Thomas Harte
|
d832e5e10d
|
Reduced 1540 PLL to running at 4Mhz. Which is possibly correct (?) Made minor change to avoid divide if possible.
|
2016-08-02 21:28:50 -04:00 |
|
Thomas Harte
|
5d40d70c92
|
Fixed 6560 addressing error, added an autotyper for Vic disks (more work potentially needed), fixed semantics for testing whether a 6502 is about to reset.
|
2016-08-01 10:32:32 -04:00 |
|
Thomas Harte
|
bc10b3ee9a
|
It appears the problem is as simple as sectors being counted from zero.
|
2016-08-01 10:08:38 -04:00 |
|
Thomas Harte
|
f5e4ea3351
|
Some minor tidying, lots more of the caveman stuff as I try to determine what I'm doing wrong.
|
2016-08-01 09:43:08 -04:00 |
|
Thomas Harte
|
18744cd98b
|
Slightly updated comments, switched to 1540 ROM so as very slightly to improve loading time.
|
2016-08-01 04:37:30 -04:00 |
|
Thomas Harte
|
b43a7381ae
|
Fixed framing and first-byte-after-sync signalling. Hacked together as parts of it are, loading now appears to work!
|
2016-08-01 04:25:11 -04:00 |
|
Thomas Harte
|
41893b5ef6
|
Put in the absolute minimum logic for drive motor emulation. Drive appears to be attempting head steps.
|
2016-07-31 19:38:51 -04:00 |
|
Thomas Harte
|
740ea0b7e2
|
Added overflow-flag setting logic and ensured disk ROM gets through regardless of ROM/disk installation order.
|
2016-07-31 19:33:18 -04:00 |
|
Thomas Harte
|
0945049cd3
|
Made attempt to connect sync detect and then apply appropriate windowing, posting bytes to the appropriate place.
|
2016-07-31 18:29:44 -04:00 |
|
Thomas Harte
|
198fbbedc7
|
Reeled back all appropriate pieces of caveman debugging.
|
2016-07-31 13:42:34 -04:00 |
|
Thomas Harte
|
2332f72875
|
Formalised clock-rate multiplication within disk drives, discovered that the stepper didn't have ideal behaviour for my timed event loop and hence nailed down the semantics a ilttle more.
(obiter: the 1540 now appears to discern the correct sequence of bits. Framing is off in my test printfs but that's neither here nor there).
|
2016-07-31 13:32:30 -04:00 |
|
Thomas Harte
|
8f62211f5e
|
Wired up the 1540 as a PLL delegate. Which prima facie means it should start receiving a bit stream. Except that I clearly have something in the timing way off — either my flux transitions are far too short or I need to significantly increase the clock rate on the PLL.
|
2016-07-29 12:08:18 -04:00 |
|
Thomas Harte
|
89a1881fef
|
Started turning the 1540 into an actual disk drive.
|
2016-07-29 11:03:09 -04:00 |
|
Thomas Harte
|
ada2f073e0
|
Completed handing of the disk all the way to the 1540.
|
2016-07-10 16:24:46 -04:00 |
|
Thomas Harte
|
6cfc514c2d
|
Made the rote changes necessary to attempt to open and to supply a G64 to the Vic.
|
2016-07-10 12:57:17 -04:00 |
|
Thomas Harte
|
4ca6883f7c
|
Disabled attachment of a 1540 again, as I probably need to move to opening an actual disk image next.
|
2016-07-10 08:03:36 -04:00 |
|
Thomas Harte
|
824d9ea92b
|
Added further comments.
|
2016-07-10 08:01:16 -04:00 |
|
Thomas Harte
|
d8334edf4a
|
Started trying to clean up, including commuting the C1540 source file name to match its class name but mainly by adding documentation.
|
2016-07-10 07:46:20 -04:00 |
|
Thomas Harte
|
c0ab45a73d
|
Disabled a bunch of the caveman debug logging.
|
2016-07-09 22:29:11 -04:00 |
|
Thomas Harte
|
f589d639db
|
Okay, so it seems that sync also works the other way around.
|
2016-07-09 22:25:44 -04:00 |
|
Thomas Harte
|
693c8b2438
|
After all that, it seems likely that inputs just aren't inverted for the Vic.
