Thomas Harte
|
a1e63e8320
|
Attempted to generalise on pixel counter storage, at least. Further adjusted background timing but I'm still not sure.
|
2016-05-17 21:41:32 -04:00 |
|
Thomas Harte
|
ad6f405483
|
Fixed: was off by one on pixels, allowing four extra pixel output cycles per line.
|
2016-05-17 19:02:32 -04:00 |
|
Thomas Harte
|
c96674b341
|
Made genuine first approximate attempt at hmove.
|
2016-05-17 18:35:40 -04:00 |
|
Thomas Harte
|
d170bb14e6
|
Extended scheduling plans, inserted initial events for hmove, albeit not yet implemented.
|
2016-05-17 18:21:49 -04:00 |
|
Thomas Harte
|
6a961c4d28
|
Added something of the ball counter, but without yet a working HMOVE it's prone to error.
|
2016-05-17 07:18:14 -04:00 |
|
Thomas Harte
|
7d3cf76576
|
Generalised slightly, to allow events to be queued up to eight cycles in advance; most importantly each event gets to pick its own delay.
|
2016-05-17 07:09:18 -04:00 |
|
Thomas Harte
|
3d003070b3
|
Made an attempt better to generalise the idea of things with 4 CLK delays.
|
2016-05-16 21:54:27 -04:00 |
|
Thomas Harte
|
4ad074fc78
|
Introduced a four-cycle delay between playfield fetch and display, curing Yar's Revenge. Also disabled barrel roll scanling colouring again. I really need to make my mind up on that.
|
2016-05-16 19:55:56 -04:00 |
|
Thomas Harte
|
f19ed2e8f8
|
Started merely attempting to reintroduce the background layer.
|
2016-05-16 19:04:13 -04:00 |
|
Thomas Harte
|
9d92ad659f
|
Established the basic timing loop, albeit without clocking delays yet.
|
2016-05-16 08:01:29 -04:00 |
|
Thomas Harte
|
cca53598d3
|
Made another run at 2600 colours.
|
2016-05-14 16:52:24 -04:00 |
|
Thomas Harte
|
8d52765f40
|
Realised why new shaders weren't taking. Very negligibly decreased Atari drawing cost.
|
2016-05-12 22:22:24 -04:00 |
|
Thomas Harte
|
6d65bc9b3a
|
Permitted a wider error window on vertical sync, tidied things up a little and started trying to move towards full implementation of the OpenGL contract.
|
2016-05-11 22:11:01 -04:00 |
|
Thomas Harte
|
4b3c4082d2
|
These functions appear correctly to model the NTSC and PAL palettes; the CRT's attempt to switch function doesn't work properly yet though.
|
2016-05-11 21:07:18 -04:00 |
|
Thomas Harte
|
5a4262d74e
|
Confirmed: it is inaccurate for a 6502 to self reset at power up. So that responsibility now rests in the machines.
|
2016-05-10 21:05:52 -04:00 |
|
Thomas Harte
|
1142c86811
|
Slightly simplified conditional.
|
2016-05-07 18:38:51 -04:00 |
|
Thomas Harte
|
bf9917707e
|
Merge branch 'master' into Glitches
|
2016-05-05 08:31:40 -04:00 |
|
Thomas Harte
|
fea32869b0
|
Implemented what I now believe to be the real paging logic.
|
2016-05-05 08:28:06 -04:00 |
|
Thomas Harte
|
87df57195d
|
Started on an attempt not to treat the various buffers as free to loop within, starting with the input texture.
|
2016-05-04 07:39:45 -04:00 |
|
Thomas Harte
|
3af97d4069
|
Eliminated redundant variable.
|
2016-04-26 19:57:05 -04:00 |
|
Thomas Harte
|
6c567d166a
|
Fixed colour burst acceptance, switched to an integral single byte streaming of Atari colours.
