Retro/pcem
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1,333 commits 3 branches 0 tags 5.5 MiB
Commit graph pcem/src/cpu.c
Author SHA1 Message Date
SarahW
84622584e2 Move CPU tables to separate file. 2019-02-08 21:34:02 +00:00
SarahW
ce4436054d Replace cpu_has* flags with single cpu_features variable and cpu_has_feature() getter. 2019-02-08 21:22:53 +00:00
SarahW
03b5a44aca More CPU sanitisation. 2019-02-08 21:17:56 +00:00
SarahW
dd68b19f0a Second CPU sanitising pass. 2019-02-07 21:53:44 +00:00
SarahW
cfd4ac3a4f Added initial timing model for K6 CPUs. 2018-12-09 22:17:11 +00:00
SarahW
fd10fdd372 Fix ATCLK timings on Winchip 2 CPUs. 2018-12-06 20:02:51 +00:00
SarahW
a9541dadea Added preliminary emulation of AMD K6 CPUs. 2018-12-06 20:02:35 +00:00
SarahW
7ec6f1e4ce Added Winchip 2 timing model. 2018-12-05 20:54:56 +00:00
SarahW
9b8b6c2c70 Add Winchip 2A CPUs. 2018-12-04 21:35:51 +00:00
SarahW
da2d819ed4 Added WinChip 2 emulation, along with (currently non-recompiled) 3DNow! instruction emulation. 2018-12-03 21:59:41 +00:00
SarahW
d489dddeee Tweak 486 prefetch timing when cache disabled, to account for burst accesses. Improves CPU speed detection on SiS496/497. 2018-04-20 10:58:12 +01:00
SarahW
031f64c1a3 Invalid CPUID instructions should return zero in EBX/ECX/EDX. Fixes CPU type test and subsequent invalid 3DNow! instruction execution in NFL Blitz 2000. 2018-04-08 17:16:04 +01:00
SarahW
5762431260 Don't add ROM waitstates on slow CPUs (<= 8 MHz). Fixes IBM AT. 2018-03-12 20:52:07 +00:00
SarahW
b530bdafea Cleaned up turbo handling. 2018-03-11 16:43:32 +00:00
SarahW
8546ce14f0 Added waitstates on instruction fetch from ROM. 2018-03-11 11:03:20 +00:00
SarahW
919f2dd45d Implemented CMPXCHG8B on Winchip. Patch from nerd73. 2018-03-03 21:32:56 +00:00
SarahW
55dbe592ad Fixed bus type detection on Cirrus Logic. 2018-02-22 21:04:32 +00:00
SarahW
b9f196d641 ISA timing now based on integer ATCLK instead of fixed point division. 2018-01-31 20:01:18 +00:00
SarahW
04cbcfb587 Added Pentium 133 to Advanced/EV CPU list. 2017-12-10 17:34:36 +00:00
SarahW
a3ae6a6eed Added IBM XT Model 286 emulation. 2017-10-11 22:09:26 +01:00
SarahW
a96e87527e Reorganised REP instructions. 2017-07-20 21:06:21 +01:00
SarahW
dc511447df Added Page Size Extension (4MB pages) to Pentium CPUs. 2017-07-16 21:24:09 +01:00
SarahW
1f33b52451 Added VME emulation to Intel DX4, Pentium and Pentium MMX. 
Temporarily disabled recompilation of CLI and STI.
