Thomas Harte
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8827597363
|
Messier and messier, but I've at least attempted to implement hardware attention acknowledge.
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2016-07-08 19:00:39 -04:00 |
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Thomas Harte
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9a08ef61cb
|
Still fumbling in the margins: made an effort not to imply that the 1540 is forever reading syncs.
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2016-07-07 22:13:18 -04:00 |
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Thomas Harte
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199c0e27e0
|
Mostly just random guesses now, to be honest. It's approaching the end of my window for the morning.
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2016-07-07 07:16:36 -04:00 |
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Thomas Harte
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81e6cc34e5
|
Per the ROM disassembly, the Vic's VIA outputs are inverted for the benefit of the serial bus.
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2016-07-07 06:57:21 -04:00 |
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Thomas Harte
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c9479f923b
|
The inversion of truth was clearly just a problematic API. Got explicit. LineLevel might need to become more pervasive.
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2016-07-07 06:44:13 -04:00 |
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Thomas Harte
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dcb86a027a
|
Okay, so the 1540 doesn't toggle the actual attention line. I don't know what it does yet but this helps.
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2016-07-06 22:31:14 -04:00 |
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Thomas Harte
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1baf21827c
|
Since the ROM is well disassembled, let's actually try to be a 1541 first.
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2016-07-06 22:17:32 -04:00 |
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Thomas Harte
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4f174786b5
|
Fixed potential buffer overrun.
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2016-07-06 21:39:09 -04:00 |
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Thomas Harte
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f64cd8cfcb
|
Quick fixes properly to declare the DriveVIA, to ensure its interrupts take effect, and to wire ATN IN to CA1 rather than CB2.
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2016-07-06 20:22:46 -04:00 |
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Thomas Harte
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428fcdb978
|
Centralised and improved serial logging.
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2016-07-06 07:46:21 -04:00 |
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Thomas Harte
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8819711bc8
|
Threw in the second VIA as a currently clearly incorrect thing.
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2016-07-05 22:22:09 -04:00 |
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Thomas Harte
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93c2bb80a2
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Improved a comment, added independent C[A/B]2 input mode.
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2016-07-05 21:11:51 -04:00 |
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Thomas Harte
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6c4fa4ec5d
|
Improved commenting and initial state communication.
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2016-07-05 20:57:31 -04:00 |
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Thomas Harte
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1e6d90de17
|
Made an attempt properly to deal with initial bus state.
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2016-07-05 20:52:33 -04:00 |
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Thomas Harte
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c3b7d24293
|
It appears that the attention line is also wired to CB2. So the ball is back in the 6522's court.
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2016-07-05 19:19:46 -04:00 |
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Thomas Harte
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11fc43aa04
|
Made an attempt to allow the 1540 to talk back to the Vic, and to receive interrupts. Also slightly disambiguated debugging logging.
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2016-07-05 19:12:43 -04:00 |
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Thomas Harte
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d16b79073e
|
Further fleshing out: added a serial port for the serial bus.
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2016-07-05 17:27:02 -04:00 |
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Thomas Harte
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d1eea6943d
|
Ensured the 1540 ROM gets installed, at least.
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2016-07-05 16:54:25 -04:00 |
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Thomas Harte
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86dabd007b
|
Furthered fleshing out of the 1540. Though it doesn't yet receive a ROM so won't even attempt to do anything meaningful.
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2016-07-05 16:39:18 -04:00 |
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Thomas Harte
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a25fcc7190
|
Made a first attempt at wiring back serial port input.
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2016-07-05 16:10:54 -04:00 |
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Thomas Harte
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d2cded7b59
|
Attempted to separate out the concept of a serial port and a serial bus, since the bus may be shared, and to establish half duplex communications from the Vic.
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2016-07-05 14:55:20 -04:00 |
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Thomas Harte
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0d3d0fbe4d
|
Created a namespace for Commodore and an empty container file for the 1540[/1] implementation.
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2016-07-05 13:28:27 -04:00 |
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Thomas Harte
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97751a9d86
|
Took the preliminary steps necessary to wire up a serial port.
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2016-07-05 10:55:47 -04:00 |
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Thomas Harte
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a49f2b41cc
|
Added C++ side of things. I think.
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2016-07-04 21:48:25 -04:00 |
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Thomas Harte
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8db44eed3e
|
Added a default implementation of Speaker::skip_samples.
