Thomas Harte
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88e2b382e5
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Made an attempt at a full and thorough 6532 implementation (and got a bit more explicit about flag size in the 6502).
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2016-06-20 18:57:35 -04:00 |
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Thomas Harte
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b6dd38dad3
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Corrected type safety warning.
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2016-06-19 21:41:01 -04:00 |
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Thomas Harte
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065ec618c4
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Factored out and templated the 6532, finally taking the opportunity to add a means to control the on-console switches of an Atari 2600.
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2016-06-19 19:36:34 -04:00 |
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Thomas Harte
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65413f078c
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Factored out the 6532, eventually to make it testable.
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2016-06-19 18:57:40 -04:00 |
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Thomas Harte
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6dd8ea67c9
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Tested and trimmed delay on typing if resetting.
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2016-06-19 17:27:23 -04:00 |
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Thomas Harte
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05cb47709e
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Implemented Utility::Typer for the Electron. So that now also receives pastes.
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2016-06-19 17:25:35 -04:00 |
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Thomas Harte
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ef3ed1f436
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Implemented full paste ability for any machine that is a typer.
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2016-06-19 16:35:04 -04:00 |
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Thomas Harte
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3fc472d5cb
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Expanded typing to include phase for machines that need to go through multiple keypresses to reach a certain state, expanded Vic to be able to type most things (still bodged on lowercase though), and to schedule a 'run' if it's supposed to be loading into RAM, spotting that opportunity actually to do so.
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2016-06-19 13:46:53 -04:00 |
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Thomas Harte
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e7aeed2f03
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Established a general pattern for machines that can type things. Started working on the Vic typing itself.
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2016-06-19 13:10:52 -04:00 |
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Thomas Harte
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f4915c5ad6
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Fixed test and added basic implementation of data direction.
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2016-06-18 17:17:03 -04:00 |
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Thomas Harte
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394902f409
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Switched to clocking the 6522 by the half-cycle. Very trivial test now passes.
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2016-06-18 13:57:10 -04:00 |
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Thomas Harte
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595791cee0
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Made the base 6522 class more abstract: you must now opt-in if you want the IRQ line to be sent to a delegate.
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2016-06-18 08:51:18 -04:00 |
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Thomas Harte
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00a9f1bf24
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Fixed best-effort updater actually to run, finally moved clock rate announcement into the C++ side of things, started working on a mechanism to allow clock rate to be updated.
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2016-06-16 20:39:46 -04:00 |
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Thomas Harte
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fdc854c0c2
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Fixed tone channels; made an attempt at loading PRGs that are supposed to go into RAM.
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2016-06-13 21:49:59 -04:00 |
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Thomas Harte
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5fc36b956c
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Attempted most basic sketching of a container for Vic audio.
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2016-06-13 19:30:52 -04:00 |
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Thomas Harte
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4190b42bbb
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No need for these to live separately, I think.
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2016-06-13 18:27:18 -04:00 |
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Thomas Harte
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19b2f46488
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Fixed accesses to colour memory.
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2016-06-12 11:06:19 -04:00 |
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Thomas Harte
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4fec625b19
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Minor cleaning, implemented clearAllKeys.
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2016-06-12 10:38:21 -04:00 |
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Thomas Harte
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167ed9b8bb
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Added enough to load a PRG as a ROM.
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2016-06-11 14:00:12 -04:00 |
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Thomas Harte
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3e8d383615
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Improved key map. Possibly enough to type some basic BASIC?
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2016-06-11 13:19:59 -04:00 |
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Thomas Harte
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d1731b1d26
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Hacked my 6522 to work. Mistake is in not returning output as input when appropriate — i.e. that I'm ignoring data direction. Also fixed K and L keys.
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2016-06-11 13:06:01 -04:00 |
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Thomas Harte
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271de23ee6
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Ran on in and introduced a bunch more keys, hopefully to help to diagnose.
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2016-06-11 12:26:19 -04:00 |
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Thomas Harte
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d7c1f5b18a
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Made an attempt at hooking up the '2' and '4' keys. A mostly unsuccessful attempt. 2 does nothing, 4 clears the screen.
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2016-06-11 11:50:37 -04:00 |
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Thomas Harte
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7a241b5ef5
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Added just enough hopefully to allow implementation of the keyboard-input VIA.