|
2016-07-09 20:03:38 -04:00 |
|
Thomas Harte
|
656cd211d7
|
Was transmitting bit levels backwards (probably?); 1540 now acknowledges byte received.
|
2016-07-09 18:06:49 -04:00 |
|
Thomas Harte
|
7cc4bf3fe7
|
Hit and hope is getting me nowhere. Time to unit test this thing.
|
2016-07-09 15:40:25 -04:00 |
|
Thomas Harte
|
8827597363
|
Messier and messier, but I've at least attempted to implement hardware attention acknowledge.
|
2016-07-08 19:00:39 -04:00 |
|
Thomas Harte
|
9a08ef61cb
|
Still fumbling in the margins: made an effort not to imply that the 1540 is forever reading syncs.
|
2016-07-07 22:13:18 -04:00 |
|
Thomas Harte
|
199c0e27e0
|
Mostly just random guesses now, to be honest. It's approaching the end of my window for the morning.
|
2016-07-07 07:16:36 -04:00 |
|
Thomas Harte
|
81e6cc34e5
|
Per the ROM disassembly, the Vic's VIA outputs are inverted for the benefit of the serial bus.
|
2016-07-07 06:57:21 -04:00 |
|
Thomas Harte
|
c9479f923b
|
The inversion of truth was clearly just a problematic API. Got explicit. LineLevel might need to become more pervasive.
|
2016-07-07 06:44:13 -04:00 |
|
Thomas Harte
|
dcb86a027a
|
Okay, so the 1540 doesn't toggle the actual attention line. I don't know what it does yet but this helps.
|
2016-07-06 22:31:14 -04:00 |
|
Thomas Harte
|
1baf21827c
|
Since the ROM is well disassembled, let's actually try to be a 1541 first.
|
2016-07-06 22:17:32 -04:00 |
|
Thomas Harte
|
4f174786b5
|
Fixed potential buffer overrun.
|
2016-07-06 21:39:09 -04:00 |
|
Thomas Harte
|
f64cd8cfcb
|
Quick fixes properly to declare the DriveVIA, to ensure its interrupts take effect, and to wire ATN IN to CA1 rather than CB2.
|
2016-07-06 20:22:46 -04:00 |
|
Thomas Harte
|
428fcdb978
|
Centralised and improved serial logging.
|
2016-07-06 07:46:21 -04:00 |
|
Thomas Harte
|
8819711bc8
|
Threw in the second VIA as a currently clearly incorrect thing.
|
2016-07-05 22:22:09 -04:00 |
|
Thomas Harte
|
93c2bb80a2
|
Improved a comment, added independent C[A/B]2 input mode.
|
2016-07-05 21:11:51 -04:00 |
|
Thomas Harte
|
6c4fa4ec5d
|
Improved commenting and initial state communication.
|
2016-07-05 20:57:31 -04:00 |
|
Thomas Harte
|
1e6d90de17
|
Made an attempt properly to deal with initial bus state.
|
2016-07-05 20:52:33 -04:00 |
|
Thomas Harte
|
c3b7d24293
|
It appears that the attention line is also wired to CB2. So the ball is back in the 6522's court.
|
2016-07-05 19:19:46 -04:00 |
|
Thomas Harte
|
11fc43aa04
|
Made an attempt to allow the 1540 to talk back to the Vic, and to receive interrupts. Also slightly disambiguated debugging logging.
|
2016-07-05 19:12:43 -04:00 |
|
Thomas Harte
|
d16b79073e
|
Further fleshing out: added a serial port for the serial bus.
|
2016-07-05 17:27:02 -04:00 |
|
Thomas Harte
|
d1eea6943d
|
Ensured the 1540 ROM gets installed, at least.
|
2016-07-05 16:54:25 -04:00 |
|
Thomas Harte
|
86dabd007b
|
Furthered fleshing out of the 1540. Though it doesn't yet receive a ROM so won't even attempt to do anything meaningful.
|
2016-07-05 16:39:18 -04:00 |
|
Thomas Harte
|
a25fcc7190
|
Made a first attempt at wiring back serial port input.
|
2016-07-05 16:10:54 -04:00 |
|
Thomas Harte
|
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.
