Thomas Harte
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f797e6b5b6
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Started taking baby steps towards a genuine unification of the tape interrupt generating code.
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2016-03-13 19:45:50 -04:00 |
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Thomas Harte
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bc554dedf7
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Fixed: attempting to read the screen start address no longer alters it.
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2016-03-13 18:50:23 -04:00 |
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Thomas Harte
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1c4acfb599
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I think this is a prima facie acceptable implementation of the fast tape hack.
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2016-03-13 17:39:53 -04:00 |
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Thomas Harte
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bb0cd89574
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Got explicit about threading guarantees.
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2016-03-13 13:38:03 -04:00 |
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Thomas Harte
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67dffc89e0
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Stripped unnecessary includes.
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2016-03-13 13:25:34 -04:00 |
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Thomas Harte
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21ca1ef86b
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Started attempting to clarify instance variable usage.
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2016-03-12 23:19:10 -05:00 |
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Thomas Harte
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4462bb92f8
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Moved interrupt back down to where it's probably meant to be.
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2016-03-12 23:18:46 -05:00 |
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Thomas Harte
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cdff90f20d
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Fixed: setting an interrupt control value with the lowest bit set could result in interrupts that can't be disabled.
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2016-03-12 22:55:33 -05:00 |
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Thomas Harte
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6327311130
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Made an attempt to separate and clarify on tape interrupts.
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2016-03-12 20:32:26 -05:00 |
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Thomas Harte
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cfa616d593
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Fixed: timing issue versus supplied test ROM was failure to include the Plus 1 ROM in the mix.
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2016-03-12 11:51:20 -05:00 |
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Thomas Harte
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763d5e8819
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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.
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2016-03-10 23:12:28 -05:00 |
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Thomas Harte
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e305fd9326
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Adjusted numbers, empirically.
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2016-03-10 22:40:18 -05:00 |
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Thomas Harte
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a89225987f
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Blank lines are back.
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2016-03-10 22:19:54 -05:00 |
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Thomas Harte
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b836d74e18
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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.
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2016-03-10 22:08:50 -05:00 |
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Thomas Harte
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20ac630e4d
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Some minor optimisations and timing tweaks. Nothing of substance.
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2016-03-10 19:58:50 -05:00 |
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Thomas Harte
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df3fff51c7
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These interrupts apparently last only 64µs at most.
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2016-03-10 19:10:53 -05:00 |
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Thomas Harte
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f232a12fad
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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.
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2016-03-10 19:04:43 -05:00 |
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Thomas Harte
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7255408313
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Experimented with going back to horizontal sync on leading edge; not sure so (temporarily?) disabled.
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2016-03-08 22:54:05 -05:00 |
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Thomas Harte
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68da673a95
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Wrapped this up as explicitly only the Mac thing to do.
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2016-03-08 22:53:29 -05:00 |
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Thomas Harte
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bf5747f83e
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Made an attempt to chop out all the stuff of building up the OpenGL data from the stuff of parsing input.
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2016-03-08 22:40:23 -05:00 |
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Thomas Harte
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14b2927275
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Made further attempts to tidy up; trying to demarcate between public interface and private.
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2016-03-08 20:59:16 -05:00 |
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Thomas Harte
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c7976dd657
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Started trying to clean up my Outputs namespace by moving stuff related to the CRT underneath a separate subnamespace.
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2016-03-08 20:49:07 -05:00 |
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Thomas Harte
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bb09a5f58c
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The attribute locations don't really need to be stored. They can be transient.
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2016-03-07 21:42:21 -05:00 |
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Thomas Harte
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6dfe877c43
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Basic attempts to organise myself into shape for composite output continue.
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2016-03-07 21:22:47 -05:00 |
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Thomas Harte
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1e5fe2b2c1
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Made an attempt to reestablish the Atari 2600 output connection despite various changes (TODO: generalise that stuff), and to start creating the composite shader.
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2016-03-07 21:04:04 -05:00 |
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Thomas Harte
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2de229152f
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Started sketching out shaders to do the first part of the composite conversion.
