources; if only one is found,
assume that the ROM requires an FPU and issue a warning if FPU emulation
is turned off
- UAE CPU opcode routines no longer return the cycle count
- main_unix.cpp: pressing Ctrl-C dumps the UAE CPU state before entering mon
- sys_unix.cpp: under Linux, partition sizes are read with BLKGETSIZE instead
of llseek()