|
2016-07-05 14:55:20 -04:00 |
|
Thomas Harte
|
0d3d0fbe4d
|
Created a namespace for Commodore and an empty container file for the 1540[/1] implementation.
|
2016-07-05 13:28:27 -04:00 |
|
Thomas Harte
|
97751a9d86
|
Took the preliminary steps necessary to wire up a serial port.
|
2016-07-05 10:55:47 -04:00 |
|
Thomas Harte
|
a49f2b41cc
|
Added C++ side of things. I think.
|
2016-07-04 21:48:25 -04:00 |
|
Thomas Harte
|
8db44eed3e
|
Added a default implementation of Speaker::skip_samples.
|
2016-07-04 20:48:27 -04:00 |
|
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.
|
2016-07-04 20:34:11 -04:00 |
|
Thomas Harte
|
88964ceac0
|
Eliminated plain pointer passing for object types.
|
2016-07-04 19:33:55 -04:00 |
|
Thomas Harte
|
82b0bc9b58
|
Discovered that this is another meaningful usage of using.
|
2016-07-04 19:10:10 -04:00 |
|
Thomas Harte
|
7e5b631e30
|
Cut some dead code.
|
2016-07-01 19:02:29 -04:00 |
|
Thomas Harte
|
7fa010a463
|
Attempted to add support for the most basic of control line output, and slightly to optimise the Vic.
|
2016-07-01 19:01:22 -04:00 |
|
Thomas Harte
|
ed8f4d0476
|
Added some minor additional bits of documentation.
|
2016-06-30 08:46:29 -04:00 |
|
Thomas Harte
|
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.
|
2016-06-29 19:13:24 -04:00 |
|
Thomas Harte
|
6027cba95f
|
Factored out the stuff of pushing a fast-loading option onwards and storing it within the user defaults.
|
2016-06-27 21:38:14 -04:00 |
|
Thomas Harte
|
e3e6bbb785
|
Removed the colon again, until I can educate myself a little further.
|
2016-06-26 21:38:03 -04:00 |
|
Thomas Harte
|
69d78dfdb3
|
Removed logging.
|
2016-06-26 21:36:26 -04:00 |
|
Thomas Harte
|
1439ca0580
|
Added a quick automatic issuing of the 'LOAD' command.
|
2016-06-26 21:34:37 -04:00 |
|
Thomas Harte
|
843d1fdca7
|
Added some extra logging while trying to determine what's going on; added interrupt clearing for the control lines.
|
2016-06-26 21:30:06 -04:00 |
|
Thomas Harte
|
2a2c3da5d4
|
Added hardwired tape present bit.
|
2016-06-26 19:50:49 -04:00 |
|
Thomas Harte
|
c306d705e1
|
Made a quick first attempt at all-the-way-through tape wiring for the Vic.
|
2016-06-26 19:43:09 -04:00 |
|
Thomas Harte
|
37ba42a52f
|
Factored out the stuff of playing a tape, started basic sketch of the Vic-related classes.
|
2016-06-26 19:03:57 -04:00 |
|
Thomas Harte
|
d5e50f5ea0
|
Got a bit more explicit about how ports are identified on the 6522.
|
2016-06-26 12:30:01 -04:00 |
|
Thomas Harte
|
8d9eb30d82
|
So it sounds like the user-port VIA might actually be connected to NMI?
|
2016-06-25 16:31:35 -04:00 |
|
Thomas Harte
|
8741be5c84
|
Made the slightest possible effort to get TAPs opened and passed to the VIC.
|
2016-06-25 16:24:52 -04:00 |
|
Thomas Harte
|
2bd71e7e9b
|
.reset is the more normal way to reassign a unique_ptr.
|
2016-06-23 20:52:44 -04:00 |
|
Thomas Harte
|
e05003c176
|
Discovered that the VIC and the VIAs can be simultaneously selected. Adjusted bus appropriately.
|
2016-06-22 17:34:42 -04:00 |
|
Thomas Harte
|
454e98302d
|
Slight rearrangement plus a setting of the CSMachine delegate corrects audio after a clock rate change.
|
2016-06-20 22:18:41 -04:00 |
|
Thomas Harte
|
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.
|
2016-06-20 21:47:27 -04:00 |
|
Thomas Harte
|
88e2b382e5
|
Made an attempt at a full and thorough 6532 implementation (and got a bit more explicit about flag size in the 6502).
