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4,836 Commits 8 Branches 121 Tags 496 MiB
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Commit Graph

647 Commits

Author SHA1 Message Date
Thomas Harte
499fc62187 Sets things up for implementation of the inner mode-specific logic. 2018-10-02 21:58:09 -04:00
Thomas Harte
1dd5272190 Ensures real-time output of all areas, to ensure proper palette response. 2018-10-02 21:18:28 -04:00
Thomas Harte
5361120353 Restores a stable frame. 2018-10-02 21:05:30 -04:00
Thomas Harte
60bab8fdf1 Starts to reformulate TMS collection as coroutines. 
For the time being, thereby breaks all video. A static screen of the border colour is all you'll see.
 2018-10-01 23:03:17 -04:00
Thomas Harte
91aa8f9295 Amps up colour content a little. 2018-09-30 20:47:26 -04:00
Thomas Harte
23191efc05 Starts writing and referring to colour RAM for colours. 2018-09-29 19:50:13 -04:00
Thomas Harte
0d8af010b6 Takes a stab at tile reversal and vertical scrolling. 2018-09-28 22:37:10 -04:00
Thomas Harte
7b9bb772ca Corrected to give a not-exactly-indexed-correctly approximation of what's on display. 2018-09-28 21:03:51 -04:00
Thomas Harte
f7e211c245 Makes first attempt to put something vaguely like the Master System tile map on screen. 2018-09-28 20:39:14 -04:00
Thomas Harte
35c2e74af8 Attempts to establish a coroutine-ish structure for access patterns. 
The Master System mode, inevitably, is the test case.
 2018-09-27 22:33:41 -04:00
Thomas Harte
19482a563f Attempts to explicitly make room for the SMS VDP mode. 2018-09-27 21:22:57 -04:00
Thomas Harte
9683c8f664 Advances towards the Master System actually receiving interrupts. 2018-09-23 15:58:23 -04:00
Thomas Harte
e7f4babf41 Starts taking steps towards SMS/GG and V9938/9958 support. 
Specifically: routine namespace stuff, plus the intention to move to a table-based operation+cost version of timing. Reordering works fine for the TMS, and probably would also for the SMS/GG, but it'd be problematic with the command engine of the V9938/9958 and maintaining a consistent set of code is easier.
 2018-09-17 22:59:16 -04:00
Thomas Harte
a38639d099 Eliminates the concept of an iCoordinate. 
Real-life precision appears not to support the idea of sub-sample pixel storage.
 2018-09-12 20:05:39 -04:00
Thomas Harte
31b048f966 Ensures all bools start in a valid state. 2018-09-10 22:21:03 -04:00
Thomas Harte
7b9c1bb69c Makes minor layout improvements. 2018-09-09 21:02:31 -04:00
Thomas Harte
70c4d6b9b3 Adds a one second delay between controller and drive motor off. 2018-08-03 21:13:18 -04:00
Thomas Harte
98bb5bd9f1 Ensures flux bits are observable for two cycles rather than one; it should be 1us. 2018-07-31 23:01:11 -04:00
Thomas Harte
92065813ef Ensures only the first 8px of sprites is output in 8x8 mode. 
Also adds a little extra documentation.
 2018-07-15 22:21:29 -04:00
Thomas Harte
cd464fc7de Corrects status logging. 2018-06-26 20:53:08 -04:00
Thomas Harte
df8c896193 Removes unused state and implements AND output readback. 2018-06-26 19:31:16 -04:00
Thomas Harte
59f8eeb05a Ensures the AY goes high impedance when not in read mode. 2018-06-25 20:48:24 -04:00
Thomas Harte
5ab4cfee84 Factors out repeated hex-size setting. 2018-06-21 19:27:54 -04:00
Thomas Harte
a9eb0d02c6 Returns sanity to 8272 logging. 2018-06-20 23:02:32 -04:00
Thomas Harte
adca862166 Finally makes an initial pass at logging macros. 2018-06-18 22:37:19 -04:00
Thomas Harte
dde9b73a22 Creates the through-path that will be necessary for RWTS acceleration. 2018-06-09 12:51:53 -04:00
Thomas Harte
076fa55651 Corrects: flux set is no-flux incoming. 
This restores good sleeping behaviour.
 2018-06-03 08:11:17 -04:00
Thomas Harte
1a9cea050e Minor: ensure AY registers *read* as 0 from reset, as well as being 0. 2018-06-01 19:48:42 -04:00
Thomas Harte
35e84ff1a8 Corrects NTSC quadrature phase. 2018-05-31 21:40:46 -04:00
Thomas Harte
75f9e3caeb Resolves incorrect bracketing. 2018-05-28 17:48:35 -04:00
Thomas Harte
928aab13dc Introduces more granular clocking announcements to the Disk II. 
