SarahW
083ca3d4a2
Slight optimisation when DS/SS are 'flat' (base=0, limit=4G).
2017-05-24 21:50:37 +01:00
SarahW
4cb5ddd7f7
Implemented undocumented F6/1 and F7/1 TEST instructions.
...
Implemented undocumented F1 LOCK and ICEBP instructions.
Implemented missing 286 LOADALL functionality.
SMSW now sets all 12 bits to 1 on 286.
Patch from Greatpsycho.
2017-04-28 18:47:38 +01:00
SarahW
2b892d2a7a
Fixed compiler warnings for Windows builds.
...
Added -Werror to Windows makefiles.
2017-04-11 19:34:41 +01:00
SarahW
a4f3b2013e
Added AMI 386DX and MR 386DX models (both based on OPTi 495 chipset). AMI 386DX supports external cache, useful for with prefetch emulation.
...
Also commit a few fixes required :
- Set EDX correctly on soft reset
- LOCK NOP is now treated as an illegal instruction
- Tweaks to FDC sense interrupt handling following FDC reset
2016-11-27 21:53:13 +00:00
SarahW
1b73963997
Added prefetch timing approximation for 286/386 CPUs, with configurable memory timing.
2016-11-25 21:32:02 +00:00
SarahW
eb126fd822
Moved more variables into cpu_state structure.
2016-08-21 21:28:23 +01:00
SarahW
c664682758
Move some more variables into cpu_state structure. Minor speedup (~2%).
2016-08-17 21:28:16 +01:00
SarahW
535604b760
Pack decoded ModR/M data into a single word - minor recompiler speedup.
2016-08-14 16:29:54 +01:00
SarahW
c81a91fd72
Moved integer registers, PC and flags_* variables into new cpu_state structure. Reduces recompiled code size slightly, small speedup (1-3%).
2016-04-20 21:39:41 +01:00
TomW
0b6be244ac
Added 386 LOADALL instruction, removed 286 LOADALL from non-286 CPUs. Patch from Battler.
2016-02-07 18:15:43 +00:00
TomW
9715794e08
Recompiler now handles divide exceptions correctly - now runs Flight Simulator 5.1 with QEMM
2015-08-09 13:06:01 +01:00
TomW
d13caf1b8a
HLT now reduces CPU usage in recompiler.
2014-11-16 15:09:27 +00:00
TomW
ac01998c1e
LOCK prefix on recompiler no longer causes following instruction to be executed twice - fixes Windows 2000.
2014-11-16 15:01:31 +00:00
TomW
2905c43db8
Cycle counts for recompiled blocks now generated at compile time.
2014-11-12 19:33:49 +00:00
TomW
4676daade4
Initial commit of dynamic recompiler.
...
Various CPU changes to support dynamic recompiler.
2014-11-05 21:24:16 +00:00
TomW
008c795834
Further fixes to IMUL flags.
2014-10-02 19:52:56 +01:00
TomW
cd2c3b47ed
Implemented selector limits on some instructions - fixes LBA2.
...
GPFs in real mode now work.
Selectors correctly zeroed on far return to lower privilege.
2014-08-13 20:33:56 +01:00
TomW
81e24b9cb5
Register operands on BOUND/LEA/LDS/LES/LFS/LGS/LSS now cause invalid opcode faults. Fixes NTVDM.
2014-04-27 11:40:03 +01:00
TomW
119fe36820
Added MMX emulation (probably some bugs). Implemented RDMSR/WRMSR for Winchip.
2013-08-03 15:05:50 +01:00
TomW
f822488656
Add missing files from last commit.
2013-05-27 19:56:33 +01:00
