ekeeke
2345d98b69
Merge pull request #181 from libretro/master
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[Core/CPU] add optional 68K and Z80 overclocking
2017-10-04 11:19:10 +02:00
Brian Koropoff
2135365d5c
Add experimental overclock option.
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This reduces all cycle costs by half for the primary CPU. There
is a delay upon loading before overclocking is applied as a
workaround for some games that detect PAL/NTSC systems by counting
cycles in a frame at startup.
2017-10-03 16:46:17 -07:00
nukeykt
573120e4f6
Nuked OPN2: requested changes 2
2017-09-29 22:37:13 +09:00
nukeykt
405db5d9f4
Nuked OPN2: requested changes
2017-09-29 18:01:03 +09:00
nukeykt
51f802b2cc
Nuked OPN2: ASIC YM3438 & YM2612 emulation
2017-09-29 01:45:49 +09:00
nukeykt
27a77147aa
Nuked OPN2: optimize detune calculation
2017-09-28 19:54:12 +09:00
nukeykt
6a23a42540
Nuked OPN2: minor tweaks
2017-09-28 17:00:31 +09:00
ekeeke
e2774c7b8a
Update ym2612.c
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[Core/YM2612] minor optimizations
2017-09-27 13:58:22 +02:00
nukeykt
eb457641a8
Nuked OPN2: Don't attack if key is off
2017-09-26 20:36:07 +09:00
nukeykt
13ab2aafbc
Nuked OPN2: Fix LFO PM
2017-09-26 19:23:43 +09:00
ekeeke
3d8bd155a7
[Core/Sound] fixed EG counter loopback behavior (verified on real YM3438 die by nukez)
2017-09-26 10:25:48 +02:00
twinaphex
accc1c030e
Use stdint.h instead of inttypes.h - fixes MSVC < 2010
2017-09-26 04:18:19 +02:00
twinaphex
ba28a28b7e
Fix Emscripten
2017-09-26 00:49:48 +02:00
ekeeke
3fc3a57b26
[Core/68k] fixed NBCD insruction when using register operand
2017-09-25 01:09:09 +02:00
nukeykt
1768a34144
Nuked OPN2: requested changes 3
2017-09-24 01:47:50 +09:00
nukeykt
757a6e0c1f
Nuked OPN2: requested changes 2
2017-09-23 21:17:05 +09:00
nukeykt
1c6fa9fdb6
Nuked OPN2: requested changes
2017-09-23 20:26:26 +09:00
nukeykt
0128f345b5
Add nuked opn2 as alternative core
2017-09-23 12:52:45 +09:00
EkeEke
00a79db64e
[Core/CD] fixed cooked Mode-1 (ISO) sectors access in CHD files
2017-09-23 00:14:43 +02:00
notaz
5d13ccbe3f
[Core/SVP] fix pointer arithmetic on 64bit ( #171 )
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I don't want broken version of my code to linger around.