As well as making it accept the clock rate it'll actually receive, to supply to the drives, so that they spin at the proper speed.
 2018-05-28 17:19:29 -04:00
Thomas Harte
db8d8d8404 Commutes Sleeper to ClockingHint::Source, making state more granular. 2018-05-27 23:17:06 -04:00
Thomas Harte
086b801c29 Mildly rearranges to avoid unnecessary call. 2018-05-22 21:50:07 -04:00
Thomas Harte
e482929da8 Enhances the Disk II's ability to sleep. 
Also enables Disk II sleep observation in the Oric.
 2018-05-19 23:15:28 -04:00
Thomas Harte
ed06533e60 Implements write support out of the Disk II. 2018-05-18 22:07:58 -04:00
Thomas Harte
7b7beb13a3 Eliminates the fiction of setting and getting registers. 
The Disk II seems lower level than that; it will read the data bus whenever it likes, it is the programmer's responsibility to keep up with that. It also reserves the right not to load the bus regardless of whether it receives a read or write access.
 2018-05-17 21:39:11 -04:00
Thomas Harte
c46007332a Switches to returning the shift register contents on every even read. 2018-05-17 20:18:34 -04:00
Thomas Harte
908d3b0ee5 Slightly wrong as to the details, but gets the controller trying to output. 
At an initial look, I think the shift register should end up on the data bus for all odd accesses. Need to investigate more thoroughly.
 2018-05-16 22:37:22 -04:00
Thomas Harte
8a031b1137 Eliminates 'data' register as it doesn't exist; rejigs state machine command set. 2018-05-16 22:09:59 -04:00
Thomas Harte
1aba9f807e Ensures proper upward propagation of sleeping from first start. 2018-05-16 22:07:54 -04:00
Thomas Harte
4c49963988 Switches to proper handling of the motor control and write protection. 
Per Understanding the Apple II the drive looks write protected  while phase 1 is enabled.
 2018-05-16 21:44:09 -04:00
Thomas Harte
ad9b0cd4e3 Eliminates all endashes. 2018-05-13 15:43:03 -04:00
Thomas Harte
5d6b5d9f10 Eliminates all emdashes in cross-platform code. 2018-05-13 15:34:31 -04:00
Thomas Harte
0b771ce61a Removes all instances of the copyright symbol. 2018-05-13 15:19:52 -04:00
Thomas Harte
d703328114 Adds missing #include for memcpy. 2018-05-12 17:54:13 -04:00
Thomas Harte
bc464e247f The 1540 and, by extension, the Vic-20 are now activity sources. 2018-05-11 22:24:33 -04:00
Thomas Harte
a43ca0db35 Makes the Apple II an activity source. 2018-05-10 22:17:13 -04:00
Thomas Harte
c3144382c5 Shuffles the Disk II ROM at load time into B.A.P. form. 
Only if required. In order to support various potential forms of supplied ROM.
 2018-05-09 22:03:59 -04:00
Thomas Harte
c3a2f7717b Makes attempt to implement support for the Pravetz 8D + 8DOS. 
i.e. the Disk II wired up to the Oric, with some ROM swaps.
 2018-05-08 22:05:43 -04:00
Thomas Harte
f65c65569a Makes disk head position explicitly something with sub-integral precision. 
Also as a drive-by fix, corrects accidental assumption of 10 sectors for all MFMSectorDump descendants.
 2018-05-06 23:17:36 -04:00
Thomas Harte
aacf26f05d Removed logged comment. 2018-04-30 22:03:09 -04:00
Thomas Harte
10c0e687f5 Attempts to introduce sleeping for the Disk II. 2018-04-29 17:51:10 -04:00
Thomas Harte
41075356e2 Makes a first attempt at NIB support. 2018-04-26 22:49:07 -04:00
Thomas Harte
d59db504a3 Adjusted stepper logic; some disks load now. 2018-04-25 21:59:18 -04:00
Thomas Harte
4c6dc597f4 Converts Time::get into a template, introduces a via-a-double fallback for the timed event loop. 2018-04-25 19:54:39 -04:00
Thomas Harte
7061537ff5 Makes joined-up attempt to run data through the Disk II. 2018-04-24 19:44:45 -07:00
Thomas Harte
99de8f1c5c Inverts the pulse strobe. 2018-04-24 09:03:03 -07:00
Thomas Harte
af61bbc3e2 Attempts actual performance of the state machine. 2018-04-24 08:29:05 -07:00
Thomas Harte
56d88f23ef Teeters closer and closer to trying actually to run the Disk II state machine. 2018-04-23 22:29:36 -07:00
Thomas Harte
4bff44377a Attempts to route Disk II requests to the thing itself. 2018-04-23 22:11:31 -07:00
Thomas Harte
e87a3cffd4 Merge branch 'master' into DiskII 2018-04-21 15:02:18 -07:00
Thomas Harte
5968c9a391 Corrects Apple II output audio. 2018-04-21 14:56:50 -07:00
Thomas Harte
72bc5f8d7b Adds a class to contain the Disk II and begins Apple GCR conversion routines. 2018-04-21 14:33:42 -07:00
Thomas Harte
f22c23cb4c Attempts to bring audio to the Apple II. 
