Retro/pcem
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106 commits 3 branches 0 tags 5.5 MiB
Commit graph pcem/src/386.c
Author SHA1 Message Date
TomW
9ba75bd910 Minor memory optimisations. 2014-06-07 15:57:57 +01:00
TomW
1493306d5e Restore correct ESP value on fault during IRET - fixes issues in at least Windows NT 3.51, NT 4.0, OS/2 2.0, OS/2 Warp. Thanks to SA1988. 
Hack to mirror IDE register writes to both drives, fixes IDE issues on NT.
Fixed occasional PCem crash when accessing a faulting page, fixes crash in OS/2 2.0.
 2014-04-09 19:55:14 +01:00
TomW
7bfadae7f2 Fixed trap handling. 2014-03-29 17:35:50 +00:00
TomW
e737d2fa45 Loading a segment register in real mode no longer clears USE32. 
CR3 no longer masks values written to it.
Real mode interrupts now take IDT base into account.
Fixes 'huge unreal' mode (flat assembler).
 2014-03-29 14:28:13 +00:00
TomW
2ca4ead570 Implemented preliminary S3 ViRGE 2D blitter emulation. 
Misc ViRGE fixes.
Changes to memory mapping.
Changes to PCI handling.
Disabled 'AMI WinBIOS 486 PCI' due to incomplete chipset emulation.
Invalid GUS register reads no longer kill the emulator.
 2014-03-20 14:03:55 +00:00
TomW
adde1a77a4 Illegal REP and FFh opcodes no longer cause PCem to exit. 2013-12-11 20:18:26 +00:00
TomW
36cdd540b2 PIT timers can now be restarted using GATE input - CPU speed detection on SiS496/497 now works. 
Added missing port 0x61 to Olivetti M24 - PC speaker now works on that machine.
Some code tidying.
 2013-11-08 22:32:34 +00:00
TomW
119fe36820 Added MMX emulation (probably some bugs). Implemented RDMSR/WRMSR for Winchip. 2013-08-03 15:05:50 +01:00
TomW
9312de19ac Now up to date with current dev version. 
Changes since v0.7 :
- Major CPU reorganisation. This has possibly broken some stuff, though I fixed all the regressions I could find
- Lazy flags. This brought 10% speed improvement at one point, but that's probably been lost now
- 430 VX chipset emulation
- IDT Winchip emulation (currently sans MMX). Timing is probably wrong
- Fixed a few FPU bugs
- Timer reorganisation
- Sound reorganisation
- Other general reorganisation
- AdLib Gold emulation
- Windows Sound System emulation
- Pro Audio Spectrum 16 emulation. This currently works with most DOS stuff, but not in Windows
- Major improvements to GUS emulation. Has the downside that it now conflicts with SB emulation, so probably best to not enable both simultaneously
- New graphics cards :
  - ATI-18800 (VGA Edge-16)
  - ATI-28800 (VGA Charger)
  - ATI Mach64GX (Graphics Pro Turbo). Quite a few features missing, but Windows doesn't seem to use half the features of this card
  - Cirrus Logic CL-GD5429. Blitter is a bit broken
  - Oak OTI-067
  - S3 Trio64 (Number Nine 9FX)
  - S3 Virge. Only framebuffer stuff at the minute, Windows won't recognise the card
  - Trident TGUI-9440
  - VGA. Doesn't work yet
- Beginnings of 3DFX emulation, however this is in extremely early stages and doesn't do anything useful
- Fixed DMA bug stopping floppy drives working in Windows 3.x
- Fixed some other stuff probably
- Broke some other stuff probably as well
 2013-05-27 17:46:42 +01:00
TomW
3c253c2cf8 Add v0.7 source 2013-04-21 14:54:35 +01:00