2017-09-21 09:24:50 +02:00
EkeEke
94103569ff
[Core/VDP] allow active screen width to be modified during first two lines (Bugs Bunny in Double Trouble)
2017-09-20 16:45:50 +02:00
EkeEke
527fd6ecd8
[Core/VDP] improved VDP status read timing accuracy (fixes 'Marvel Land' demo mode)
2017-09-20 10:53:08 +02:00
EkeEke
f6f4556533
[Core/Sound] fixed 3-Band EQ implementation
2017-09-19 15:26:50 +02:00
EkeEke
5a3cfbc1b9
[Core/CD] implemented proper CHD file virtualization
2017-09-19 15:00:03 +02:00
EkeEke
31906b20cf
[Core/Sound] fixed PSG noise channel bug
2017-09-19 12:21:41 +02:00
EkeEke
3a0ec7e895
[Wii] fix compilation issue caused by libretro patch to libchdr
2017-09-19 12:19:28 +02:00
twinaphex
12fde25a68
Fix one compilation error for MSVC 2003 Xbox 1 - size_t is defined
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in stddef.h
2017-09-17 19:32:52 +02:00
twinaphex
e23498aece
Remove msvc 2003/2010 solutions
2017-09-17 19:32:52 +02:00
twinaphex
da80349f9c
Update
2017-09-07 02:18:14 +02:00
twinaphex
2dfa1317b0
Update libchdr
2017-09-06 19:07:42 +02:00
EkeEke
05dc8faa04
[Core/CD] added (optional) CHD image file support
2017-08-27 16:42:31 +02:00
EkeEke
f5e425b92a
[Core/CD] fixed CD hardware buffer initialization when using dynamic memory allocation
2017-08-15 11:00:47 +02:00
EkeEke
f5c826731d
[Core/CD] fixed track relative time computation during pregap
2017-08-15 10:59:10 +02:00
EkeEke
147ad71a3c
[Core/VDP] fixed FIFO timings when switching H32/H40 mode while display is active
2017-07-15 13:03:58 +02:00
EkeEke
63b0d6a4c1
[Core/IO] increased Sega Mouse latency (fixes mouse support in Star Blade)
2017-07-15 13:00:49 +02:00
EkeEke
07f333b1ed
[Core/MD] added (very basic) emulation of Flashkit MD hardware
2017-07-06 01:16:58 +02:00
EkeEke
2a19462f0d
[Core/CD] added support for platform-configurable CD file virtualization
2017-06-30 13:42:47 +02:00
EkeEke
4017d379e6
[Core/VDP] improved DMA timing accuracy during blanking (verified on real hardware by Mask of Destiny)
2017-06-24 15:59:44 +02:00
EkeEke
38ffc317cb
[Core/VDP] improved FIFO emulation accuracy
2017-06-05 23:52:03 +02:00
EkeEke
ee0fd881f6
[Core/CPU] removed 68k stack access optimizations to prevent unintentional (or intentional) ROM corruption
2017-05-08 16:35:05 +02:00
EkeEke
9810f9d34b
[Core/CPU] minor optimization to 68k read/write handlers
2017-05-08 15:59:32 +02:00
EkeEke
0fc6a09b1d
[Core/MD] fixed 68k read memory handler
2017-04-14 21:26:58 +02:00
EkeEke
4c04c8f719
[Core/Sound] minor YM2612 optimization
2017-04-09 19:31:40 +02:00
EkeEke
8f15c1d43b
Merge branch 'master' of https://github.com/ekeeke/Genesis-Plus-GX
2017-04-09 19:13:01 +02:00
EkeEke
62c1d82145
[Core/Sound] fixed Timer B overflow handling
2017-04-09 19:12:21 +02:00
EkeEke
116b001fb2
[Core/Sound] fixed YM2612 LFO PM implementation (block & keyscale code should not be modified by LFO)
2017-04-09 18:54:02 +02:00
ekeeke
cc056b92db
[Core/Sound] fixed PSG power-on latched register (verified on VA4 MD1 hardware)
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Initial test that indicated power-on latched register was noise attenuation register was flawed because it wasn't done after a "cold" power-on. It appears the latched value is not totally reseted when doing a quick power off/on cycle (which was done with initial test) and would keep last value being set.
2017-04-02 21:40:24 +02:00
EkeEke
5a74df31ee
[Core/CPU] fixed 68k undocumented behaviors for ABCD/SBCD/NBCD instructions (thanks to flamewing for his test ROM)
2017-03-30 15:02:15 +02:00
EkeEke
a62c6f9ffe
[Core/Sound]
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* fixed YM2612 self-feedback regression introduced in 1.7.1
* fixed YM2612 one-sample extra delay on operator1 output
2017-03-28 16:19:55 +02:00
EkeEke
b78ce06728
[Core/Sound] improved accuracy of SN76489 core
2017-03-28 16:15:45 +02:00
