Commit Graph

112 Commits

Author SHA1 Message Date
saxxonpike 49a847d8bc commodore64: VIC timing fix, implemented new cartridge I/O which handles writes into ROM addresses (apparently some carts use this) 2012-11-28 03:30:59 +00:00
saxxonpike 46e13a6a57 commodore64: only initialize RAM array on instantiation, memory already cleared in HardReset 2012-11-27 21:03:01 +00:00
saxxonpike e44c6cfa55 commodore64: RAM striping 00/FF 2012-11-27 20:47:03 +00:00
saxxonpike ccc332f8e2 commodore64: unconnected pin values in the 6510 I/O port $01 register fade over time (Aurora90%), need to verify the TTL on that sometime 2012-11-27 20:23:27 +00:00
saxxonpike 178e1a4518 commodore64: fill in fetch code 2012-11-27 06:21:46 +00:00
saxxonpike 95d228f413 commodore64: new core with focus on low-level comm between chips and activity on both phases of the clock 2012-11-27 05:11:40 +00:00
adelikat 5433bdacfd Use coreoutputcomm for led light feature 2012-11-26 01:43:34 +00:00
goyuken 0094562d2a per previous discussion, IEmulator.ResetFrameCounter() should reset lag frame related stuff as well 2012-11-25 15:41:40 +00:00
saxxonpike 557f2c8815 commodore64: Tie AEC between Vic and Cpu, tie BA from Vic to RDY on Cpu. Results in better emulation of CPU bus shutdown 2012-11-25 06:33:04 +00:00
saxxonpike 4ffce9e5f9 commodore64: slight performance gain, video rendering pipeline structure rebuilt for flexibility (for pending changes) 2012-11-24 06:20:49 +00:00
saxxonpike af355f6d5b commodore64: clean up video code, remove unused VIC emulation 2012-11-24 02:10:05 +00:00
saxxonpike 64fcb75723 commodore64: a little hack to emulate the 6502 RDY pin behavior 2012-11-23 14:39:09 +00:00
saxxonpike 24ee005be7 commodore64: badline timing fix 2012-11-23 12:02:26 +00:00
saxxonpike 710f8f07c9 commodore64: video is now more cycle accurate on NTSC 2012-11-22 15:48:48 +00:00
saxxonpike 155d185fe5 commodore64: further work on video code 2012-11-22 06:40:16 +00:00
saxxonpike 7114ecd914 commodore64: more work on new video code 2012-11-21 20:39:51 +00:00
saxxonpike 484545fef6 commodore64: restructuring of VIC code for video glitch fixes 2012-11-21 06:55:53 +00:00
saxxonpike 381b064d2a commodore64: fix sprite priority (no longer always in background) 2012-11-21 02:45:14 +00:00
saxxonpike bc06a1c59a commodore64: savestates implemented on all chips and connected 2012-11-21 01:30:54 +00:00
saxxonpike dab0a0dd38 commodore64: add VIC chip savestate code (not connected) 2012-11-20 03:45:58 +00:00
saxxonpike 6560900e6e commodore64: CIA chip savestate code added (not connected) 2012-11-20 02:37:42 +00:00
saxxonpike 6bf640c4bc commodore64: more savestate work, volume register in SID now actually affects volume level 2012-11-19 21:18:16 +00:00
saxxonpike fddbf1197b commodore64: fix build error in savestate code 2012-11-19 20:35:27 +00:00
saxxonpike a304b5666b commodore64: savestate code added (not connected yet, devices still need to report state) 2012-11-19 19:07:38 +00:00
saxxonpike 8d6e55e2a9 commodore64: implement proper lag frame counting 2012-11-19 16:38:39 +00:00
saxxonpike 41dbbcb8b7 commodore64: more accurate FPS calculation 2012-11-18 12:10:58 +00:00
saxxonpike 90c3ce03c0 commodore64: complete VIC rewrite. PAL timing corrected (should run at around 50fps now). Region left on PAL for further timing debugging. 2012-11-18 10:25:57 +00:00
saxxonpike c1556de4a4 commodore64: work begins on alternate VIC emulation 2012-11-17 06:03:44 +00:00
saxxonpike 0a8355ce1a commodore64: full PAL support across all chips, better HardReset behavior 2012-11-17 03:58:06 +00:00
saxxonpike fff3b623e8 commodore64: more timer functionality added to VIA, memory domains added for VIA chips in 1541 drive 2012-11-16 09:23:34 +00:00
saxxonpike 5b701a58e9 commodore64: VIA timer chip registers added. Also, writes to mirrored registers now work correctly on all chips 2012-11-16 06:14:32 +00:00
saxxonpike 8196caf731 commodore64: add serial cable interface for CIA/VIA communication, also DriveLED 2012-11-15 21:40:01 +00:00
saxxonpike bd3912939a commodore64: implement serial shift register in CIA chip to prepare for disk drive I/O 2012-11-15 20:49:54 +00:00
saxxonpike 46ff936d41 commodore64: 1541 disk drive CPU emulated when a D64 or G64 is loaded, not attached to serial bus and no mechanical emulation yet 2012-11-15 15:58:26 +00:00
saxxonpike 020dedb1a0 commodore64: updated directional dataport, keyboard input now works fully- commands can be executed in BASIC 2012-11-15 08:36:06 +00:00
saxxonpike c5d6fad0e1 commodore64: CIA timer underflow interrupts implemented (BASIC now works) 2012-11-15 07:41:59 +00:00
saxxonpike 94beebdbde commodore64: SID waveform data is now in a lookup table, increases performance and startup time 2012-11-15 06:56:19 +00:00
saxxonpike b4ed1fa822 commodore64: remove DCfilter until crashes can be isolated, functional changes to SID implementation for speed 2012-11-15 03:34:28 +00:00
saxxonpike 0223225388 commodore64: rewrote SID emulation, should be a lot more accurate 2012-11-15 00:22:57 +00:00
saxxonpike 5926918f8b commodore64: implement some of the waveform calculation algorithms documented in libsidplayfp 2012-11-14 18:15:52 +00:00
saxxonpike b84ec59bb4 commodore64: replaced directional data port class with a more efficient one 2012-11-14 07:12:04 +00:00
saxxonpike a8957f1916 commodore64: D64 loading fills gap bits to meet MNIB standard track lengths 2012-11-14 04:58:39 +00:00
saxxonpike a3db998a0d commodore64: Implemented conversion of D64 into GCR bitcode (both major disk formats can be loaded now) 2012-11-14 04:48:21 +00:00
saxxonpike d29eecb4f6 commodore64: G64 disk format support 2012-11-14 01:50:17 +00:00
saxxonpike 7bd469d514 commodore64: add SyncSoundProvider for SID, placeholder for 1541 disk drive and VIA I/O chip 2012-11-13 22:40:54 +00:00
saxxonpike 98902b1a4a commodore64: fix input for some keys 2012-11-13 20:54:51 +00:00
saxxonpike b7334679c6 commodore64: envelope generator added, sound should be somewhat decent now 2012-11-13 18:59:16 +00:00
saxxonpike 30d18601ba commodore64: VIC sprite renderer fixed (shows line 21), SID noise shift register fixed (proper output frequency) 2012-11-13 16:11:31 +00:00
saxxonpike e07919476c commodore64: basic sound support, still no envelope generator so sounds will sometimes carry 2012-11-12 23:54:46 +00:00
saxxonpike 52bb5e34e5 commodore64: oscillator mixing implemented. Fixed triangle waveform. 2012-11-12 20:58:07 +00:00