| Thu, 27 Apr 2017 23:08:49 -0700 |
Michael Pavone |
Fixes to sprite phase 2 so that sprite X reads use the exact same slot as on hardware in the case that there are fewer than the max number of sprites on each line. Re-read sprite Y from SAT cache during phase 2 and properly mask the calculated row. Fixes remaining issues with spinning cube scene in Overdrive 2.
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| Wed, 26 Apr 2017 22:16:12 -0700 |
Michael Pavone |
Small tweak to how SAT cache updates are done. Mostly fixes the rotating cube scene in Overdrive 2
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| Fri, 21 Apr 2017 01:22:52 -0700 |
Michael Pavone |
Fairly major rework of how active/passive is handled along with how the V30 mode bit is handled. Allows the vertical border extension trick in Overdrive 2 to work right
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| Tue, 18 Apr 2017 19:27:10 -0700 |
Michael Pavone |
Initial stab at implementing the output disable/layer selection bits of the VDP test register
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| Sun, 16 Apr 2017 16:40:04 -0700 |
Michael Pavone |
Initial work on handling the 128KB VRAM mode bit and some basic prep work for VDP test register support
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| Mon, 06 Mar 2017 00:23:35 -0800 |
Michael Pavone |
Initial stab at horizontal border emulation. Only works for H40 and still has a few minor holes to fill
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| Sun, 15 Jan 2017 15:07:24 -0800 |
Michael Pavone |
Initial work on emulating top and bottom border area
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| Thu, 05 Jan 2017 00:36:23 -0800 |
Michael Pavone |
Implemented Mode 4 H conter latching
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| Wed, 04 Jan 2017 20:43:22 -0800 |
Michael Pavone |
Don't lock up CPU if performing a read with writes configured when in PBC mode. Allow access to VDP debug commands from Z80 debugger in PBC mode. Handle Mode 4 in VDP debug print functions
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| Sun, 01 Jan 2017 21:06:32 -0800 |
Michael Pavone |
Update Mode 4 rendering to match logic analyzer captures
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| Tue, 27 Dec 2016 11:31:17 -0800 |
Michael Pavone |
Somewhat broken implementation of Mode 4
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| Thu, 22 Dec 2016 19:51:25 -0800 |
Michael Pavone |
Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful.
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| Mon, 28 Nov 2016 22:45:46 -0800 |
Michael Pavone |
Clean up symbol visiblity and delete a ltitle bit of dead code
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| Mon, 22 Aug 2016 09:46:18 -0700 |
Michael Pavone |
Cleanup the separation of render backend and VDP code in preparation for having extra debug windows. Make determination of H40/H32 based on number of lines in each mode.
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| Mon, 02 May 2016 23:08:20 -0700 |
Michael Pavone |
Fix GST savestate loading to deal with SAT cache to fix sprite corruption on savestate load. Clear out Z80 native_pc so the Z80 state does not get hosed when loading a savestate while the emulator is already running
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| Sat, 30 Apr 2016 15:31:48 -0700 |
Michael Pavone |
Implement SAT cache. Causes some graphical corruption in Overdrive due to an unrelated bug.
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| Sun, 24 Apr 2016 01:24:38 -0700 |
Michael Pavone |
Implemented VDP read prefetch and made DMA copy not use the FIFO any more. Now up to 114 out of 122 passing on VDP FIFO Test ROM
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| Tue, 12 Apr 2016 21:38:24 -0700 |
Michael Pavone |
Remove the int number argument to vdp_int_ack since it is no longer used
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| Thu, 28 Jan 2016 09:10:14 -0800 |
Michael Pavone |
Shift slot number to slot behavior mapping by six slots in H40 mode. This makes the line change slot align with the point at which the display turns on and off at the end of the active display area. Also fixed a regression in which an external slot got accidentally changed into a sprite draw slot
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| Fri, 13 Nov 2015 22:56:59 -0800 |
Michael Pavone |
Selecting a second game from the menu now works
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| Thu, 21 May 2015 00:55:46 -0700 |
Michael Pavone |
Restore the other 2 debug display modes
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| Tue, 19 May 2015 23:23:53 -0700 |
Michael Pavone |
Small correction to VBLANK flag timing. Fixed some inconsistencies in interrupt timing calculation.