By factoring the audio toggle out from the MSX.
 2018-04-17 22:28:13 -04:00
Thomas Harte
1c605d58e3 Removes the CRT requirement for an integral relationship between cycles and samples. 2018-04-16 20:00:56 -04:00
Thomas Harte
467cd5450f Adjusts PAL Vic timing. 2018-04-12 21:12:09 -04:00
Thomas Harte
428b6145fa Converts 6560 to more project normative templated form. 2018-04-11 22:00:42 -04:00
Thomas Harte
4c8a68c6a4 Implements late-0 with proper timing, and NTSC interlaced raster count timing. 2018-04-11 08:00:37 -04:00
Thomas Harte
0b4b6f4aec Tweaks luminances and reintroduces late-to-zero line counts. 2018-04-10 23:05:18 -04:00
Thomas Harte
cf6f6c5c15 Eliminates the full_frame_counter_ and slightly tweaks NTSC raster timing. 2018-04-08 18:51:20 -04:00
Thomas Harte
f541986333 Switches to more normative preincrement. 2018-04-08 18:50:42 -04:00
Thomas Harte
1c5972f7b0 Ensures NTSC raster count rollover; previously it was positing a line '261' for half of '0'. 2018-04-08 16:18:41 -04:00
Thomas Harte
3e846f89a1 Introduces different clipping zones for NTSC and PAL output. 2018-04-05 21:25:19 -04:00
Thomas Harte
60c1da6a66 Causes the 6560 to obey set_sample_volume_range. 
Thereby resolves a clipping issue.
 2018-04-05 21:04:46 -04:00
Thomas Harte
0ee40e8556 Reintroduces 90% crop for VIC output. 2018-03-31 20:57:45 -04:00
Thomas Harte
912791d3d4 Causes the s-video path correctly to function. 2018-03-30 18:24:18 -04:00
Thomas Harte
163a61dd63 Corrects SVideo-as-composite output; the Atari and Vic-20 now both supply svideo. 2018-03-30 13:16:18 -04:00
Thomas Harte
33281b9d89 Introduces S-Video as a video signal type at the interface level. 2018-03-30 10:25:41 -04:00
Thomas Harte
e1aa3e5a7f Imports chrominances from the TED documentation. They seem to apply to the VIC-I also. 2018-03-29 20:04:37 -04:00
Thomas Harte
3b26e0a7c5 Tweaks NTSC colour generation. 2018-03-26 21:22:06 -04:00
Thomas Harte
a776bec46a Tweaks PAL colours for the 6560 to be closer to screenshots found online. 2018-03-26 19:02:16 -04:00
Thomas Harte
a301964bd0 Ensures all audio queues are fully merged before machine destruction. 
Thereby avoids a race condition.
 2018-03-22 21:59:19 -04:00
Thomas Harte
48737a32a7 Introduces formal setting of the output volume to SampleSource. 
Previously every output device was making its own decision. Which is increasingly less sustainable due to the CompoundSource.
