| Sun, 15 Jan 2017 22:38:31 -0800 |
Michael Pavone |
Rework how inactive lines are handled. Fix H40 cycle increment in slot 182
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| Sun, 15 Jan 2017 15:29:32 -0800 |
Michael Pavone |
Fix benchmark mode
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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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| Mon, 09 Jan 2017 19:24:11 -0800 |
Michael Pavone |
Fix disagreement on line change location between vdp_h32_mode4 and vdp_run_context that was causing the first line to be garbage in some cases
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| Sun, 08 Jan 2017 13:39:44 -0800 |
Michael Pavone |
A bunch of Mode 4 fixes
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| Sun, 08 Jan 2017 10:46:32 -0800 |
Michael Pavone |
Update H32 and Mode 4 mappings based on latest tests
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| Fri, 06 Jan 2017 19:25:04 -0800 |
Michael Pavone |
Fix H40 slot mapping to better match old VRAM bus captures and adjust for recent VCounter measurements
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| Thu, 05 Jan 2017 19:15:53 -0800 |
Michael Pavone |
Clear sprite overflow flag when control port read. Fix vcounter progression in Mode 4
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| Thu, 05 Jan 2017 00:42:11 -0800 |
Michael Pavone |
Fix Mode 4 sprite collision flag
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| Thu, 05 Jan 2017 00:36:23 -0800 |
Michael Pavone |
Implemented Mode 4 H conter latching
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| Thu, 05 Jan 2017 00:08:28 -0800 |
Michael Pavone |
BlastEm now passes all of the tests on the first page of "Megadrive VDP Test" in VDPTEST.sms
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| Wed, 04 Jan 2017 23:01:58 -0800 |
Michael Pavone |
Fix to pass a couple more tests in VDPTEST.sms
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| Wed, 04 Jan 2017 22:48:00 -0800 |
Michael Pavone |
Fix some issues with VDP interface in Mode 4/PBC mode
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| Wed, 04 Jan 2017 21:23:59 -0800 |
Michael Pavone |
Display both byte and word pending values to better reflect VDP pending state in PBC mode
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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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| Mon, 02 Jan 2017 16:25:13 -0800 |
Michael Pavone |
Fix Mode 4 sprite table Y scan to account for VRAM byte swapping
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| Sun, 01 Jan 2017 23:00:28 -0800 |
Michael Pavone |
Fix slot tracking screwup
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| Sun, 01 Jan 2017 22:47:23 -0800 |
Michael Pavone |
Fix horizontal scrolling in Mode 4
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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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| Sun, 01 Jan 2017 02:33:06 -0800 |
Michael Pavone |
Fix a bug in hslot advancement in Mode 4. Fix some of the "inactive_start" calculations that did not take into account Mode 4.
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| Sun, 01 Jan 2017 01:23:26 -0800 |
Michael Pavone |
Make Mode 4 sprite rendering a little less broken
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| Sun, 01 Jan 2017 01:16:43 -0800 |
Michael Pavone |
Fix rendering of BG color index 0 in Mode 4. Only transparent with respect to sprites and not the backdrop like in Mode 5
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| Tue, 27 Dec 2016 14:31:27 -0800 |
Michael Pavone |
Fix Mode 4 color mapping
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| Tue, 27 Dec 2016 13:46:06 -0800 |
Michael Pavone |
Brighten up Mode 4 colors
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| Tue, 27 Dec 2016 13:38:58 -0800 |
Michael Pavone |
The function of the HVC Latch enable bit in mode register 1 is different when not in mode 5
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| Tue, 27 Dec 2016 13:26:14 -0800 |
Michael Pavone |
Fix inactive start line for Mode 4 in vdp_next_hint. Fix an off by one error in the range of registers allowed to be written in Mode 4
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| Tue, 27 Dec 2016 13:11:07 -0800 |
Michael Pavone |
Implemented Mode 4 sprite list termination
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| Tue, 27 Dec 2016 12:43:37 -0800 |
Michael Pavone |
Less broken Mode 4 implementation
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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, 12 Dec 2016 09:50:33 -0800 |
Michael Pavone |
Fix field flag handling bug introduced with VDP/render interface cleanup
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| Fri, 09 Dec 2016 09:48:48 -0800 |
Michael Pavone |
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
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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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| Fri, 12 Aug 2016 09:39:39 -0700 |
Michael Pavone |
Removed obsolete TOOD
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| Sun, 15 May 2016 16:22:45 -0700 |
Michael Pavone |
Fix bug in vflip implementation when in double resolution interlace mode
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| Wed, 11 May 2016 22:43:18 -0700 |
Michael Pavone |
Fix implementation of sprite collision flag. Old implementation did not make sense.