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2016-06-11 11:34:39 -04:00 |
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Thomas Harte
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12d1cac751
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Merge branch 'master' into Vic-20
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2016-06-10 18:23:55 -04:00 |
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Thomas Harte
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805e2d15c6
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Fixed timing when clock is divided.
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2016-06-10 18:20:16 -04:00 |
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Thomas Harte
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1ed04fae1e
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Resolved 6560 addressing.
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2016-06-10 18:12:21 -04:00 |
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Thomas Harte
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f3b1d7de82
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... and that's a flashing cursor. Keyboard input next!
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2016-06-09 22:37:59 -04:00 |
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Thomas Harte
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30b7db3979
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Attempted a square wave, made the Vic itself responsible for address manipulation re:the 6560.
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2016-06-09 22:05:17 -04:00 |
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Thomas Harte
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e99055bedb
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Attempted switching back to a square wave for the composite video and otherwise implementing what's necessary to get to that flashing cursor — the 6560 returns its scan line and the timing bits of the 6522 are appearing.
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2016-06-08 22:15:24 -04:00 |
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Thomas Harte
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581eace478
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Increased logging slightly, ensured all of colour RAM can be read, slightly improved the 2600 pixel decoder.
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2016-06-07 22:01:14 -04:00 |
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Thomas Harte
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26ab96868a
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Decided to turn the 6522 into a template, since it's a per-cycle thing with variable behaviour. Added appropriate memory map callouts to hit the two in the Vic. Though they don't yet do anything.
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2016-06-07 19:15:18 -04:00 |
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Thomas Harte
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c7c55528e2
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Realised that registers appear also to be readable.
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2016-06-06 20:29:39 -04:00 |
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Thomas Harte
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64539a2b24
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Advanced to having some characters displayed, even though they're obviously very much incorrect and the display is still rolling.
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2016-06-06 07:35:35 -04:00 |
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Thomas Harte
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9e9e50edb1
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Added guess on how colour memory and the 12-bit bus possibly works.
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2016-06-05 16:28:06 -04:00 |
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Thomas Harte
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2ab21e7a3c
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Switched to a real (unexpanded) memory map, meaning that nonsense is no longer being supplied to the VIC.
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2016-06-05 16:00:35 -04:00 |
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Thomas Harte
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9566c87532
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Added enough to the machine that the 6560 can now produce output if it wishes.
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2016-06-05 12:11:12 -04:00 |
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Thomas Harte
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b56482607e
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Added just enough that the 6502 should now be operating correctly.
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2016-06-05 11:44:29 -04:00 |
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Thomas Harte
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0b221e773f
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Fixed ROM naming and sizes, ensured machines without sound outputs don't end up with an audio queue.
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2016-06-05 11:20:05 -04:00 |
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Thomas Harte
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f922d38ed2
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The Vic now captures the ROMs sent to it and has just enough infrastructure to get to a black screen. Progress!
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2016-06-05 10:51:07 -04:00 |
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Thomas Harte
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12243c40ad
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Kicking the ball a little further down the road, ROMs and PRGs now reach the actual emulated machine.
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2016-06-05 09:06:59 -04:00 |
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Thomas Harte
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b10a06e700
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A CRT is still absent but this moves the ball back into the C++ side's court.
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2016-06-04 22:00:50 -04:00 |
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Thomas Harte
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404873fe58
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Started sketching out infrastructure for Vic-20 support.
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2016-06-04 21:43:50 -04:00 |
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Thomas Harte
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604862b20b
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Fixed playfield/missile and playfield/ball collisions.
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2016-06-02 22:36:52 -04:00 |
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Thomas Harte
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e3b95b8d2b
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Back to asynchronous updates and drawing, to try to improve guarantees on audio latency; experimenting with whether other parts of the approach are fundamentally flawed; added a broad-phase for scheduled updates on the 2600.
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2016-06-02 21:22:55 -04:00 |
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Thomas Harte
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11073daee1
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Issues appear to be around timing generally. Working on it.
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2016-06-02 20:15:48 -04:00 |
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Thomas Harte
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7aac306a12
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Quick fix to the polynomials.
