Max/SameBoy
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173 Commits

Author SHA1 Message Date
Lior Halphon
855ffb490a A HBlank interrupt cannot occur in the last M-cycle of HBlank. Correct emulation of STAT access conflicts on the CGB (Test: CPU-E, single speed only). Fixes a minor graphical glitch in Pokémon Puzzle Challenge. 2018-05-25 23:42:36 +03:00
Lior Halphon
713dc02e46 A bit tacky, but T-cycle accurate emulation of LYC write conflicts on the CGB. Only single speed mode verified. Closes #54 2018-05-11 12:38:55 +03:00
Lior Halphon
af3554c1d1 More accurate emulation of the LYC register and interrupt. (Still not perfect on a CGB) 2018-04-27 13:40:39 +03:00
Lior Halphon
0f8385a798 Refined line 153 behavior on a CGB. Verified on CGB-E. 2018-04-25 00:08:06 +03:00
Lior Halphon
5be2b3db29 It appears that OAM DMA blocks PPU access to OAM 2018-04-07 13:59:36 +03:00
Lior Halphon
0725b008be Further simplifications 2018-04-07 13:02:53 +03:00
Lior Halphon
097b768127 Update comments 2018-04-07 03:36:47 +03:00
Lior Halphon
9ce028056a Cleanup 2018-04-07 03:26:10 +03:00
Lior Halphon
fed2556fc3 More reasonable implementation of sprite timings 2018-04-07 03:00:26 +03:00
Lior Halphon
0751eae90b Moved the fetcher state machine to another function 2018-04-06 19:29:49 +03:00
Lior Halphon
0461fb5b2a Simplified FIFO logic 2018-04-06 19:11:48 +03:00
Lior Halphon
cb01259073 Fixed #61 2018-04-06 11:37:49 +03:00
Lior Halphon
a6ed2029b7 New information about PPU changes between CGB-B and CGB-E 2018-04-06 03:19:47 +03:00
Lior Halphon
cc95c89d3c Surprise! The CGB has a 16-bit VRAM data bus 2018-04-05 16:15:51 +03:00
Lior Halphon
9aadc80f75 Implemented some obscure PPU rendering quirks, verified some timings 2018-04-05 15:33:21 +03:00
Lior Halphon
d785e45308 More accurate emulation of LCDC.0 2018-04-05 12:27:01 +03:00
Lior Halphon
d8e0683c35 Fixed a bug where skipping a sprite by modifying LCDC flags mid-scanline will disable sprites for the rest of the scalene. 2018-04-05 00:51:37 +03:00
Lior Halphon
5d63892949 T-cycle accurate timing of the extra OAM interrupt. Fixes vblank_stat_intr-GS, related to #54 2018-04-03 01:43:24 +03:00
Lior Halphon
e163026ca9 The STAT bug does not occur during the glitched mode 0 2018-04-02 01:05:32 +03:00
Lior Halphon
9339a6027f Slight refinement to the last fix 2018-04-01 22:20:26 +03:00
Lior Halphon
ec64c041ab The OAM interrupt is internally implemented differently from the other 3. Fixed the stat_write_if tests, relates to #54 2018-04-01 21:45:56 +03:00
Lior Halphon
73dc3560a5 Mode 0 interrupts do not occur in the glitched mode 0 of the first line 0. The extra OAM interrupt bug also affects DMG. 2018-03-31 13:18:02 +03:00
Lior Halphon
0a2d6e6dcb Fixed DMG timing regression 2018-03-31 12:21:34 +03:00
Lior Halphon
9811dceca1 Emulate another OAM timing quirk; a sprite at x = 0 has extra penalty if SCX is not 0. Fixes intr_2_mode0_timing_sprites_scx*_nops, affects #54 2018-03-30 17:06:27 +03:00
Lior Halphon