|
2016-04-25 20:56:15 -04:00 |
|
Thomas Harte
|
9b64f64db7
|
Attempted to normalise some style decisions.`
|
2016-04-24 22:32:24 -04:00 |
|
Thomas Harte
|
7a8d100861
|
Found a new working formula for NTSC Atari 2600 colours.
|
2016-04-24 22:02:00 -04:00 |
|
Thomas Harte
|
d221c712b0
|
Ensured GL context is active when destructing CRTOpenGL.
|
2016-04-24 20:34:25 -04:00 |
|
Thomas Harte
|
db908a7547
|
Adjusted Atari to using its non-standard line lengths.
|
2016-04-24 19:23:30 -04:00 |
|
Thomas Harte
|
9260d97b03
|
Oh, of course, it's that the output vertex array doesn't get initialised unless there's an RGB shader program. Silly oversight. Fixed. And switched back to TV output for correct colours.
|
2016-04-24 17:56:36 -04:00 |
|
Thomas Harte
|
d0f9a6c2f5
|
Added a dump-the-input default RGB output shader. Which at least proves that the Atari 2600 is generally still working.
|
2016-04-24 17:35:25 -04:00 |
|
Thomas Harte
|
80a3169674
|
Started reviving the Atari 2600 emulation. Put new startup sequence into place.
|
2016-04-24 06:56:08 -04:00 |
|
Thomas Harte
|
ae2760e034
|
Colour phase is now updated and varies per line.
|
2016-04-21 21:07:29 -04:00 |
|
Thomas Harte
|
7aa87723a9
|
Added: key states are all cleared if the window loses focus. Which resolves sticky key issues. Allowing me just to use command+option+O for options and map both command and option as FUNC.
|
2016-04-19 21:29:10 -04:00 |
|
Thomas Harte
|
66f2c10c04
|
Resolved potential crash if tape requests are made without one inserted. Softened glFinish to glFlush, though I'm still not sure I should strictly need even that.
|
2016-04-19 21:00:48 -04:00 |
|
Thomas Harte
|
3d53f157de
|
Output selection now takes effect. So I can stop accidentally committing changes back and forth.
|
2016-04-18 08:27:58 -04:00 |
|
Thomas Harte
|
94f148e212
|
Wired in options, at least getting as far as the Objective-C bridge. Then fast loading makes it to the emulated machine, display output type doesn't.
|
2016-04-18 08:21:00 -04:00 |
|
Thomas Harte
|
499f7ace07
|
Re-enabled working video output for the Electron for the day and consolidated the rough metric I'm using to pick a number of taps for the audio filter.
|
2016-04-17 20:43:20 -04:00 |
|
Thomas Harte
|
6ff9ffba6c
|
Switching temporarily to an attempt to draw input runs as if RGB: shader compiles, fixed a race condition on out-of-bounds accesses for the source buffer.
|
2016-04-17 15:51:28 -04:00 |
|
Thomas Harte
|
104f44f27f
|
Attempted to improve deinterlacing, gave the CRT full control over blend mode, switched back to 2000000Mhz audio.
|
2016-04-14 22:20:47 -04:00 |
|
Thomas Harte
|
6a17c2992d
|
Introduced a compile-time configurable audio divider, set it arbitrarily to '8' for now. Discovered why my graphics aren't centred and added a TODO.
|
2016-04-13 22:31:59 -04:00 |
|
Thomas Harte
|
026ce0255f
|
Source runs are now captured, and that buffer appropriately reset.
|
2016-04-13 22:20:13 -04:00 |
|
Thomas Harte
|
2ea02ed127
|
A source array buffer is also now created, mapped, unmapped, etc.
|
2016-04-13 22:14:18 -04:00 |
|
Thomas Harte
|
955e185790
|
Minor simplification.
|
2016-04-13 19:19:04 -04:00 |
|
Thomas Harte
|
4d889d9c7f
|
Made an attempt slightly to simplify the fragment processor, at both ends.
|
2016-04-12 22:35:11 -04:00 |
|
Thomas Harte
|
2cc72169ff
|
Ensured machines can nominate their own aspect ratio windows. Switched to 11/10 for the Electron.