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2016-03-07 19:21:04 -05:00 |
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Thomas Harte
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cd9c62acca
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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.
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2016-03-07 19:08:26 -05:00 |
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Thomas Harte
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3b6c9c15a1
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Switching momentarily back to monitor mode, resolved why I was suddenly getting no output upon creating some texture targets.
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2016-03-07 18:55:15 -05:00 |
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Thomas Harte
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eefd17ed4c
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Fixed sync response in composite scan output generation and stored texture coordinates.
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2016-03-05 21:52:22 -05:00 |
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Thomas Harte
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6cddb4c9c8
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Added a first attempt to generate output scans for composite mode. So this in theory completes the CPU side of composite operations. Though I'm sure problems will reveal themselves.
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2016-03-05 21:18:28 -05:00 |
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Thomas Harte
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3f39803d32
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Switched to triangle strips, to eliminate the need for any temporary storage for the composite output path.
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2016-03-05 20:47:11 -05:00 |
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Thomas Harte
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23c223e2ed
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Started edging towards completing the CPU side of accumulating enough data for composite decoding.
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2016-03-05 17:55:18 -05:00 |
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Thomas Harte
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5c8db71c64
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Corrected some constants, ensured both machines (so far) are setting the output device.
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2016-03-05 16:19:10 -05:00 |
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Thomas Harte
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41c09f8c3f
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Renamed CSCathodeRayView to CSOpenGLView as it no longer has any CRT-related responsibilities. It just does the GL and manages a serial dispatch queue.
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2016-03-05 14:45:09 -05:00 |
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Thomas Harte
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70b6d51451
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Ever more baby steps back towards composite decoding.
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2016-03-05 14:36:12 -05:00 |
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Thomas Harte
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95efeb1d56
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Ensured all delegate and responder delegate messages occur on the same queue.
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2016-03-05 14:35:47 -05:00 |
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Thomas Harte
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c754a6e45a
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Decoupled execution speed and frame rate; cleaned up.
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2016-03-03 22:12:31 -05:00 |
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Thomas Harte
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2f7626a5e0
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Okay, this definitely definitely is supposed to be this way around.
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2016-02-28 22:00:05 -05:00 |
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Thomas Harte
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3449120c24
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Added a note to future self, put the scan edge generator back to the way round it was before.
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2016-02-27 22:51:37 -05:00 |
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Thomas Harte
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60d35fa72b
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Requested multisampling, if available, rather than supersampling.
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2016-02-27 22:46:31 -05:00 |
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Thomas Harte
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7839d93344
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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.
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2016-02-27 22:39:01 -05:00 |
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Thomas Harte
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1c6de7692d
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Made an attempt to fix tape output interrupts; offloaded raster width and placing conversion to the GPU.
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2016-02-27 20:37:41 -05:00 |
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Thomas Harte
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db18c85423
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Simplified the run builder rather; put a double check of Electron timing in place.
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2016-02-25 22:01:42 -05:00 |
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Thomas Harte
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1eea28b692
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Disabled some debugging parts, added some others, marked some things as inline. Ticking over.
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2016-02-22 23:35:42 -05:00 |
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Thomas Harte
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4b28e7b974
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Switched back to a single array and vertex buffer.
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2016-02-21 22:54:55 -05:00 |
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Thomas Harte
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2b8fb5b615
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Made an attempt to fix my 0114 implementation.
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2016-02-20 23:13:58 -05:00 |
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Thomas Harte
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f7fc7cb932
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Implemented some portion of 0114; ensured I'm safely skipping chunks in all cases.
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2016-02-20 22:18:00 -05:00 |
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Thomas Harte
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ec3cccbb0d
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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.
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2016-02-20 22:03:14 -05:00 |
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Thomas Harte
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3754cf4bce
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Played about with interrupt timing.
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2016-02-20 21:24:02 -05:00 |
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Thomas Harte
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574985f9a2
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Fixed interlaced timing; switched to a more robust detector for horizontal sync; eliminated some test logging.
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2016-02-20 20:29:40 -05:00 |
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