50 commits

Author	SHA1	Message	Date
kub	dda72beae4	vdp, fix for 68k access timing	2020-12-12 17:29:31 +01:00
kub	1613ec6c30	vdp, kludge for z80 access	2020-12-12 17:27:30 +01:00
kub	3618d636d2	vdp rendering, fix SAT caching for high addresses >64KB	2020-10-07 20:12:23 +02:00
kub	e721f80136	vdp, fix for gfx save/load menu bg	2020-09-21 21:02:51 +02:00
kub	dc56ca2ede	vdp fifo, tentative fix for hanging DMA	2020-09-18 00:25:14 +02:00
kub	bb83412c51	vdp fifo, DMA bugfix	2020-06-21 22:32:37 +02:00
kub	2a2e0f890a	vdp fifo, bugfix	2020-04-22 21:51:35 +02:00
kub	86198e034b	vdp DMA optimizations	2020-04-02 20:18:39 +02:00
kub	02138162c4	vdp fifo speed optimization	2020-03-27 19:32:45 +01:00
kub	bd73e6eec0	vdp rendering, fix for CD (sprites from WORD RAM)	2020-03-27 19:22:19 +01:00
kub	c55a44a88c	vdp fifo speed optimization	2020-03-14 19:52:27 +01:00
kub	20fafa7127	hvcounter table resolution reduced	2020-03-14 19:30:28 +01:00
kub	b6bdccb747	vdp, some small improvements	2020-03-03 20:32:38 +01:00
kub	49790e265a	vdp, tentative fix for save/load compatibility	2020-02-27 21:31:04 +01:00
kub	3c6da92ba0	vdp fifo, refined timing	2020-02-26 20:27:32 +01:00
kub	e72bc9099c	vdp sprite rendering fix	2020-02-23 20:15:07 +01:00
kub	787a0af9dc	vdp fifo, another revision	2020-02-23 11:33:02 +01:00
kub	25be5c52b0	vdp sprite handling improvement (SAT cache)	2020-02-16 14:10:14 +01:00
kub	daf29df963	vdp fifo, tentative fix for broken save/load	2020-02-16 14:08:48 +01:00
kub	987f079749	vdp fifo: kludge for DMA fill interrupted by CPU	2020-02-08 23:42:34 +01:00
kub	17bd69adc6	revised VDP fifo implementation	2020-02-07 22:14:34 +01:00
kub	e1e7d1ed1c	improved VRAM128K support (overdrive 2)	2020-01-26 20:48:25 +01:00
kub	1259ac4f60	VDP timing improvements	2020-01-26 20:46:21 +01:00
kub	5f0d224e18	sprite rendering improvements for masking and limit edge cases	2020-01-26 20:40:07 +01:00
kub	43e1401008	emulator timing fixes, VDP DMA fixes, improved DAC audio	2020-01-14 23:00:44 +01:00
kub	b1a047c926	reworked palette and buffer handling due to some 32X bugs	2019-07-30 16:34:40 +02:00
kub	2c479106af	arm asm syntax fixes for open2x	2019-07-30 16:34:40 +02:00
notaz	310d973b9e	don't spam DMA message ... VR US triggers this	2018-01-21 19:03:51 +02:00
notaz	eef77d7a8b	handle 'bad' dma better	2017-10-21 00:02:38 +03:00
notaz	93f9619ed8	rearrange globals ... scripted find/replace gives slightly better code on ARM, less unnecessary asm, ~400 bytes saved	2017-10-20 12:21:09 +03:00
notaz	0e4bde9b2d	rework sr ... note to self: h32 0x10A .. 0x127 0x1D2 .. 0x1FF 0x000 .. 0x109 pclk 30 | 46 | 266 = 342 hbset 0x126 ... 0x009 pclk 29 | 1 + 46 + 10 | 256 mclk 290 | 570 | 2560 = 3420 68kclk 41.4 81.4 365.7 ~= 488.5 h40 0x14A .. 0x16C 0x1C9 .. 0x1FF 0x000 .. 0x149 pclk 35 | 55 | 330 = 420 hbset 0x166 ... 0x00A pclk 28 | 7 + 55 + 11 | 319 mclk 28*8 | 7*8 4*8+314+10+(18+11)*8 | 319*8 = 3420 68kclk 32 92 364.5 ~= 488.5	2017-10-14 00:53:08 +03:00
