Commit Graph

44 Commits

Author SHA1 Message Date
ekeeke
9f25226536 [Core/CD] improved emulation of Word-RAM access limitations in 2M mode (fixes regression in Mortal Kombat) 2024-01-16 14:00:21 +01:00
ekeeke
d4ca576c07 [Core/CD] fixed BOOT ROM level 4 interrupt vector upper word value (verified on real hardware, cf. Krikzz's mcd-verificator) 2023-11-26 17:48:55 +01:00
ekeeke
fcb6620202 [Core/CD] added limited support for LC89513K extended registers (only when Wondermega M2, X'Eye, CDX or Multi-Mega BIOS is detected) and improved accuracy of Main-CPU & Sub-CPU access to CDC registers (fixes mcd-verificator CDC REGS tests) 2023-11-25 19:09:03 +01:00
ekeeke
6669d25948 [Core/CD] fixed memory mode register bits masking when read from MAIN-CPU and SUB-CPU (verified on real hardware, cf. Krikzz's mcd-verificator) 2023-11-19 16:02:33 +01:00
ekeeke
6cc8bbc277 [Core/CD] added emulation of Word-RAM access limitations in 2M mode (fixes graphical issues in Marko's Magic Football) 2023-11-18 19:38:33 +01:00
ekeeke
9b0b8d3afc [Core/CD] minor optimization of Word-RAM switching in 1M mode 2023-11-18 18:01:01 +01:00
ekeeke
8169f02496 [Core/CD] MAIN-CPU/SUB-CPU synchronization code cleanup 2023-11-18 17:51:55 +01:00
ekeeke
8e02a430aa [Core/CD] fixed CDC DMA to PCM RAM when transfer length is not word-aligned 2023-11-10 14:25:32 +01:00
ekeeke
ea8d299123 [Core/CD] improved GFX processing accuracy to halt it while Word RAM is allocated to Main CPU in 2M mode 2022-10-09 10:13:24 +02:00
ekeeke
7d4ae7da0c [Core/CD] fixed byte access address range to Font Data registers 2022-02-26 10:26:12 +01:00
ekeeke
7fe8d95ca1 [Core/CD] fixed Boot ROM level 4 interrupt vector upper word value 2022-02-25 16:45:39 +01:00
ekeeke
58accf0689 [Core/CD] fixed Memory Mode, Timer and Font Color registers byte access at even address (verified on real hardware, cf. Krikzz's mcd-verificator) 2022-02-25 15:29:18 +01:00
ekeeke
dfe3672878 [Core/MD] added support for MegaSD CD hardware overlay (MD+ hacks) and extended SSF2 / ROM write mappers 2021-09-13 19:32:52 +02:00
ekeeke
e87891fcca [Core/CD] improved CD audio savestate and CD file seeking (in preparation for MegaSD support) 2021-09-09 00:54:45 +02:00
ekeeke
c718b1f3f2 [Core/CD] fixed CD communication registers state on peripheral reset (fixes SUB-CPU side initialization in MSU-MD sample demo and some Mode 1 patched games using MSU-MD driver) 2020-09-08 01:57:44 +02:00
ekeeke
fbb3448cea [Core/CD] fixed word access to CDD control register (fixes spurious audio track playback on startup with Mode 1 patched games using MSU-MD driver) 2020-09-04 02:37:01 +02:00
ekeeke
e66b7bc83d [Core/CD] improved Timer interrupt timings and CDD interrupt accuracy (fixes audio stutters during Popful Mail FMV) 2020-04-14 15:51:38 +02:00
ekeeke
364d186789 [Core/CD] optimized accesses to CDC RAM on little-endian platforms 2019-11-25 17:25:34 +01:00
ekeeke
b1ccc1aaba [Core/CD] improved CD hardware reset timing accuracy on software reset 2019-03-23 14:01:43 +01:00
ekeeke
cae62cd675 [Core/CD] fixed Main-CPU/Sub-CPU synchronization edge case 2019-03-23 13:55:44 +01:00