|
2016-06-20 18:57:35 -04:00 |
|
Thomas Harte
|
b6dd38dad3
|
Corrected type safety warning.
|
2016-06-19 21:41:01 -04:00 |
|
Thomas Harte
|
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.
|
2016-06-19 19:36:34 -04:00 |
|
Thomas Harte
|
65413f078c
|
Factored out the 6532, eventually to make it testable.
|
2016-06-19 18:57:40 -04:00 |
|
Thomas Harte
|
6dd8ea67c9
|
Tested and trimmed delay on typing if resetting.
|
2016-06-19 17:27:23 -04:00 |
|
Thomas Harte
|
05cb47709e
|
Implemented Utility::Typer for the Electron. So that now also receives pastes.
|
2016-06-19 17:25:35 -04:00 |
|
Thomas Harte
|
ef3ed1f436
|
Implemented full paste ability for any machine that is a typer.
|
2016-06-19 16:35:04 -04:00 |
|
Thomas Harte
|
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.
|
2016-06-19 13:46:53 -04:00 |
|
Thomas Harte
|
e7aeed2f03
|
Established a general pattern for machines that can type things. Started working on the Vic typing itself.
|
2016-06-19 13:10:52 -04:00 |
|
Thomas Harte
|
f4915c5ad6
|
Fixed test and added basic implementation of data direction.
|
2016-06-18 17:17:03 -04:00 |
|
Thomas Harte
|
394902f409
|
Switched to clocking the 6522 by the half-cycle. Very trivial test now passes.
|
2016-06-18 13:57:10 -04:00 |
|
Thomas Harte
|
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.
|
2016-06-18 08:51:18 -04:00 |
|
Thomas Harte
|
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.
|
2016-06-16 20:39:46 -04:00 |
|
Thomas Harte
|
fdc854c0c2
|
Fixed tone channels; made an attempt at loading PRGs that are supposed to go into RAM.
|
2016-06-13 21:49:59 -04:00 |
|
Thomas Harte
|
5fc36b956c
|
Attempted most basic sketching of a container for Vic audio.
|
2016-06-13 19:30:52 -04:00 |
|
Thomas Harte
|
4190b42bbb
|
No need for these to live separately, I think.
|
2016-06-13 18:27:18 -04:00 |
|
Thomas Harte
|
19b2f46488
|
Fixed accesses to colour memory.
|
2016-06-12 11:06:19 -04:00 |
|
Thomas Harte
|
4fec625b19
|
Minor cleaning, implemented clearAllKeys.
|
2016-06-12 10:38:21 -04:00 |
|
Thomas Harte
|
167ed9b8bb
|
Added enough to load a PRG as a ROM.
|
2016-06-11 14:00:12 -04:00 |
|
Thomas Harte
|
3e8d383615
|
Improved key map. Possibly enough to type some basic BASIC?
|
2016-06-11 13:19:59 -04:00 |
|
Thomas Harte
|
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.
|
2016-06-11 13:06:01 -04:00 |
|
Thomas Harte
|
271de23ee6
|
Ran on in and introduced a bunch more keys, hopefully to help to diagnose.
|
2016-06-11 12:26:19 -04:00 |
|
Thomas Harte
|
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 |
|
Thomas Harte
|
7a241b5ef5
|
Added just enough hopefully to allow implementation of the keyboard-input VIA.
|
2016-06-11 11:34:39 -04:00 |
|
Thomas Harte
|
12d1cac751
|
Merge branch 'master' into Vic-20
|
2016-06-10 18:23:55 -04:00 |
|
Thomas Harte
|
805e2d15c6
|
Fixed timing when clock is divided.
|
2016-06-10 18:20:16 -04:00 |
|
Thomas Harte
|
1ed04fae1e
|
Resolved 6560 addressing.
|
2016-06-10 18:12:21 -04:00 |
|
Thomas Harte
|
f3b1d7de82
|
... and that's a flashing cursor. Keyboard input next!
|
2016-06-09 22:37:59 -04:00 |
|
Thomas Harte
|
30b7db3979
|
Attempted a square wave, made the Vic itself responsible for address manipulation re:the 6560.
|
2016-06-09 22:05:17 -04:00 |
|
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 |
|