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2016-06-02 19:56:02 -04:00 |
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Thomas Harte
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253e5a4203
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With no regard to performance whatsoever, endeavoured to bring sound to the 2600. It's very scratchy, so something is wrong.
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2016-06-02 19:50:16 -04:00 |
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Thomas Harte
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1e0fcbbee8
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Made a very basic stab at a couple of the tone generators, added straight-through path for the speaker when input rate exactly equals output rate.
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2016-06-01 19:53:16 -04:00 |
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Thomas Harte
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40c4544fb7
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Got the basic sound pipeline pumping, just enough for static-level audio seemingly to work. Berzerk VE says "intruder alert, intruder alert", anyway.
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2016-06-01 19:27:04 -04:00 |
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Thomas Harte
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8dc66167be
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Made an attempt to consolidate the Objective-C++ side of things based on the incoming CRTMachine::Machine.
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2016-05-31 22:16:20 -04:00 |
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Thomas Harte
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5c4f35e13f
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Finally started on generalising the C++ stuff so as to be able to be able to get a working audio binding on the OS-specific side without further repetition by factoring an appropriate protocol out from the Electron and sketching out the correct speaker class for the Atari. Added a method to ask it what a good output frequency would be.
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2016-05-31 21:23:44 -04:00 |
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Thomas Harte
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3fc80ea01f
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Rethought, hopefully perfecting, sprite timing.
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2016-05-30 19:56:36 -04:00 |
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Thomas Harte
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8b342f77a9
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Made an attempt further to rationalise timing.
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2016-05-27 21:51:27 -04:00 |
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Thomas Harte
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91d3453cc1
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Switched to looking backwards rather than forwards.
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2016-05-27 14:33:08 -04:00 |
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Thomas Harte
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106ddae907
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Sprites are still a pixel off but better; made some attempt to move things outside of the loop.
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2016-05-25 21:43:19 -04:00 |
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Thomas Harte
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40c2c0bd2d
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Minor simplifications and improvements. Still trying to figure out what's causing the non-linear edge addressing.
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2016-05-25 21:12:25 -04:00 |
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Thomas Harte
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b01b474e36
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I'm back to thinking that resets are deferred but pixel counts are live.
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2016-05-25 07:32:25 -04:00 |
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Thomas Harte
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758806f924
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Introduced a separate queue for pixels, which may or may not be correct.
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2016-05-24 21:39:57 -04:00 |
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Thomas Harte
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0b081831a9
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Set up a pipeline for all pixels that attempts to allow for appropriate delays.
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2016-05-24 07:58:26 -04:00 |
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Thomas Harte
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5c1e594937
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Realised there's a clocking delay on starting horizontal move. Which fixes Coke Zero.
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2016-05-22 21:45:40 -04:00 |
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Thomas Harte
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c3e719c4ab
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Added missile-to-player offsetting. Completing the list of graphics-related TODOs.
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2016-05-22 17:01:56 -04:00 |
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Thomas Harte
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4c6d4d899d
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Ensured that resetting the horizontal timer affects phase.
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2016-05-22 16:29:53 -04:00 |
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Thomas Harte
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df93d7849d
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Re-enabled the ball.
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2016-05-22 14:38:14 -04:00 |
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Thomas Harte
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0242924fb4
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Various bits of caveman debugging appearing and disappearing, switched to latching ball behaviour.
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2016-05-22 14:26:02 -04:00 |
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Thomas Harte
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5e220562e4
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Actually, the four-clock delay, with palette taking effect immediately, appears to be correct. So back to the drawing board on that.
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2016-05-21 21:44:54 -04:00 |
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Thomas Harte
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4eded9b9d0
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Re-enabled collisions.
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2016-05-21 13:05:36 -04:00 |
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Thomas Harte
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b1c84f5402
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Counters run every scan line regardless of blank and sync. Also played further with timing.
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2016-05-21 12:54:39 -04:00 |
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Thomas Harte
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470c90428a
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Switched to two-register implementation of VDELP, etc.
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2016-05-21 10:26:27 -04:00 |
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Thomas Harte
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36d19cb6cf
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Made an attempt at properly pumping timers during hmove.
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2016-05-21 10:18:15 -04:00 |
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Thomas Harte
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a952813036
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Fixed missile sizes, played about with ball placement.