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2016-07-04 20:48:27 -04:00 |
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Thomas Harte
|
bfa237397d
|
Settled on assigning to nullptr as the appropriate style for emptying shared_ptrs; fixed the Vic properly to release its output resources.
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2016-07-04 20:34:11 -04:00 |
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Thomas Harte
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88964ceac0
|
Eliminated plain pointer passing for object types.
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2016-07-04 19:33:55 -04:00 |
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Thomas Harte
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82b0bc9b58
|
Discovered that this is another meaningful usage of using.
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2016-07-04 19:10:10 -04:00 |
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Thomas Harte
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7e5b631e30
|
Cut some dead code.
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2016-07-01 19:02:29 -04:00 |
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Thomas Harte
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7fa010a463
|
Attempted to add support for the most basic of control line output, and slightly to optimise the Vic.
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2016-07-01 19:01:22 -04:00 |
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Thomas Harte
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ed8f4d0476
|
Added some minor additional bits of documentation.
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2016-06-30 08:46:29 -04:00 |
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Thomas Harte
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0182b0483a
|
Added a 'power on' flag that is set automatically at construction but can be declined. Saves all that stuff of every machine having to set and then unset the RST line, and fixes an Electron bug related to that.
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2016-06-29 19:13:24 -04:00 |
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Thomas Harte
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6027cba95f
|
Factored out the stuff of pushing a fast-loading option onwards and storing it within the user defaults.
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2016-06-27 21:38:14 -04:00 |
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Thomas Harte
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e3e6bbb785
|
Removed the colon again, until I can educate myself a little further.
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2016-06-26 21:38:03 -04:00 |
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Thomas Harte
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69d78dfdb3
|
Removed logging.
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2016-06-26 21:36:26 -04:00 |
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Thomas Harte
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1439ca0580
|
Added a quick automatic issuing of the 'LOAD' command.
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2016-06-26 21:34:37 -04:00 |
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Thomas Harte
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843d1fdca7
|
Added some extra logging while trying to determine what's going on; added interrupt clearing for the control lines.
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2016-06-26 21:30:06 -04:00 |
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Thomas Harte
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2a2c3da5d4
|
Added hardwired tape present bit.
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2016-06-26 19:50:49 -04:00 |
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Thomas Harte
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c306d705e1
|
Made a quick first attempt at all-the-way-through tape wiring for the Vic.
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2016-06-26 19:43:09 -04:00 |
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Thomas Harte
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37ba42a52f
|
Factored out the stuff of playing a tape, started basic sketch of the Vic-related classes.
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2016-06-26 19:03:57 -04:00 |
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Thomas Harte
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d5e50f5ea0
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Got a bit more explicit about how ports are identified on the 6522.
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2016-06-26 12:30:01 -04:00 |
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Thomas Harte
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8d9eb30d82
|
So it sounds like the user-port VIA might actually be connected to NMI?
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2016-06-25 16:31:35 -04:00 |
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Thomas Harte
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8741be5c84
|
Made the slightest possible effort to get TAPs opened and passed to the VIC.
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2016-06-25 16:24:52 -04:00 |
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Thomas Harte
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2bd71e7e9b
|
.reset is the more normal way to reassign a unique_ptr.
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2016-06-23 20:52:44 -04:00 |
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Thomas Harte
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e05003c176
|
Discovered that the VIC and the VIAs can be simultaneously selected. Adjusted bus appropriately.
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2016-06-22 17:34:42 -04:00 |
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Thomas Harte
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454e98302d
|
Slight rearrangement plus a setting of the CSMachine delegate corrects audio after a clock rate change.
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2016-06-20 22:18:41 -04:00 |
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Thomas Harte
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31b26b8118
|
Made a first attempt to implement the full top-to-bottom change of clock rates, giving the Atari the ability to change rate when it switches to PAL mode, as it should always have been.
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2016-06-20 21:47:27 -04:00 |
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Thomas Harte
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88e2b382e5
|
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
|
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
|
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
|
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
|
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
|
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
|
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
|
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
|
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
|
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
|
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
|
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
|
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
|
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
|
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
|
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
|
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
|
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
|
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
|
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
|
Made an attempt at hooking up the '2' and '4' keys. A mostly unsuccessful attempt. 2 does nothing, 4 clears the screen.
|
2016-06-11 11:50:37 -04:00 |
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Thomas Harte
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7a241b5ef5
|
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
|
Merge branch 'master' into Vic-20
|
2016-06-10 18:23:55 -04:00 |
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Thomas Harte
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805e2d15c6
|
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
|
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
|
... and that's a flashing cursor. Keyboard input next!