|
2016-04-11 23:12:56 -04:00 |
|
Thomas Harte
|
7276a06cc0
|
Added a helper to calculate a visible rect based on output timings, used it to scale the Electron output up to the full window size.
|
2016-04-11 21:47:23 -04:00 |
|
Thomas Harte
|
a3c2cd880e
|
I discovered a further post on this on the STH forums; apparently the Electron simply asserts sync continuously. No breaks.
|
2016-04-11 21:01:09 -04:00 |
|
Thomas Harte
|
bdb99ba92f
|
Corrections back towards composite output: fixed misnamed constant, ensured the CRT doesn't write nonsense to the output buffer, ensured it grows three vertices at a time rather than six when desired. Net effect should be that the output stage is working again, with the input processing remaining to fill in.
|
2016-04-10 22:56:52 -04:00 |
|
Thomas Harte
|
8701366277
|
Switched horizontal sync detection back to differential, switched the Electron to an XOR-style sync output (believed to be accurate, but I need to check), fixed some latent issues around vertical sync detection.
|
2016-04-10 21:34:40 -04:00 |
|
Thomas Harte
|
e617bd2bb3
|
Turned audio quality up to the maximum, at least for now.
|
2016-04-06 21:12:22 -04:00 |
|
Thomas Harte
|
5aa6da221f
|
Shifted responsibility for byte shifts, probably to a more logical place.
|
2016-04-05 22:19:14 -04:00 |
|
Thomas Harte
|
2248769df9
|
Pulled a bunch of selection parts outside of the loops. Probably exhausting this angle of attack.
|
2016-04-05 22:17:44 -04:00 |
|
Thomas Harte
|
8f87973a96
|
Switched to table-based byte to output conversion.
|
2016-04-05 22:07:10 -04:00 |
|
Thomas Harte
|
e35456612a
|
Simplified 40-column to pixel conversion.
|
2016-04-05 20:44:05 -04:00 |
|
Thomas Harte
|
6dbd20ffde
|
Expanded interface to rgb_sample to eliminate its need to make assumptions about globals, used expanded interface to compact Electron data to two pixels per byte.
|
2016-04-05 20:32:55 -04:00 |
|
Thomas Harte
|
7838507a7a
|
Simplified sound generation.
|
2016-04-04 22:22:19 -04:00 |
|
Thomas Harte
|
729fddea1c
|
Switched to integer textures, likely to simplify for most use cases.
|
2016-04-04 19:39:01 -04:00 |
|
Thomas Harte
|
3ca58b2a57
|
Attemted further to diminish jumpiness.
|
2016-03-22 22:07:30 -04:00 |
|
Thomas Harte
|
8cd5d40e00
|
Made an attempt to reduce the amount of data heading to the GPU.
|
2016-03-22 21:16:32 -04:00 |
|
Thomas Harte
|
902017a962
|
Fixes: drop any processing backlog, try not to allow an Electron document to close mid-draw, perform a frame grab even if the emulated machine is over-processing, really really don't create a CRT until it's safe.
|
2016-03-20 18:42:37 -04:00 |
|
Thomas Harte
|
fb6fb5d948
|
Switched to two-phase setup to deal with OpenGL scheduling.
|
2016-03-20 13:50:13 -04:00 |
|
Thomas Harte
|
aa8a192c7e
|
Simplified API down to their being a single texture with a specified depth.
|
2016-03-19 17:37:55 -04:00 |
|
Thomas Harte
|
b074860031
|
Updated to latest information on interrupt timing.
|
2016-03-18 21:11:25 -04:00 |
|
Thomas Harte
|
4cd0aa3416
|
Completed FIR filter based audio output.
|
2016-03-15 23:37:35 -04:00 |
|
Thomas Harte
|
0edf165401
|
Fixed sound pitch, though I'm not yet exactly sure why.
|
2016-03-14 22:52:16 -04:00 |
|
Thomas Harte
|
9a492ac15f
|
Made a further guess at the state interrupts would probably be left; slightly simplified interface.