 2017-06-30 20:42:19 +01:00
SarahW
45bd0db00c Corrected EuroPC CPU options. Patch from ecksemmess. 2017-06-04 17:47:13 +01:00
SarahW
3b4392bcf8 Implemented data misalignment penalties on 486 and later CPUs. 2017-06-04 16:41:33 +01:00
SarahW
c2a6ce2bac Added IBM PS/2 Model 30-286 emulation. Patch from dns2k. 2017-02-22 20:18:41 +00:00
SarahW
45423fe499 Remove 386DX CPUs from 386SX models (and vice-versa). 2017-02-18 18:14:53 +00:00
SarahW
5457531753 Only enable waitstate selection on CPUs where it has any practical effect (286/386). 2016-12-13 20:44:43 +00:00
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
396992f102 More accurate PCI timing, mainly for Voodoo. 2016-10-22 16:01:49 +01:00
SarahW
7980438e1f Reworking of joystick support : 
- Joystick type now selectable
- Added emulation of standard joysticks with up to 8 buttons
- Added emulation of Microsoft Sidewinder pads
- Host->emulated joystick button & axis mapping now configurable (only on Windows atm)
- Gameport registers now take 1us to access - helps Sidewinder drivers
 2016-06-21 22:00:31 +01:00
SarahW
512c8e5d44 Winchip FPU timings now more accurate. 2016-05-14 19:36:40 +01:00
SarahW
d83249648f Limited PS/1 to 10 MHz. 2016-05-01 12:24:08 +01:00
SarahW
e236fb6d16 Added missing FCMOV instruction for 6x86MX. 2016-04-28 19:34:46 +01:00
SarahW
153c22e442 Cyrix 6x86 emulation. Based on patch from leilei. 
Moved MOV TRx, reg to correct opcode - required by Award 430VX BIOS with 6x86.
 2016-04-27 22:23:49 +01:00
TomW
94f33aa873 More accurate timing for INT, IRET, CALL far, RET far and JMP far. 2016-02-06 18:08:10 +00:00
TomW
7b5766598e Fixed typo in cpu.c when initialising FPU dynarec opcode tables for 486SX CPUs. 2016-01-15 20:10:44 +00:00
TomW
928e76bccc Added socket 4/5 Pentium OverDrive CPUs. 
Added seperate array of socket 5 Pentium CPUs.
Patch from Battler.
 2016-01-05 19:59:41 +00:00
TomW
2ca86ba028 Added support for Tandy 1000 HX and SL/2. As part of this commit : 
- FDC now selects drive number from DOR (0x3f2)
- FDC now fails seeks on drives > 1
- XT systems no longer have BIOS mapping at E0000-EFFFF
- SN76489 now distinguishes between SN76496 (PCjr and early Tandy 1000), NCR8496 (later Tandy 1000 - different noise handling) and PSSJ
- Removed redundant limits on memory configuration - allows selection of 768k for Tandy 1000 SL/2
 2015-12-03 21:48:10 +00:00
TomW
79202cc5c0 Changed timer base frequency on XT models to 14.318MHz - PIT, CGA and 4.77MHz CPU should now stay in perfect sync. 2015-11-25 21:50:38 +00:00
TomW
22f20e3595 Fixed typo that broke 8088 timing. 2015-11-13 20:51:10 +00:00
TomW
1e45ba5f34 Removed a bunch of old #defines. Cleaned up some dead code. 2015-09-16 19:08:50 +01:00
TomW
5b1e7aece0 Added simulation of PCI access timing to Voodoo. 2015-08-22 17:03:37 +01:00
TomW
f339f00315 Interpreter and dynamic recompiler now present in a single binary. 2015-08-21 20:55:36 +01:00
TomW
63d33deb10 Added Mobile Pentium MMX CPUs (120-300 MHz). 2015-06-13 16:50:53 +01:00
TomW
b4592cdea3 Implemented new memory mapping to improve performance of self modifying code. 
New scheme allows code blocks to cross pages.
Reduced code block size down to 2kB.
 2015-01-28 21:58:02 +00:00
TomW
436c5b8cc2 Added Pentium Overdrive support. Patch from nerd73. 2014-11-24 18:23:03 +00:00
TomW
13226a2bd4 Added Pentium and Pentium MMX emulation. 2014-11-17 20:41:02 +00:00
TomW
087f412d3f Reorganised FPU emulation. 2014-11-09 14:07:03 +00:00