Thomas Harte
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aebf636528
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Ensured the PIA timer resumes its normal tick rate after being read; fixed those spaces that had crept in where tabs should be.
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2015-08-10 16:55:16 +01:00 |
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Thomas Harte
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42677f5f83
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Fixed association of motion registers and actual registers.
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2015-08-10 16:43:45 +01:00 |
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Thomas Harte
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2dde2efff0
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Attempted to standardise object counters.
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2015-08-10 15:09:40 +01:00 |
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Thomas Harte
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a4e52cc4db
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Made an attempt to switch to a hardware-accurate object timer model. Without yet perfect success.
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2015-08-10 00:20:18 +01:00 |
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Thomas Harte
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cd67e31e64
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Made a first attempt at switching a little closer to TIA's real internal counter setup.
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2015-08-09 22:47:11 +01:00 |
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Thomas Harte
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9c91f1a2eb
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Added an attempt at NTSC/PAL autodetection, based on number of missed vertical syncs.
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2015-07-31 18:04:33 -04:00 |
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Thomas Harte
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39bfbf1000
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Attempted ball graphics enable delay.
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2015-07-30 23:01:28 -04:00 |
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Thomas Harte
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1b7846f09b
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Made a first attempt at the sprite latches. Hopefully this should make a few more Activision logos, etc, show up correctly.
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2015-07-30 20:52:26 -04:00 |
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Thomas Harte
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98efae2536
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Reintroduced emergency vertical sync — so that output occurs even when the emulation isn't catching syncs properly — and switched some spaces to tabs.
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2015-07-30 17:16:49 -04:00 |
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Thomas Harte
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14adcd2096
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Had a quick bash at timer overflow.
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2015-07-30 16:09:32 -04:00 |
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Thomas Harte
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f653b5dff3
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Made a first tentative attempt at supporting all eight sprite modes.
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2015-07-30 11:52:28 -04:00 |
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Thomas Harte
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d1ae2caf91
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Did the absolute minimum necessary to get some sprites showing in some capacity.
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2015-07-29 23:48:52 -04:00 |
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Thomas Harte
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23df94d011
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Got at least as far as putting a single dot at the player 0 and player 1 positions. Which may or may not be accurate.
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2015-07-29 22:37:37 -04:00 |
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Thomas Harte
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164866d613
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Collapsed two methods into one, to avoid redundant pixel copying.
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2015-07-27 22:12:13 -04:00 |
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Thomas Harte
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3c25ead1f3
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Started working out some of my retain cycles and general failures to release. Switched .mm filename so that Xcode will stop getting confused when I try to switch between implementation and interface files.
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2015-07-27 21:15:10 -04:00 |
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Thomas Harte
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01109d441b
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Made an attempt at NTSC colours. Hard coded in RGB, not composite. Short cuts, tsk.
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2015-07-27 19:04:03 -04:00 |
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Thomas Harte
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cd0a62d21e
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With a slight tweak to the informal protocol used for 6502 memory access cycles, ensured the wait strobe actually halts the CPU, to give a more accurate linking of machine time to real time.
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2015-07-26 15:55:19 -04:00 |
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Thomas Harte
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8efd449834
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Switched to a down counter and a reset test that remains unconditional but doesn't depend on % (which seems to turn into a big imul-powered deal). Probably pointless mulling around the edges at this point.
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2015-07-26 15:45:19 -04:00 |
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Thomas Harte
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6252f6030f
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Switched to idiomatic source name, ensured latest project name is in all appropriate header places, threw texture coordinates slightly into the shader mix.
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2015-07-26 15:25:11 -04:00 |
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Thomas Harte
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963cb2f6fb
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Attempted to switch to slightly more meaningful names within the CRT and implemented a delegate to investigate output. Working on it.
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2015-07-22 18:15:18 -04:00 |
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Thomas Harte
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4a1e9fe2a8
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Rephrased the CRT as owning an arbitrary number of buffers and vending storage space for pixel output. That much better maps to potential implementations of this thing in GLSL, with ES 2.0's limitations kept in mind.
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2015-07-19 21:21:34 -04:00 |
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Thomas Harte
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6f78ecdc9c
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Made first genuine attempt at outputting a meaningful CRT stream. Which shows some significant errors. So work to do.
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2015-07-19 16:48:14 -04:00 |
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Thomas Harte
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2d0f861474
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Incoming: a 'CRT' class, to receive information intended for a cathode ray tube. To decode sync, etc.
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2015-07-19 13:36:27 -04:00 |
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Thomas Harte
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3e0679235a
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This now goes just far enough to create an instance of Atari2600::Machine and push a ROM to it. Next jobs are to get a basic CRT emulation wired up, outputting to the window.
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2015-07-16 20:40:46 -04:00 |
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Thomas Harte
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6558ae1425
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Imported what little I have so far in the way of a memory-access cycle complete 6502 and just enough of a pretend Atari 2600 on top to be able to see some playfields in ASCII art.
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2015-07-16 19:56:02 -04:00 |
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