|
2016-03-14 22:42:52 -04:00 |
|
Thomas Harte
|
15120d8fb6
|
Switched to probably more accurate contended memory, resolved issue of not leaving the tape data received interrupt set when returning a byte from the fast tape, fixing Joe Blade, and tested slightly further to determine that interrupts probably signal upon entry into horizontal sync.
|
2016-03-14 19:29:28 -04:00 |
|
Thomas Harte
|
fb26b38ff9
|
This is as simplified as things seem to be able to get without breaking at least Northern Star. Joe Blade et al remain stubbornly broken but I'm not immediately able to determine why.
|
2016-03-13 19:55:20 -04:00 |
|
Thomas Harte
|
f797e6b5b6
|
Started taking baby steps towards a genuine unification of the tape interrupt generating code.
|
2016-03-13 19:45:50 -04:00 |
|
Thomas Harte
|
bc554dedf7
|
Fixed: attempting to read the screen start address no longer alters it.
|
2016-03-13 18:50:23 -04:00 |
|
Thomas Harte
|
1c4acfb599
|
I think this is a prima facie acceptable implementation of the fast tape hack.
|
2016-03-13 17:39:53 -04:00 |
|
Thomas Harte
|
4462bb92f8
|
Moved interrupt back down to where it's probably meant to be.
|
2016-03-12 23:18:46 -05:00 |
|
Thomas Harte
|
cdff90f20d
|
Fixed: setting an interrupt control value with the lowest bit set could result in interrupts that can't be disabled.
|
2016-03-12 22:55:33 -05:00 |
|
Thomas Harte
|
6327311130
|
Made an attempt to separate and clarify on tape interrupts.
|
2016-03-12 20:32:26 -05:00 |
|
Thomas Harte
|
cfa616d593
|
Fixed: timing issue versus supplied test ROM was failure to include the Plus 1 ROM in the mix.
|
2016-03-12 11:51:20 -05:00 |
|
Thomas Harte
|
763d5e8819
|
Access timing now appears to be exactly on the nail. Disabled automatic interrupt expiration again as I'm not persuaded it's correct for at least the RTC.
|
2016-03-10 23:12:28 -05:00 |
|
Thomas Harte
|
e305fd9326
|
Adjusted numbers, empirically.
|
2016-03-10 22:40:18 -05:00 |
|
Thomas Harte
|
a89225987f
|
Blank lines are back.
|
2016-03-10 22:19:54 -05:00 |
|
Thomas Harte
|
b836d74e18
|
Believing the previous implementation to be overly complicated through premature optimisation, simplified video. It's slightly slower now. Will need work. Immediately to do: figure out how to deal with blank scan lines.
|
2016-03-10 22:08:50 -05:00 |
|
Thomas Harte
|
20ac630e4d
|
Some minor optimisations and timing tweaks. Nothing of substance.
|
2016-03-10 19:58:50 -05:00 |
|
Thomas Harte
|
df3fff51c7
|
These interrupts apparently last only 64µs at most.
|
2016-03-10 19:10:53 -05:00 |
|
Thomas Harte
|
f232a12fad
|
Fixed RAM timings: it's at least two and possibly three cycles to access RAM, and an access that overlaps with video fetch in Modes 0–3 will cost the length of the video fetch rather than somehow finishing in time.
|
2016-03-10 19:04:43 -05:00 |
|
Thomas Harte
|
c7976dd657
|
Started trying to clean up my Outputs namespace by moving stuff related to the CRT underneath a separate subnamespace.
|
2016-03-08 20:49:07 -05:00 |
|
Thomas Harte
|
6dfe877c43
|
Basic attempts to organise myself into shape for composite output continue.
|
2016-03-07 21:22:47 -05:00 |
|
Thomas Harte
|
1e5fe2b2c1
|
Made an attempt to reestablish the Atari 2600 output connection despite various changes (TODO: generalise that stuff), and to start creating the composite shader.