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2016-05-19 18:30:17 -04:00 |
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Thomas Harte
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cf5b8ab92e
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This is now approximately back to where it was on Cosmic Ark.
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2016-05-19 08:30:10 -04:00 |
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Thomas Harte
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40600b4bcb
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Made sprite placement consistent at least. Not necessarily yet correct.
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2016-05-18 22:07:24 -04:00 |
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Thomas Harte
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e61392d3fb
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Fixed incorrect duplication.
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2016-05-18 21:50:28 -04:00 |
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Thomas Harte
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8c7ce1ec3f
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Attempted to fix sprite sizing and, again, missile repetition.
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2016-05-18 21:41:25 -04:00 |
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Thomas Harte
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d013d46337
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Fixed object motion decoding and checking of the repeat mask for missile graphics.
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2016-05-18 21:36:28 -04:00 |
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Thomas Harte
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83ed6a82cf
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Fixed: asserting vertical blank doesn't affect underlying timing.
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2016-05-18 18:49:40 -04:00 |
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Thomas Harte
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877c55b5c5
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Threw in missiles. To 'complete' graphics output. Or, rather, to move me on to debugging.
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2016-05-18 07:54:44 -04:00 |
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Thomas Harte
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354143a78c
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Reintroduced an attempt to plot sprites.
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2016-05-18 07:51:25 -04:00 |
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Thomas Harte
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0b99649b0f
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Had a first shot at triggering player and missile resets.
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2016-05-18 07:31:05 -04:00 |
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Thomas Harte
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b8708b805c
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The vertical blank flag now works again.
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2016-05-17 22:02:57 -04:00 |
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Thomas Harte
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a1e63e8320
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Attempted to generalise on pixel counter storage, at least. Further adjusted background timing but I'm still not sure.
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2016-05-17 21:41:32 -04:00 |
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Thomas Harte
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ad6f405483
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Fixed: was off by one on pixels, allowing four extra pixel output cycles per line.
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2016-05-17 19:02:32 -04:00 |
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Thomas Harte
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c96674b341
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Made genuine first approximate attempt at hmove.
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2016-05-17 18:35:40 -04:00 |
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Thomas Harte
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d170bb14e6
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Extended scheduling plans, inserted initial events for hmove, albeit not yet implemented.
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2016-05-17 18:21:49 -04:00 |
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Thomas Harte
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6a961c4d28
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Added something of the ball counter, but without yet a working HMOVE it's prone to error.
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2016-05-17 07:18:14 -04:00 |
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Thomas Harte
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7d3cf76576
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Generalised slightly, to allow events to be queued up to eight cycles in advance; most importantly each event gets to pick its own delay.
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2016-05-17 07:09:18 -04:00 |
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Thomas Harte
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3d003070b3
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Made an attempt better to generalise the idea of things with 4 CLK delays.
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2016-05-16 21:54:27 -04:00 |
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Thomas Harte
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4ad074fc78
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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.
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2016-05-16 19:55:56 -04:00 |
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Thomas Harte
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f19ed2e8f8
|
Started merely attempting to reintroduce the background layer.
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2016-05-16 19:04:13 -04:00 |
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Thomas Harte
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9d92ad659f
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Established the basic timing loop, albeit without clocking delays yet.
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2016-05-16 08:01:29 -04:00 |
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Thomas Harte
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cca53598d3
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Made another run at 2600 colours.
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2016-05-14 16:52:24 -04:00 |
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Thomas Harte
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8d52765f40
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Realised why new shaders weren't taking. Very negligibly decreased Atari drawing cost.
|
2016-05-12 22:22:24 -04:00 |
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Thomas Harte
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6d65bc9b3a
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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 |
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Thomas Harte
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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 |
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Thomas Harte
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5a4262d74e
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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 |
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Thomas Harte
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1142c86811
|
Slightly simplified conditional.
|
2016-05-07 18:38:51 -04:00 |
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Thomas Harte
|
bf9917707e
|
Merge branch 'master' into Glitches
|
2016-05-05 08:31:40 -04:00 |
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Thomas Harte
|
fea32869b0
|
Implemented what I now believe to be the real paging logic.
|
2016-05-05 08:28:06 -04:00 |
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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 |
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