The-Homebrew-Cloud/Genesis-Plus-GX
2
0
Fork 0
mirror of https://github.com/ekeeke/Genesis-Plus-GX.git synced 2024-12-27 03:31:49 +01:00
Code Issues Packages Projects Releases Wiki Activity

[Core/CD] incremented CD_PLAY status delay by one CDD interrupt (fixes regression freeze in Annet Futatabi introduced by previous change)

Browse Source
This commit is contained in:
ekeeke 2020-04-10 15:28:16 +02:00
parent 18fca13142
commit 33a43e34c1
5 changed files with 10 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
HISTORY.txt
View File

@ -13,6 +13,7 @@ Genesis Plus GX 1.7.5 (xx/xx/xxxx) (Eke-Eke)
[Core/CD] [Core/CD]
--------------- ---------------
* added CD-AUDIO & CD+G support * added CD-AUDIO & CD+G support
* added CD-ROM Mode 2 (Form 1 & 2) support (Wonder Library)
* added optional support for external VORBIS library * added optional support for external VORBIS library
* added optional CHD file support * added optional CHD file support
* added CDC & GFX register polling detection / synchronization * added CDC & GFX register polling detection / synchronization
@ -39,6 +40,7 @@ Genesis Plus GX 1.7.5 (xx/xx/xxxx) (Eke-Eke)
* fixed access to Sub-CPU "read-only" communication registers (fixes Round 5 Boss freeze in Streets of Rage / Sega Classics Arcade Collection) * fixed access to Sub-CPU "read-only" communication registers (fixes Round 5 Boss freeze in Streets of Rage / Sega Classics Arcade Collection)
* fixed pending level 1 interrupts when GFX interrupt is disabled (fixes random freezes when exiting "Batman Returns" option menu) * fixed pending level 1 interrupts when GFX interrupt is disabled (fixes random freezes when exiting "Batman Returns" option menu)
* fixed CDD seek command again (Final Fight CD freeze with model 2 BIOS) * fixed CDD seek command again (Final Fight CD freeze with model 2 BIOS)
* fixed CDD status reported during seek/access time (sound effect synchronization issue in Bari Arm)
* optimized Sub-CPU / Main-CPU synchronization * optimized Sub-CPU / Main-CPU synchronization
[Core/MD] [Core/MD]
@ -66,6 +68,7 @@ Genesis Plus GX 1.7.5 (xx/xx/xxxx) (Eke-Eke)
* improved emulation accuracy of Japanese Master System I/O chip (315-5297) * improved emulation accuracy of Japanese Master System I/O chip (315-5297)
* fixed Boot ROM loading when switching system hardware * fixed Boot ROM loading when switching system hardware
* fixed 4MB ROM support * fixed 4MB ROM support
* fixed savestate support when using Boot ROM
[Core/GG] [Core/GG]
--------------- ---------------
@ -77,13 +80,16 @@ Genesis Plus GX 1.7.5 (xx/xx/xxxx) (Eke-Eke)
* added support for new SMS Power Korean dumps (Star Soldier & Pippols) * added support for new SMS Power Korean dumps (Star Soldier & Pippols)
* added support for SG-1000 II clone hardware (2KB RAM + integrated VDP/PSG chip 315-5066) * added support for SG-1000 II clone hardware (2KB RAM + integrated VDP/PSG chip 315-5066)
* fixed SG-1000 internal RAM size (1KB instead of 2KB) * fixed SG-1000 internal RAM size (1KB instead of 2KB)
* fixed savestates for games using external RAM
* restored SG-1000 Pause button support * restored SG-1000 Pause button support
[Core/CPU] [Core/CPU]
--------------- ---------------
* added Z80 wait-states on 68k bus access (fixes Remute Red Eyes demo)
* improved 68k auto-vectored interrupts acknowledge cycle timing accuracy (Bubsy background color corruption during cutscenes) * improved 68k auto-vectored interrupts acknowledge cycle timing accuracy (Bubsy background color corruption during cutscenes)
* fixed 68k undocumented behaviors for ABCD/SBCD/NBCD instructions (thanks to Flamewing for his test ROM) * fixed 68k undocumented behaviors for ABCD/SBCD/NBCD instructions (thanks to Flamewing for his test ROM)
* fixed 68k timing of BTST Dn,#Imm instruction (verified by Flamewing in original microcode) * fixed 68k timing of BTST Dn,#Imm instruction (verified by Flamewing in original microcode)
* fixed 68K DIVU instruction timings for SUB-CPU
* fixed Z80 interrupt duration (Bomb on Basic City music running too fast) * fixed Z80 interrupt duration (Bomb on Basic City music running too fast)
* fixed Z80 SP register initialization on power-on for Master System & Game Gear * fixed Z80 SP register initialization on power-on for Master System & Game Gear
(Ace of Aces, Shadow Dancer, Ecco the Dolphin, Evander Holyfield Real Deal Boxing) (Ace of Aces, Shadow Dancer, Ecco the Dolphin, Evander Holyfield Real Deal Boxing)
@ -127,6 +133,7 @@ Genesis Plus GX 1.7.5 (xx/xx/xxxx) (Eke-Eke)
* replaced configurable YM2612 DAC quantization by configurable YM2612 chip model emulation (discrete, ASIC-integrated or enhanced) * replaced configurable YM2612 DAC quantization by configurable YM2612 chip model emulation (discrete, ASIC-integrated or enhanced)
* added DAC distortion emulation for discrete YM2612 chip model * added DAC distortion emulation for discrete YM2612 chip model
* added accurate status & BUSY flag emulation for discrete and ASIC-integrated YM2612 chip models (verified on real hardware) * added accurate status & BUSY flag emulation for discrete and ASIC-integrated YM2612 chip models (verified on real hardware)
* added optional support for cycle-accurate YM3438/YM2612 & YM2413 cores from Nuked
* improved 9-bit DAC quantization accuracy for discrete and ASIC-integrated YM2612 chip models (verified on YM2612 die) * improved 9-bit DAC quantization accuracy for discrete and ASIC-integrated YM2612 chip models (verified on YM2612 die)
* rewrote optimized & more accurate PSG core from scratch * rewrote optimized & more accurate PSG core from scratch
* removed PSG boost noise feature & added optional high-quality PSG resampling * removed PSG boost noise feature & added optional high-quality PSG resampling