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| Sat, 16 May 2015 23:04:57 -0700 |
Michael Pavone |
First pass at emulating a vscroll latch. Titan's Overdrive demo seems to depend on the scroll value being latched early in the line before the HINT gets a chance to change it
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| Mon, 11 May 2015 00:28:47 -0700 |
Michael Pavone |
Sync fixes and logging to fix more sync issues
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| Sun, 04 Jan 2015 23:05:37 -0800 |
Michael Pavone |
Some small synchronization improvements that do not seem to fix anything
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| Wed, 18 Jun 2014 16:30:19 -0700 |
Michael Pavone |
Fix most of the breakage caused by the vcounter/hcounter changes
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| Tue, 17 Jun 2014 19:01:01 -0700 |
Michael Pavone |
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
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| Mon, 07 Oct 2013 10:02:08 -0700 |
Mike Pavone |
Initial implementation of sprite overflow and sprite collision status register flags
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| Tue, 17 Sep 2013 09:45:14 -0700 |
Mike Pavone |
Implement HV counter latch
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| Tue, 17 Sep 2013 00:11:45 -0700 |
Mike Pavone |
Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all.
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| Sun, 15 Sep 2013 22:20:43 -0700 |
Mike Pavone |
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
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| Fri, 13 Sep 2013 19:22:46 -0700 |
Mike Pavone |
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
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| Tue, 10 Sep 2013 23:31:08 -0700 |
Mike Pavone |
Added copyright notice to source files and added GPL license text in COPYING
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| Tue, 10 Sep 2013 00:29:46 -0700 |
Mike Pavone |
Implement FIFO latency and improve DMA accuracy
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| Fri, 26 Jul 2013 19:55:04 -0700 |
Mike Pavone |
Added support for saving savestates. Added gst savestate format test harness
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| Mon, 15 Jul 2013 23:07:45 -0700 |
Mike Pavone |
Restore one of the VDP debugging modes
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| Fri, 12 Jul 2013 19:11:55 -0700 |
Mike Pavone |
Implement the scroll ring buffer properly without memcpy
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| Sun, 30 Jun 2013 11:45:58 -0700 |
Mike Pavone |
Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering
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| Sat, 29 Jun 2013 17:15:08 -0700 |
Mike Pavone |
Add support for loading GST format savestates
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| Sat, 22 Jun 2013 21:19:43 -0700 |
Mike Pavone |
Initial work on interlace
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| Wed, 15 May 2013 22:37:04 -0700 |
Mike Pavone |
Fix background color regsiter number
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| Tue, 14 May 2013 00:40:10 -0700 |
Mike Pavone |
Update Z80 vint timing
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| Mon, 13 May 2013 21:06:08 -0700 |
Mike Pavone |
Added some basic VDP debugging features to debugger. Fixed DMA enable bug
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| Sat, 11 May 2013 22:45:05 -0700 |
Mike Pavone |
Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview.
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| Fri, 10 May 2013 22:57:56 -0700 |
Mike Pavone |
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
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| Mon, 22 Apr 2013 19:39:38 -0700 |
Mike Pavone |
Implemented shadow hilight mode.
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| Sun, 06 Jan 2013 20:49:42 -0800 |
Mike Pavone |
Fix order of SR and PC saved in an exception stack frame
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| Tue, 01 Jan 2013 07:06:57 -0800 |
Mike Pavone |
Make writes to control and data port block when DMA is in progress
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| Mon, 31 Dec 2012 11:26:57 -0800 |
Mike Pavone |
Fix VDP reads
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| Sun, 30 Dec 2012 22:39:41 -0800 |
Mike Pavone |
Implemented HV counter
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| Sun, 30 Dec 2012 01:15:16 -0800 |
Mike Pavone |
Fix bug that was causing DMA fills to lock up under certain circumstances
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| Fri, 21 Dec 2012 20:56:32 -0800 |
Mike Pavone |
Implement DMA (untested)
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| Wed, 19 Dec 2012 22:15:16 -0800 |
Mike Pavone |
Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
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| Tue, 18 Dec 2012 19:51:33 -0800 |
Mike Pavone |
Fix CRAM and possibly VSRAM writes
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| Tue, 18 Dec 2012 02:16:42 -0800 |
Mike Pavone |
Get Flavio's color bar demo kind of sort of working
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| Sun, 09 Dec 2012 18:40:45 -0800 |
Mike Pavone |
Add debug render mode and fix vertical flip bit for bg tiles
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| Sun, 09 Dec 2012 00:03:15 -0800 |
Mike Pavone |
Implement sprite index >= sprite limit triggers sprite limit behavior
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| Sat, 08 Dec 2012 23:49:51 -0800 |
Mike Pavone |
Initial H32 mode support
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| Sat, 08 Dec 2012 22:50:14 -0800 |
Mike Pavone |
Improve sprite masking to almost completely pass Nemesis' sprite masking test
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| Sat, 08 Dec 2012 11:12:17 -0800 |
Mike Pavone |
Sprites somewhat less broken
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