2c44ffbe39 More accurate fetcher penalty emulation, fixed intr_2_mode0_timing_sprites_nops, affects #54 2018-03-30 02:53:49 +03:00
Kyle Swanson
7bfe5de9c7 chmod -x 2018-03-28 21:37:34 -07:00
Lior Halphon
0e3d2770d9 Properly handle cases where an object’s X position is modified between the OAM mode and rendering mode 2018-03-27 22:13:08 +03:00
Lior Halphon
4986930511 Mostly complete emulation of the OAM bug. Passes oam_bug-2. 2018-03-27 15:46:00 +03:00
Lior Halphon
5cb74fb684 Bugfix: turning the PPU off during OAM mode made the OAM bug persist while the LCD is off 2018-03-24 02:58:37 +03:00
Lior Halphon
4e3928df81 Turns out the behavior differs between DMG and CGB – in DMG mode, the objects enabled bit is checked before halting the FIFOs, meaning that disabled sprites do not affect Mode 3’s length on the DMG. 2018-03-23 20:01:27 +03:00
Lior Halphon
48a8db233d Refinement to the last fix 2018-03-23 19:54:11 +03:00
Lior Halphon
e9eeace995 The object enabled bit is checked only when popping from the object FIFO. Objects affect timing even when disabled. 2018-03-23 19:50:19 +03:00
Lior Halphon
04bfc89816 Cycle accurate OAM search mode 2018-03-23 19:07:14 +03:00
Lior Halphon
c11af7ea26 Fix CGB timings 2018-03-23 12:58:51 +03:00
Lior Halphon
e9f243a913 Fix sprite priority 2018-03-21 00:02:35 +02:00
Lior Halphon
cb33a5b25a Fix Aevilla 2018-03-20 20:08:29 +02:00
Lior Halphon
3883b7d86a Merge branch 'master' into timing 
# Conflicts:
#	Core/display.c
#	Core/z80_cpu.c
 2018-03-19 23:46:33 +02:00
Lior Halphon
b50c97f4a7 Prevent starting HDMA in the middle of an instruction, making both the CPU and DMA access memory at the same time. Closes #47 2018-03-19 20:01:31 +02:00
Lior Halphon
202eb2b5cc Fix stat_lyc_onoff 2018-03-18 20:32:19 +02:00
Lior Halphon
80b1275e07 Fix stat_lyc_onoff 2018-03-18 20:08:45 +02:00
Lior Halphon
12ae5745db While fixing some rendering issues, this change was incorrect. 2018-03-17 21:04:48 +02:00
Lior Halphon
269bac4626 More CGB fixes 2018-03-17 20:34:55 +02:00
Lior Halphon
21b75494a2 More CGB fixes (currently on DMG-mode CGB is verified). Halt interrupt timing isn’t correct yet. 2018-03-11 00:17:57 +02:00
Lior Halphon
15b6c48d7c Fixed vblank_stat_intr-C 2018-03-10 15:52:22 +02:00
Lior Halphon
c267ad00b5 Goodbye 2018-03-09 23:34:23 +02:00
Lior Halphon
e8b107efdb In double speed mode, there are no quirks where IF and STAT don’t update together 2018-03-09 23:31:49 +02:00
Lior Halphon
cb6bb0590e Starting to fix CGB timing quirks 2018-03-09 21:11:35 +02:00
Lior Halphon
9083e883fe CGB BG rendering 2018-03-09 18:52:36 +02:00
Lior Halphon
a32f232bb1 Fixed OAM-window priority glitch, fixed OAM glitch in Prehistoric Man 2018-03-09 17:10:19 +02:00
Lior Halphon
1149c266cf More regression fixes, actually fix Pinball Deluxe this time 2018-03-08 23:22:03 +02:00
Lior Halphon
544ca2be4c Changing the timings of memory writes so they’re not effectively one T-cycle late. This screws up APU’s cycle accuracy for now. 2018-03-05 21:17:37 +02:00
Lior Halphon
88a11b891f Object rendering 2018-03-04 23:27:31 +02:00
Lior Halphon