|
2016-03-07 21:04:04 -05:00 |
|
Thomas Harte
|
cd9c62acca
|
Still stepping slowly towards a working composite mode, switched the RGB sampling function to returning a vec4, which may be of benefit to any machine with a brightness part of an RGB signal, and started edging towards at least having the correct GLSL programs ready for converting composite output.
|
2016-03-07 19:08:26 -05:00 |
|
Thomas Harte
|
3b6c9c15a1
|
Switching momentarily back to monitor mode, resolved why I was suddenly getting no output upon creating some texture targets.
|
2016-03-07 18:55:15 -05:00 |
|
Thomas Harte
|
eefd17ed4c
|
Fixed sync response in composite scan output generation and stored texture coordinates.
|
2016-03-05 21:52:22 -05:00 |
|
Thomas Harte
|
5c8db71c64
|
Corrected some constants, ensured both machines (so far) are setting the output device.
|
2016-03-05 16:19:10 -05:00 |
|
Thomas Harte
|
7839d93344
|
With the provision of an extra hint to the CRT and, finally, the realisation about why my scans weren't exactly joining up, improved output precision.
|
2016-02-27 22:39:01 -05:00 |
|
Thomas Harte
|
1c6de7692d
|
Made an attempt to fix tape output interrupts; offloaded raster width and placing conversion to the GPU.
|
2016-02-27 20:37:41 -05:00 |
|
Thomas Harte
|
db18c85423
|
Simplified the run builder rather; put a double check of Electron timing in place.
|
2016-02-25 22:01:42 -05:00 |
|
Thomas Harte
|
1eea28b692
|
Disabled some debugging parts, added some others, marked some things as inline. Ticking over.
|
2016-02-22 23:35:42 -05:00 |
|
Thomas Harte
|
ec3cccbb0d
|
Working towards HQ UEF support: fixed bug whereby writing to tape output would reset input pulse stepper; added support for chunk 0116 and approximate support for 0113.
|
2016-02-20 22:03:14 -05:00 |
|
Thomas Harte
|
3754cf4bce
|
Played about with interrupt timing.
|
2016-02-20 21:24:02 -05:00 |
|
Thomas Harte
|
574985f9a2
|
Fixed interlaced timing; switched to a more robust detector for horizontal sync; eliminated some test logging.
|
2016-02-20 20:29:40 -05:00 |
|
Thomas Harte
|
00f414d757
|
Made an attempt to reintroduce interlacing and screen modes with gaps. Something's wrong with synchronisation though, so most likely I'm outputting a bad signal.
|
2016-02-20 17:32:51 -05:00 |
|
Thomas Harte
|
da361be3ee
|
This might be more accurate? Probably not. Who knows?
|
2016-02-20 00:13:43 -05:00 |
|
Thomas Harte
|
518c134348
|
Blank lines are missing (if the double negative can be forgiven) but the framebuffer is otherwise seemingly working well again.
|
2016-02-20 00:11:23 -05:00 |
|
Thomas Harte
|
a3432120f3
|
Fixed synchronisation — my two fields weren't of equal length, I wasn't breaking calls to the CRT upon 40/80 transitions, I had the wrong maximum run length. Now I just need to put real pixels back in.
|
2016-02-19 23:57:57 -05:00 |
|
Thomas Harte
|
1954f7bcbd
|
Got back to a stable image, at least when staying in a mode. Which is what I was trying to fix. Hmmm.
|
2016-02-19 23:41:09 -05:00 |
|
Thomas Harte
|
dce1649fc5
|
Commuted some camelCase variables into more standard C++ underscore names; decided the best fix for the graphics output is to break it down into much simpler chunks. output_pixels is currently a placeholder that simply outputs blank so the current effect is that all data is missing but it should be easy enough now to put pixels back in.
|
2016-02-18 23:23:49 -05:00 |
|
Thomas Harte
|
0b5417ab44
|
Made an attempt to put interrupts in the correct places regardless of even/odd field.
|
2016-02-16 20:36:19 -05:00 |
|