- Paging code rehash. You must now use --enable-4meg-pages to
use 4Meg pages, with the default of disabled, since we don't well
support 4Meg pages yet. Paging table walks model a real CPU
more closely now, and I fixed some bugs in the old logic.
- Segment check redundancy elimination. After a segment is loaded,
reads and writes are marked when a segment type check succeeds, and
they are skipped thereafter, when possible.
- Repeated IO and memory string copy acceleration. Only some variants
of instructions are available on all platforms, word and dword
variants only on x86 for the moment due to alignment and endian issues.
This is compiled in currently with no option - I should add a configure
option.
- Added a guest linear address to host TLB. Actually, I just stick
the host address (mem.vector[addr] address) in the upper 29 bits
of the field 'combined_access' since they are unused. Convenient
for now. I'm only storing page frame addresses. This was the
simplest for of such a TLB. We can likely enhance this. Also,
I only accelerated the normal read/write routines in access.cc.
Could also modify the read-modify-write versions too. You must
use --enable-guest2host-tlb, to try this out. Currently speeds
up Win95 boot time by about 3.5% for me. More ground to cover...
- Minor mods to CPUI/MOV_CdRd for CMOV.
- Integrated enhancements from Volker to getHostMemAddr() for PCI
being enabled.
- for all modal dialogs that return a boolean result, return either
wxOK or wxCANCEL instead of 0,-1.
- you can view the NetConfigDialog box if you choose the Edit:Network menu
item, but it's not connected to the actual parameter values yet.
certain number of instructions. I use it for performance testing, and it
won't hurt anyone unless they are foolish enough to enable it in config.h.
Of course it is disabled by default!
into normal C strings. After asking about it on wx-users, I understand
it better now.
Example of unsafe code:
char *filename = dlg.GetFilename().c_str ();
printf ("file name is %s\n", filename);
The problem is that dlg.GetFilename() returns a temporary wxString
that goes out of scope at the end of that line of code. The "filename"
string is unstable if you write it this way.
Example of safe code:
char filename[1024];
wxString fn (dlg.GetFilename ());
strncpy (filename, fn.c_str (), sizeof(filename));
printf ("file name is %s\n", name);
Now we have a stable copy of the wxString in "fn" which is usable
as long as fn is in scope.
- also now we use wxStrings (almost) all the time in the interface to the
wxdialogs. Any conversion from char* to wxString and back is done in
wxmain.cc now.
for BX_CPU_LEVEL >= 6, and to have the CMOV instructions generate
an undefined opcode exception after printing info that they were
called, if BX_CPU_LEVEL <= 5. I suppose we could have a separate
configure option, but mirroring Intel, CMOV is available as of
Pentium Pro.
For now, you have to compile with --enable-cpu-level=6 for CMOV
support to be compiled in.
of bochs' broken paging code, and made an option to compile in
support of 4Meg pages, with the default being disabled, because
it is not well supported yet.
- HDConfigDialog now uses an EnableChanged() method to set the enabled bit
on components controlled by the enable checkbox.
- now sets the present bit on hard disks and cdrom
- enforces the rule that you can't have DISKD and CDROMD (just in time for
Christophe to add another interface)
- now the megabytes field is a wxStaticText, which makes it clear that
it cannot be edited.
- add "enter size/compute geometry" button for HD image
- make a few more strings into #defines in wxdialog.h
- disable most of the Edit menu during simulation, reenable it when
simulation stops
- mention what version of wxWindows to use
- correct VC++ build instructions (I haven't tested in a while but it was
obviously wrong)
- update "what works right now" and clean up to do list