3d1c8b50c4 OAM search and OAM timing in mode 3 2018-03-04 22:21:56 +02:00
Lior Halphon
476133abd0 The scrolled y value is cached and not recalculated 2018-03-03 20:51:38 +02:00
Lior Halphon
518746f664 fixed rendering off by one 2018-03-03 19:52:48 +02:00
Lior Halphon
496c5589e6 Added window support 2018-03-03 19:36:21 +02:00
Lior Halphon
5ea33cc931 Cleanup 2018-03-03 19:05:29 +02:00
Lior Halphon
b08f02c4f3 Rewriting the PPU rendering: T-cycle accurate background rendering. DMG only, CGB completely broken 2018-03-03 15:47:36 +02:00
Lior Halphon
a67db0595b Fixed window behavior 2018-03-01 22:03:56 +02:00
Lior Halphon
7248403be7 Fixed several DMG regressions, fixes Pinball Deluxe again 2018-03-01 00:12:04 +02:00
Lior Halphon
90a943d05a Emulate an HDMA quirk required to properly emulate Aevilia 2018-02-25 22:32:41 +02:00
Lior Halphon
ef670986c6 Rewrote PPU (currently only emulates DMG correctly) to use the new timing mechanism. Removed “future interrupts” (No longer required because SameBoy is now T-cycle based) 2018-02-25 00:48:45 +02:00
Lior Halphon
42ab746a66 Starting to remove the delayed interrupts hack – done for timer interrupt, broken for display interrupts 2018-02-23 15:33:44 +02:00
Lior Halphon
56eac9f875 Removed some dead code from display.c 2018-02-20 21:23:27 +02:00
Lior Halphon
9802ca41dd Components not affected by CGB’s double speed mode now operate in 8MHz mode to theoretically make advance_cycles(gb, 1) safe. 2018-02-20 21:17:12 +02:00
Lior Halphon
1c61b006ba Added rewinding support to the core and the Cocoa frontend 2018-02-10 14:42:14 +02:00
Lior Halphon
f0e772ca97 Fixed: Loading states in DMG mode results in a black screen 2017-12-22 21:58:31 +02:00
Lior Halphon
e71154b7e0 Fixed set_color_correction breaking DMG’s palette 2017-10-16 20:48:39 +03:00
Lior Halphon
65dd02cc52 Added 3 color correction profiles, added color correction setting to Cocoa GUI, improved cross-platform and cross-frontend save-state compatibility 2017-10-12 17:22:22 +03:00
Lior Halphon
7a41a9b417 Refined OAM interrupt timing. Fixes Pinball Deluxe in DMG mode; closes #1. 2017-09-23 21:08:05 +03:00
Lior Halphon
09b7e2fff4 Fixed a bug in scx_delay’s calculation 2017-09-11 23:56:35 +03:00
Lior Halphon
02841ddde6 Whoops 2017-09-09 16:55:55 +03:00
Lior Halphon
026baddbab Implemented delayed/future interrupts for DMG hblank interrupt. Restores vblank_stat_intr-GS support. 2017-09-09 13:45:01 +03:00
Lior Halphon
1e90400916 Reimplemented delayed/future interrupts, currently correct only for CGB. 2017-09-09 13:32:12 +03:00
Lior Halphon
742c9e95d3 Updated previous timing improvements to correctly implement double speed behavior 2017-09-08 23:46:38 +03:00
Lior Halphon
e5d354e896 Refined SCX’s effects on PPU timing 2017-09-08 23:02:24 +03:00
Lior Halphon
0f1fa3176f Refinements to LCD timing (breaks vblank_stat_intr-GS for now) 2017-09-08 12:59:57 +03:00
Lior Halphon
0f643e01b7 Removing the delayed interrupt mechanism, research is not complete enough for implementation 2017-09-08 12:58:35 +03:00
Lior Halphon