notaz	22814963cc	some irq hacks ... notes to self (derived from Nemesis): H32: 0x10A .. 0x127 0x1D2 .. 0x1FF 0x000 0x001 pclk 30 46 1 |0x109 mclk 770 | 2650 = 3420 68kclk 110 378.5 ~= 488.5 H40: 0x14A .. 0x16C 0x1C9 .. 0x1FF 0x000 0x001 pclk 35 55 1 mclk 35*8 4*8+314+10+19*8 |0x149*8 788 | 2632 = 3420 68kclk 112.5 376 ~= 488.5	2017-10-14 00:53:08 +03:00
notaz	88fd63ad10	split memories away from Pico ... saves ~3k of code on ARM because Pico no longer crosses ldr limit	2017-10-14 00:53:08 +03:00
notaz	334f00e24e	vdp timing hacks	2017-10-12 02:56:09 +03:00
notaz	ebd70cb5d9	fix various logging issues	2017-10-12 02:54:46 +03:00
notaz	75b84e4b7c	slightly better z80 vdp reads	2017-10-07 01:36:59 +03:00
notaz	e0bcb7a90d	some support for vdp debug reg	2017-10-03 00:41:13 +03:00
notaz	b71cbbf705	some support for 128k mode	2017-10-03 00:41:10 +03:00
notaz	0c7d1ba332	some dma improvements ... no idea if anything needs this, shouldn't hurt either	2017-10-03 00:40:21 +03:00
notaz	7feeb88062	make dma honour banking ... I was sure I had it done before, turns out not.	2017-09-30 20:53:11 +03:00
notaz	ea38612fad	eliminate texrels (wip)	2017-08-06 18:18:29 +03:00
notaz	a93a80deda	cd: integrate new gfx code	2013-09-23 02:11:26 +03:00
notaz	53f948c901	make hcnt code friendly with split timeslices ... values need to be fixed, they're wrong, wrong wrong...	2013-09-03 02:52:07 +03:00
notaz	08769494e8	cd sync improvements, part2	2013-08-28 02:05:21 +03:00
notaz	ae214f1c37	new timing for main and cd	2013-08-28 01:07:26 +03:00
notaz	e7b3ad1bda	avoid unnecessary logging	2013-07-31 02:58:04 +03:00
notaz	cff531af94	clarify PicoDrive's license ... - PicoDrive was originally released by fDave with simple "free for non-commercial use / For commercial use, separate licencing terms must be obtained" license and I kept it in my releases. - in 2011, fDave re-released his code (same that I used as base many years ago) dual licensed with GPLv2 and MAME licenses: https://code.google.com/p/cyclone68000/ Based on the above I now proclaim that the whole source code is licensed under the MAME license as more elaborate form of "for non-commercial use". If that raises any doubt, I announce that all my modifications (which is the vast majority of code by now) is licensed under the MAME license, as it reads in COPYING file in this commit. This does not affect ym2612.c/sn76496.c that were MAME licensed already from the beginning.	2013-06-26 03:07:07 +03:00
notaz	697746df02	revive pandora and win32 builds, rm gp2x dep for linux, lots of refactoring ... git-svn-id: file:///home/notaz/opt/svn/PicoDrive@842 be3aeb3a-fb24-0410-a615-afba39da0efa	2009-12-16 23:38:37 +00:00
notaz	ef090115c8	switch DMNA Silpheed hack to timeslice hack ... git-svn-id: file:///home/notaz/opt/svn/PicoDrive@747 be3aeb3a-fb24-0410-a615-afba39da0efa	2009-08-12 14:06:40 +00:00
notaz	1cfc5cc4ce	lowercasing filenames, part3 ... git-svn-id: file:///home/notaz/opt/svn/PicoDrive@576 be3aeb3a-fb24-0410-a615-afba39da0efa	2008-08-28 12:36:57 +00:00

Renamed from Pico/videoport.c (Browse further)