BIN
builds/genesis_plus_gx_libretro.dll
View File

Binary file not shown.

BIN
builds/genplus_cube.dol
View File

Binary file not shown.
Side by Side Swipe Overlay

Before

Width:  |  Height:  |  Size: 3.7 MiB

After

Width:  |  Height:  |  Size: 3.7 MiB

BIN
builds/genplus_wii.dol
View File

Binary file not shown.
Side by Side Swipe Overlay

Before

Width:  |  Height:  |  Size: 3.9 MiB

After

Width:  |  Height:  |  Size: 3.9 MiB

6
core/cd_hw/cdd.c
View File

@ -1791,8 +1791,8 @@ void cdd_process(void)
{ {
/* RS0-RS8 are normally unchanged unless reported drive status needs to be updated (i.e previous drive command has been processed) */ /* RS0-RS8 are normally unchanged unless reported drive status needs to be updated (i.e previous drive command has been processed) */
/* Note: this function is called one 75hz frame ahead of CDD update so latency counter is always one step ahead of upcoming status */ /* Note: this function is called one 75hz frame ahead of CDD update so latency counter is always one step ahead of upcoming status */
/* Also, Radical Rex needs at least two interrupts with 'playing' status returned before sectors start getting incremented */ /* Radical Rex and Annet Futatabi both need at least respectively 2 and 3 interrupts with 'playing' status returned before sectors start getting incremented */
if (cdd.latency <= 2) if (cdd.latency <= 3)
{ {
/* update reported drive status */ /* update reported drive status */
scd.regs[0x38>>1].byte.h = cdd.status; scd.regs[0x38>>1].byte.h = cdd.status;
@ -1932,7 +1932,7 @@ void cdd_process(void)
if (!cdd.latency) if (!cdd.latency)
{ {
/* Fixes a few games hanging because they expect data to be read with some delay */ /* Fixes a few games hanging because they expect data to be read with some delay */
/* Wolf Team games (Anet Futatabi, Aisle Lord, Cobra Command, Earnest Evans, Road Avenger & Time Gal) need at least 11 interrupts delay */ /* Wolf Team games (Annet Futatabi, Aisle Lord, Cobra Command, Earnest Evans, Road Avenger & Time Gal) need at least 11 interrupts delay */
/* Space Adventure Cobra (2nd morgue scene) needs at least 13 interrupts delay (incl. seek time, so 11 is OK) */ /* Space Adventure Cobra (2nd morgue scene) needs at least 13 interrupts delay (incl. seek time, so 11 is OK) */
cdd.latency = 11; cdd.latency = 11;
} }