9bde98dede SCY latching is now correctly emulated, rendering mode timing refined. 2017-09-04 15:45:18 +03:00
Lior Halphon
a1a13c61bf On CGB, the VBlank and STAT interrupts are “delayed” by one T-cycle (relative to IF) since they’re not aligned to a T-Cycle 2017-09-03 00:41:52 +03:00
Lior Halphon
0532d2a159 A test ROM I wrote seems to contradicts some of AntonioND’s findings regrading PPU timing in CGB mode. CGB mode now behaves like DMG mode until I figure out what caused the difference. 2017-09-02 23:51:02 +03:00
Lior Halphon
9b490396bb Fixed timing when turning the LCD display on during double speed mode 2017-09-02 23:26:45 +03:00
Lior Halphon
cbbaf2ee84 Refined Window behavior once more, Fixes #12 (While not breaking Donkey Kong or 007) 2017-08-20 01:34:12 +03:00
Lior Halphon
7df4e56454 KEY1 is only writable in CGB mode; screen should be black is LCD is on while in stop mode. 2017-08-12 21:42:47 +03:00
Lior Halphon
c59272d46d Misc minor fixes, fixes several Mooneye-GB tests 2017-06-21 20:39:23 +03:00
Lior Halphon
abf7efcc5a Fixed lcdon_write_timing. 2017-06-18 21:27:07 +03:00
Lior Halphon
86c9f9d89d Updated SameBoy to pass Mooneye-GB’s lcdon_timing test (on a DMG), as well as refined related CBG behaviors. 2017-06-17 22:17:58 +03:00
Lior Halphon
a9475fbdf4 Refined the behavior of the last fix on a DMG. 2017-06-03 20:06:52 +03:00
Lior Halphon
d72807dd67 Implemented LCD first-frame-skip behavior, fixes a visual glitch in Pokémon Pinball 2017-06-03 16:42:42 +03:00
Lior Halphon
22ee6f6ca2 Fixed incorrect calculation in rendering timing. Fixes some of the issues in Prehistorik Man (and doesn’t break GBVideoPlayer) 2017-05-31 23:58:14 +03:00
Lior Halphon
9b89d76b3b Todo cleanup 2017-05-27 17:30:12 +03:00
Lior Halphon
4d5dc6a30e Cleanup 2017-05-24 21:44:43 +03:00
Lior Halphon
86332d0311 Modifying WX and WY outside of VBlank is now more accurate, but still requires more research. Closes #6. 2017-05-12 19:33:42 +03:00
Lior Halphon
c766704267 More accurate FPS capping that tracks time correctly even when the screen is off. Should also support restarting the LCD during blank to increase FPS to 63. 2017-04-21 16:00:53 +03:00
Lior Halphon
fb55c35f87 New APIs, Document.m no longer requires GB_INTERNAL, fixed a bug where the sprite viewer showed incorrect sprites for some CGB exclusive games. 2017-04-19 23:26:39 +03:00
Lior Halphon
3feaeb153e New turbo related APIs, Quick Look no longer requires GB_INTERNAL 2017-04-19 21:55:58 +03:00
Lior Halphon
a925ef130d Stabilizing API: New joypad, debugger and reset APIs; internal APIs and direct struct access are no longer available without defining GB_INTERNAL. The SDL port uses the new “public” APIs, as well as most of the non-debug Cocoa code. 2017-04-17 20:16:17 +03:00
Lior Halphon
4bf391b1c8 SCX now effects Mode 3’s length. Fixes hblank_ly_scx_timing-GS 2017-02-25 23:30:31 +02:00
Lior Halphon
319857db89 Fixed window behavior 2017-02-24 00:59:07 +02:00
Lior Halphon
c5ce14dad1 Prevent Hblank HDMAs when the LCD is off 2017-02-21 22:33:09 +02:00