69 commits

Author	SHA1	Message	Date
kub	db2b6d9966	core z80, fix cycle counting in reset state	2024-04-12 20:29:50 +02:00
kub	71f9c68f5b	core z80, improve timing for bus request/grant timing from 68k	2024-03-14 23:18:26 +01:00
kub	d97d056c46	core md, assert z80 vint for complete scanline	2024-02-21 00:29:17 +01:00
kub	ba2b97dc24	core, fix Pico horizontal irq (on irq level 5)	2024-01-20 17:15:51 +01:00
kub	a0ecb29979	core, fix no ym2612 timers if z80 in reset	2023-12-01 01:09:25 +01:00
kub	46b4c1d322	core, optimize vcounter handling	2023-07-17 21:16:38 +02:00
kub	7021622153	core, fix z80 vcounter value	2023-07-12 22:35:33 +02:00
kub	7263343dc7	core, improve 68k timing accuracy	2023-07-11 21:18:05 +00:00
kub	c3d70d1305	sound, improve ym2612 timers implementation	2023-06-23 19:25:52 +00:02
kub	8eeb342641	mcd, some cleanup, fix Word-RAM in 2M mode	2023-05-10 22:20:06 +00:00
kub	f9ed944604	core vdp, avoid rendering if no changes to RAMs/registers ... mainly benefits 32X in faster/fastest rendering mode, 0-5% saved	2023-04-27 22:18:55 +02:00
kub	133006a9d4	core, improve 68K/Z80 timing	2023-04-24 23:50:06 +02:00
kub	134092feb7	md, implement z80 cycle stealing when accessing 68k bus ... this fixes sound issues in Overdrive 2	2023-04-05 20:02:47 +02:00
kub	d515a352b3	core vdp, fix sprite rendering issues with Overdrive 1/2	2023-04-05 20:00:37 +02:00
kub	572cf80e38	core vdp, fix regression (switching V30->V28 in lines 225-239)	2023-02-07 23:10:22 +00:00
kub	2c4675a993	core, fix cpu sync regression	2022-10-16 20:17:42 +00:00
kub	c9d5f41b0a	32x, minor poll detection fix	2022-10-14 18:42:43 +00:00
kub	fdaf9d10bd	core, improve mcd+32x cpu synchronization	2022-10-12 21:44:32 +00:00
kub	099f68c22a	core vdp, fix regression after last commit	2022-02-15 22:15:12 +00:00
kub	3b68e5107d	core vdp, fix obscure VInt bug, some more optimisation	2022-02-14 20:55:35 +00:00
kub	9f1d5acdb4	sound, fix pcm/pwm handling wrt fast forward (mcd, 32x, pico)	2022-02-07 21:09:13 +00:00
kub	02d753e346	md, fix irq priority handling for H-int	2021-04-10 21:34:48 +02:00
kub	dda72beae4	vdp, fix for 68k access timing	2020-12-12 17:29:31 +01:00
kub	8d67848ddf	fix for 68K cycle accounting	2020-03-27 19:27:05 +01:00
kub	c55a44a88c	vdp fifo speed optimization	2020-03-14 19:52:27 +01:00
kub	478a1164fe	fix for VINT while DMA is running	2020-02-27 21:19:37 +01:00
kub	17bd69adc6	revised VDP fifo implementation	2020-02-07 22:14:34 +01:00
kub	1259ac4f60	VDP timing improvements	2020-01-26 20:46:21 +01:00
kub	43e1401008	emulator timing fixes, VDP DMA fixes, improved DAC audio	2020-01-14 23:00:44 +01:00
kub	8ac9ab7fcb	audio: added SSG-EG to YM2612, plus some timing changes for SN76496+YM2612	2020-01-08 00:49:13 +01:00
notaz	0a0073dc9f	fix a corner case with h-int	2018-01-28 19:13:01 +02:00
notaz	6311a3baf5	move more globals to PicoInterface ... similar reasons as before	2017-10-22 02:13:46 +03:00
notaz	35f2b65ef7	add 68k overclocking support	2017-10-20 12:21:09 +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	12f23dac6f	famec: split fm68k_emulate ... in FAMEC_NO_GOTOS mode at least	2017-10-15 00:45:55 +03:00
notaz	e9a11abb3c	drop some unnecessary inlines ... apparently somebody compiles with msvc?	2017-10-14 00:53:09 +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	3162a7104c	adjust z80 timing a bit	2017-10-12 02:54:46 +03:00
notaz	e42a47e208	some more risky timing changes ... But should be closer to the real thing. Let's see what this will break...	2017-10-12 02:54:41 +03:00
notaz	5d638db094	handle frequent psg updates	2017-10-07 01:36:59 +03:00
notaz	4f2cdbf551	clean up dac code a bit	2017-10-07 01:36:59 +03:00
notaz	ea38612fad	eliminate texrels (wip)	2017-08-06 18:18:29 +03:00
notaz	99ade2ee2f	famec: remove unused dual code	2013-09-24 03:57:43 +03:00
notaz	fa8fb75445	handle 32x+cd	2013-09-16 02:03:29 +03:00
notaz	a4dfdb6de1	general timing hacks	2013-09-06 02:40:37 +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	89dbbf2b2f	rename cd/pico.c -> cd/mcd.c	2013-08-28 02:24:46 +03:00