ekeeke
0b75d4ba74 [Core/CD] improved accuracy of Word-RAM byte writes (verified on schematic) 2019-01-09 00:54:59 +01:00
ekeeke
d539061d99 [Core/CD] added support for Wondermega & Wondermega M2/X'Eye specific fader hardware (fixes CD-DA issues and freeze when using Wondermega, Wondermega M2 or X'Eye BIOS) 2018-08-30 18:37:12 +02:00
EkeEke
60bb5edb17 [Core/CD] fixed access to Sub-CPU "read-only" communication registers (fixes Round 5 Boss freeze in Streets of Rage / Sega Classics Arcade Collection) 2016-09-07 23:01:40 +02:00
EkeEke
36da8a2453 [Core/CD] CD timings should be initialized during CD hardware initialization (fixes broken Mode 1 support) 2016-07-06 23:09:15 +02:00
EkeEke
ece23d007e [Core/CD] improved PAL Mega CD timing accuracy 2016-06-22 01:15:15 +02:00
EkeEke
e347ef2713 [Core/CD] minor optimization 2015-07-09 23:49:41 +02:00
EkeEke
bbdb551faf [Core/CD] improved PCM chip & Gate-Array area mirroring 2015-05-31 20:39:53 +02:00
EkeEke
a07f7a3d24 [Core/CD] added CD-AUDIO & CD+G support 2015-05-31 18:21:35 +02:00
EkeEke
4a41e0cca7 [Core/MCD] fixed PRG-RAM access from MAIN-CPU side on system reset 2015-04-26 18:25:21 +02:00
EkeEke
5a3d4655ba [Core/SCD] improved emulation accuracy of mirrored memory areas 2015-02-08 13:53:47 +01:00
EkeEke
c478c6026a [Core/SCD] disable access to mirrored areas of PRG-RAM as well when SUB-CPU is not halted (continuing fix for Dungeon Explorer USA) 2015-01-31 18:05:44 +01:00
EkeEke
e9e56c56b0 [Core/CD] disabled 68k & Z80 access to PRG-RAM when SUB-CPU is running (proper fix for Dungeon Explorer USA version) 2015-01-28 00:32:44 +01:00
EkeEke
d11e0166fa [Core/MCD] disabled Z80 write access to PRG-RAM (fixes Dungeon Explorer USA version) 2015-01-26 01:05:25 +01:00
EkeEke
8392d93fcb [Core/SCD] improved savestate 2014-12-14 17:10:45 +01:00
EkeEke
aabd7f8c2b [Core/MCD] fixed state loading bug when SUB-CPU interrupt is pending 2014-10-23 23:37:50 +02:00
EkeEke
07677550fe [Core/MCD] fixed incorrect masking of Level 3 (GFX) interrupts (spurious freeze during Japanese BIOS intro) 2014-10-23 23:22:10 +02:00
EkeEke
c6bcd315fb [Core/MCD] fixed H-INT vector handling when using Mode 1 2013-12-17 17:06:13 +01:00
EkeEke
aef1b342fb [Core/MCD] removed redundant checking on CPU sync 2013-10-30 00:37:10 +01:00
EkeEke
e6774eed1b [Core/MCD] disabled CD hardware reset on Soft-Reset (verified on real hardware) 2013-10-21 00:27:10 +02:00
EkeEke
f6a3903032 [Core/MCD] fixed access to "write-only" communication flags from Main-CPU & SUB-CPU (verified on real hardware by Notaz) 2013-10-21 00:25:08 +02:00
EkeEke
14d4074f11 [Core/MCD] fixed pending level 1 interrupts when GFX interrupt is disabled (fixes random freezes out of "Batman Returns" option menu) 2013-10-21 00:19:23 +02:00
EkeEke
400fd5be16 [Core/MCD] added CDC & GFX register polling detection / synchronization 2013-10-21 00:14:44 +02:00
EkeEke
2236072ce9 [Core/MCD] improved Main-CPU & Sub-CPU idle loop detection (fixes "Super League CD") 2013-10-21 00:09:50 +02:00
EkeEke
aede1b9299 rearranged core & back-end specific code (part 2) 2013-06-17 22:31:31 +02:00