 2018-03-09 13:23:18 -05:00
Thomas Harte
705d53cc21 Picks a phase for the TMS empirically. 2018-03-03 13:53:00 -05:00
Thomas Harte
3c5a8d9ff3 Adds Super Game Module support for the ColecoVision. 2018-03-03 13:08:33 -05:00
Thomas Harte
ea13c7dd32 Implements multicolour mode on the TMS. 2018-03-02 23:08:01 -05:00
Thomas Harte
86239469e7 Allows SN76489 consumers to apply an additional divider that reduces computation. 2018-03-01 18:51:05 -05:00
Thomas Harte
7890506b16 Gives the SN76489 its proper dividers and personalities. 2018-02-28 22:36:03 -05:00
Thomas Harte
5b854d51e7 Corrects out-of-bounds access. 2018-02-27 22:45:45 -05:00
Thomas Harte
d4df101ab6 Makes a first attempt at implementing the SN76489. 2018-02-27 22:25:12 -05:00
Thomas Harte
0ad2676640 Adds a class for the SN76489 and wires it into the ColecoVision. 2018-02-26 22:04:34 -05:00
Thomas Harte
cabad6fc05 Optimises the inner TMS loops slightly. 2018-02-21 21:29:17 -05:00
Thomas Harte
2fe0ceb52a Sets TMS input gamma. 2018-01-13 22:19:41 -05:00
Thomas Harte
2f59226300 Fixes: DiskROM drive motor control, track_for_sectors' sides. 2018-01-07 20:02:40 -05:00
Thomas Harte
793ef68206 Implements unconditional force interrupt for the WD. 2018-01-07 19:42:38 -05:00
Thomas Harte
2ffde4c3c2 Corrects SCC volume errors. 
Which were leading to substantial overflow.
 2018-01-07 09:59:00 -05:00
Thomas Harte
57ddfcd645 Corrects AY counter type. 2018-01-06 23:16:01 -05:00
Thomas Harte
fc16e8eb8c Makes first attempt at actually implementing the SCC. 2018-01-06 23:15:42 -05:00
Thomas Harte
655b971976 Establishes that there is such as a thing as a Konami SCC. 
Creates one, ensures it appears in memory when intended to, lets it handle reads and writes. It currently does nothing.
 2018-01-06 20:15:55 -05:00
Thomas Harte
bcc7ad0c30 Corrects bad TMS sprite selections on the top row of the screen. 2018-01-06 16:26:11 -05:00
Thomas Harte
2dc1d4443e Separates LowpassFilter and SampleSource. 2017-12-18 21:39:23 -05:00
Thomas Harte
f8a2459c91 Corrects two lingering adaptation errors in the Vic-20. 2017-12-17 21:43:08 -05:00
Thomas Harte
ac80d10cd8 Separates the component parts of running an audio stream: task deferral, filtering and generation. 
Walking towards improving opportunities for composition.
 2017-12-17 21:26:06 -05:00
Thomas Harte
ec4c259695 Removes unused file. 2017-12-14 21:19:09 -05:00
Thomas Harte
ad50b6b1fb Corrects TMS' get_time_until_interrupt when the next interrupt is exactly a frame away. 2017-12-14 21:12:51 -05:00
Thomas Harte
3da323c657 Corrects lingering free TMS read. 2017-12-14 20:30:56 -05:00
Thomas Harte
aca7842ca4 Better documents and tidies the TMS9918. 2017-12-14 20:27:26 -05:00
Thomas Harte
c36de4f640 Attempts real VRAM access timings, correcting a frame timing error as I go. 2017-12-13 22:37:27 -05:00
Thomas Harte
5d0c33d545 Corrects occasional TMS sprite glitching. 2017-12-12 22:19:33 -05:00
Thomas Harte
b0616ee10c Adds one-before-the-graphics as a line for video collection. 
Thereby corrects sprites on line 0.
 2017-12-12 21:35:33 -05:00
Thomas Harte
798cdba979 8255: update_outputs now affects only those ports designated as outputs. 2017-12-10 17:55:37 -05:00
Thomas Harte
f957344ac4 Corrects TMS failure to show background through tile layer. 2017-12-09 23:15:04 -05:00
Thomas Harte
b3fbd0f352 Tidies up some of the TMS' magic constants. 2017-12-09 23:08:07 -05:00
Thomas Harte
042edc72f7 Adjusts TMS declared timing so as to be in-phase with an NTSC clock, and adopts an alternative palette. 2017-12-09 22:28:34 -05:00
Thomas Harte
943418c434 Reformulates TMS sprite plotting to set the collision flag and to support magnified sprites. 2017-12-09 20:30:12 -05:00
Thomas Harte
7d7e2538bd Introduces a computationally simplified inner loop for TMS graphics modes, modelled on that for text. 2017-12-09 16:02:33 -05:00
Thomas Harte
7a544731e2 Makes minor tidiness improvements to the TMS. 2017-12-08 22:20:21 -05:00
Thomas Harte
e1914b4f16 Attempts to add a proper intermediate buffer for sprites to allow the split of collection and output. 2017-12-08 22:12:39 -05:00
Thomas Harte
8653eb8b55 Corrects various latent errors in optimised TMS video collection. 2017-12-06 20:24:29 -05:00
Thomas Harte
a4f0a260fd Reformulates the TMS graphics mode fetch loop to try to eliminate heavy conditionality. Temporarily introduces some sprite selection issues. 2017-12-05 22:39:03 -05:00
Thomas Harte
d4a53e82bb Replaces manual retread of memcpy with standard memcpy. 2017-12-05 18:21:34 -05:00
Thomas Harte
6eedc99286 Makes substantial optimisations to text mode. 