|
2016-06-09 22:37:59 -04:00 |
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Thomas Harte
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30b7db3979
|
Attempted a square wave, made the Vic itself responsible for address manipulation re:the 6560.
|
2016-06-09 22:05:17 -04:00 |
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Thomas Harte
|
e99055bedb
|
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.
|
2016-06-08 22:15:24 -04:00 |
|
Thomas Harte
|
581eace478
|
Increased logging slightly, ensured all of colour RAM can be read, slightly improved the 2600 pixel decoder.
|
2016-06-07 22:01:14 -04:00 |
|
Thomas Harte
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26ab96868a
|
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.
|
2016-06-07 19:15:18 -04:00 |
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Thomas Harte
|
c7c55528e2
|
Realised that registers appear also to be readable.
|
2016-06-06 20:29:39 -04:00 |
|
Thomas Harte
|
64539a2b24
|
Advanced to having some characters displayed, even though they're obviously very much incorrect and the display is still rolling.
|
2016-06-06 07:35:35 -04:00 |
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Thomas Harte
|
9e9e50edb1
|
Added guess on how colour memory and the 12-bit bus possibly works.
|
2016-06-05 16:28:06 -04:00 |
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Thomas Harte
|
2ab21e7a3c
|
Switched to a real (unexpanded) memory map, meaning that nonsense is no longer being supplied to the VIC.
|
2016-06-05 16:00:35 -04:00 |
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Thomas Harte
|
9566c87532
|
Added enough to the machine that the 6560 can now produce output if it wishes.
|
2016-06-05 12:11:12 -04:00 |
|
Thomas Harte
|
b56482607e
|
Added just enough that the 6502 should now be operating correctly.
|
2016-06-05 11:44:29 -04:00 |
|
Thomas Harte
|
0b221e773f
|
Fixed ROM naming and sizes, ensured machines without sound outputs don't end up with an audio queue.
|
2016-06-05 11:20:05 -04:00 |
|
Thomas Harte
|
f922d38ed2
|
The Vic now captures the ROMs sent to it and has just enough infrastructure to get to a black screen. Progress!
|
2016-06-05 10:51:07 -04:00 |
|
Thomas Harte
|
12243c40ad
|
Kicking the ball a little further down the road, ROMs and PRGs now reach the actual emulated machine.
|
2016-06-05 09:06:59 -04:00 |
|
Thomas Harte
|
b10a06e700
|
A CRT is still absent but this moves the ball back into the C++ side's court.
|
2016-06-04 22:00:50 -04:00 |
|
Thomas Harte
|
404873fe58
|
Started sketching out infrastructure for Vic-20 support.
|
2016-06-04 21:43:50 -04:00 |
|
Thomas Harte
|
604862b20b
|
Fixed playfield/missile and playfield/ball collisions.
|
2016-06-02 22:36:52 -04:00 |
|
Thomas Harte
|
e3b95b8d2b
|
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.
|
2016-06-02 21:22:55 -04:00 |
|
Thomas Harte
|
11073daee1
|
Issues appear to be around timing generally. Working on it.
|
2016-06-02 20:15:48 -04:00 |
|
Thomas Harte
|
7aac306a12
|
Quick fix to the polynomials.
|
2016-06-02 19:56:02 -04:00 |
|
Thomas Harte
|
253e5a4203
|
With no regard to performance whatsoever, endeavoured to bring sound to the 2600. It's very scratchy, so something is wrong.
|
2016-06-02 19:50:16 -04:00 |
|
Thomas Harte
|
1e0fcbbee8
|
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.
|
2016-06-01 19:53:16 -04:00 |
|
Thomas Harte
|
40c4544fb7
|
Got the basic sound pipeline pumping, just enough for static-level audio seemingly to work. Berzerk VE says "intruder alert, intruder alert", anyway.
|
2016-06-01 19:27:04 -04:00 |
|
Thomas Harte
|
8dc66167be
|
Made an attempt to consolidate the Objective-C++ side of things based on the incoming CRTMachine::Machine.
|
2016-05-31 22:16:20 -04:00 |
|
Thomas Harte
|
5c4f35e13f
|
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.
|
2016-05-31 21:23:44 -04:00 |
|
Thomas Harte
|
3fc80ea01f
|
Rethought, hopefully perfecting, sprite timing.
|
2016-05-30 19:56:36 -04:00 |
|