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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 20:57:29 -0700 |
Michael Pavone |
Fix bug in SAT cache address calculation that caused a crash in Strider II
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| Sat, 30 Apr 2016 16:19:57 -0700 |
Michael Pavone |
Added TODO for hardware checking
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| Sat, 30 Apr 2016 16:19:19 -0700 |
Michael Pavone |
Set sprite overflow flag if we completely consume sprite rendering capacity for the line even if there is nothing left to draw. This graphical corruption in the vertical stretching scroll section. Needs hardware confirmation.
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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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| Sat, 30 Apr 2016 08:37:55 -0700 |
Michael Pavone |
Fix some stuff with interrupt timing. The change in adjust_int_cycle gets Overdrive working again (vint was not being preferred over hint in some cases). One of the changes seems to have broken Fatal Rewind again, but no other regressions that I can see.
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| Wed, 27 Apr 2016 23:57:00 -0700 |
Michael Pavone |
Properly emulate machine freeze when reading from VDP while configured for writes
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| Sun, 24 Apr 2016 14:30:15 -0700 |
Michael Pavone |
FIFO should show as empty during a DMA fill after the initial write is done. BlastEm now gets a perfect score in VDP FIFO Testing
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| Sun, 24 Apr 2016 11:53:59 -0700 |
Michael Pavone |
Fixes to the DMA busy flag and DMA fill. Now up to 120/122 on VDP FIFO Testing.
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| Sun, 24 Apr 2016 02:19:48 -0700 |
Michael Pavone |
Half assed, prefetch based open bus value emulation. Gets BlastEm up to 119/122 in VDP FIFO Testing
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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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| Tue, 12 Apr 2016 08:35:44 -0700 |
Michael Pavone |
Fix VDP interrupt ack. Big thanks to Eke-Eke or whoever left that helpful comment in Genesis Plus GX. Fixes Fatal Rewind
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| Tue, 02 Feb 2016 18:33:00 -0800 |
Michael Pavone |
Change the sentinel value for the hslot parameter of run_dma_src to something that is not a valid slot number and actually use it for calls during the active display period
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| Tue, 02 Feb 2016 18:24:15 -0800 |
Michael Pavone |
Perform the same slot mapping shift for H32 mode as I did for H40
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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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| Tue, 26 Jan 2016 19:23:10 -0800 |
Michael Pavone |
After reviewing the results of my test ROM again it seems pretty clear that the VBlank flag gets set at the same time as the vcounter changes
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| Sun, 17 Jan 2016 14:46:12 -0800 |
Michael Pavone |
Fix calculation of window start column when it's on the right side. This removes graphical glitches in Afterburner 2, Fireshark and Dungeons and Dragons: Warriors of the Eternal Sun and probably others
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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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| Mon, 03 Aug 2015 20:06:56 -0700 |
Michael Pavone |
Pretty decent optimization of vdp_h40 and vdp_h32. Gets reasonably close to the speed of 0.2.0 in the worst case and is faster than 0.2.0 in others
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| Fri, 17 Jul 2015 08:49:23 -0700 |
Michael Pavone |
Add ability to change start address for VRAM viewer. Fix handling of DMA enable flag when it comes to DMA fills. This fixes a bug in James Pond 3
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| Sun, 28 Jun 2015 09:53:17 -0700 |
Michael Pavone |
More clang warning cleanup
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| Sat, 30 May 2015 15:53:59 -0700 |
Michael Pavone |
Fixed shadow/highlight mode
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