Character optimisations to come.
 2017-12-04 22:18:51 -05:00
Thomas Harte
a473338abe Makes minor type conversion fixes. 2017-12-03 22:24:48 -05:00
Thomas Harte
ad3df36c20 Corrects sprite information collection to cover all four. 2017-12-03 14:51:55 -05:00
Thomas Harte
38b11893e8 Takes first steps towards sprite display on the TMS. 2017-12-02 22:13:43 -05:00
Thomas Harte
e4534775b0 Cleans up and zooms in on the TMS slightly. 2017-12-02 17:48:31 -05:00
Thomas Harte
fe0cdc8d69 Corrects colour fetching in TMS Graphics II to be a function of row. 2017-12-02 16:10:29 -05:00
Thomas Harte
ca26ce8400 Slightly corrects style errors in the Cartridge hierarchy, and introduces mapping of .ROM to the MSX when appropriate. 2017-12-02 16:01:30 -05:00
Thomas Harte
d3dd8f3f2a Implements screen 2 addressing. 2017-12-02 14:05:52 -05:00
Thomas Harte
3c8d2d579d Resolves remaining sources of text mode instability. 2017-11-30 22:48:07 -05:00
Thomas Harte
edcbb3dfed Tidies code a little and thereby uncovers and corrects one cause of output instability. 2017-11-30 22:19:53 -05:00
Thomas Harte
9c8158753e Makes a first attempt at displaying text mode. 2017-11-30 21:35:26 -05:00
Thomas Harte
ee84f33ab5 Ensures that the 9918 admits that it is the source of interrupts. 2017-11-29 21:33:43 -05:00
Thomas Harte
aa4eef41d8 Seeks to introduce MSX interrupts. 2017-11-29 20:31:55 -05:00
Thomas Harte
ecd7d4731b Advances emulation to showing what looks like appropriate text on screen. 2017-11-28 21:27:15 -05:00
Thomas Harte
563aa051e4 Simplifies code a little and gives something on screen. 2017-11-28 21:19:28 -05:00
Thomas Harte
642bb8333f Introduces something of a first attempt at graphics collection and display. An unsuccessful attempt. 2017-11-28 21:10:30 -05:00
Thomas Harte
c558e86e03 Adds border colour output. 2017-11-27 22:05:40 -05:00
Thomas Harte
dbb14ea2e2 Corrects counting deficiencies that could produce an unstable display. 2017-11-27 21:36:12 -05:00
Thomas Harte
173e16b107 Corrects the 9918 so that it terminates. 2017-11-27 19:48:04 -05:00
Thomas Harte
7d2adad67e Adds the absolute most basic version of in-frame time keeping, to display a white square. 2017-11-27 19:43:33 -05:00
Thomas Harte
d33612def5 Ensures the MSX provides a clock to the VDP. 2017-11-26 20:07:30 -05:00
Thomas Harte
9cb6ca3440 Adds elementary decoding of VDP accesses. 2017-11-26 20:01:11 -05:00
Thomas Harte
0eb5dd9688 Introduces the fundamentals of bus routing for the MSX. 2017-11-26 16:47:59 -05:00
Thomas Harte
a14b53a9ab Adds a TMS9918 skeleton plus enough in the MSX to get to a blank screen in SDL/kiosk mode. 2017-11-26 13:28:26 -05:00
Thomas Harte
c827d14d97 Corrects various GCC warnings across the 6560, CPC, TIA, Oric video and elsewhere. 2017-11-12 17:17:27 -05:00
Thomas Harte
5408efe9b5 Flags obvious default options within the 6560, Vic-20 and DynamicMachine. 2017-11-12 16:41:09 -05:00
Thomas Harte
6d80856f02 Attempts to eliminate warnings around a meaningless value and an unused label in the 8272. 2017-11-12 16:34:51 -05:00
Thomas Harte
4778616fd7 Eliminates unused result and unused label. 2017-11-12 16:30:23 -05:00
Thomas Harte
5aef81cf24 Commutes cross-platform #pragma marks to //MARK:s. 2017-11-12 15:59:11 -05:00