Thomas Harte
|
d335991e60
|
Shifted code out of the header.
|
2016-10-20 20:53:17 -04:00 |
|
Thomas Harte
|
9c956f83b8
|
Made it slightly more clear that the correct test is conformed to.
|
2016-10-20 19:23:36 -04:00 |
|
Thomas Harte
|
21cfb39ed9
|
Added 60Hz output support.
|
2016-10-20 07:34:23 -04:00 |
|
Thomas Harte
|
5c69728625
|
Introduced a memory fuzzer, and ensured the Oric uses it.
|
2016-10-19 21:31:50 -04:00 |
|
Thomas Harte
|
734b575d30
|
Ensured no attempt to write to pixel storage if none was available.
|
2016-10-19 21:17:27 -04:00 |
|
Thomas Harte
|
ca28e3c64e
|
Ensured the AY is pumped linearly, not exponentially.
|
2016-10-18 22:21:06 -04:00 |
|
Thomas Harte
|
9669a5ec9b
|
Switched to a more authentic interfacing to the AY.
|
2016-10-18 19:32:15 -04:00 |
|
Thomas Harte
|
988bbb5ab1
|
Ensured AY registers aren't rewritten just because of a synchronise event. A stall prior to figuring out proper bus logic, clearly.
|
2016-10-17 08:05:57 -04:00 |
|
Thomas Harte
|
1a57e89ff0
|
Altered phase so that it now merely accounts for accumulated error across a frame. Can probably do better.
|
2016-10-17 08:04:15 -04:00 |
|
Thomas Harte
|
61ad0f8bdc
|
Fixed inverse characters, added an extra per-frame phase change, based on empirical observation, ensured header guard won't become ambiguous.
|
2016-10-16 22:14:01 -04:00 |
|
Thomas Harte
|
a67afb7efa
|
Switched to a tight crop on the pixel part of the display.
|
2016-10-15 21:43:46 -04:00 |
|
Thomas Harte
|
a608bbebfb
|
Performed enough wiring to put the onus back onto OricTAP to do appropriate things.
|
2016-10-15 21:32:59 -04:00 |
|
Thomas Harte
|
6d7c3f6ac2
|
Factored out the now-sampling binary-level tape player from the Vic and connected it up to the Oric.
|
2016-10-15 21:21:18 -04:00 |
|
Thomas Harte
|
9730e8247f
|
Ensured propagation of synchronise messages, added enough to do plain tone. Probably. So: noise and envelopes missing. And it's all far too quiet.
|
2016-10-15 21:04:21 -04:00 |
|
Thomas Harte
|
51bdac27ae
|
Made some AY advances; it's now being polled for samples and collecting more information on what it needs to output.
|
2016-10-15 17:45:39 -04:00 |
|
Thomas Harte
|
da9c9ad51a
|
Added in the missing keys; added variable phase to the video.
|
2016-10-14 22:39:27 -04:00 |
|
Thomas Harte
|
288d10c253
|
Got some keyboard reaction.
|
2016-10-14 21:44:15 -04:00 |
|
Thomas Harte
|
3dbb602419
|
This seems to be a bit more likely.
|
2016-10-14 21:36:59 -04:00 |
|
Thomas Harte
|
138eabcff4
|
Continued in my effort to wire up a keyboard. Will need further to continue.
|
2016-10-14 21:35:15 -04:00 |
|
Thomas Harte
|
d8e4c488c2
|
Started iterating towards having an AY and a fully-working keyboard.
|
2016-10-14 21:18:03 -04:00 |
|
Thomas Harte
|
8867ad647c
|
Made an attempt at implementing the loopbacks necessary for diagnostics.
|
2016-10-13 21:47:12 -04:00 |
|
Thomas Harte
|
41e7eff6c8
|
Added a VIA. Now it's time to find out how poor my 6522 emulation is.
|
2016-10-13 20:50:55 -04:00 |
|
Thomas Harte
|
c9962f6502
|
Made an almost complete implementation of video. Just one row of the diagnostics cartridge seems to be off, showing thw wrong character set.
|
2016-10-13 19:34:29 -04:00 |
|
Thomas Harte
|
69920a4979
|
Made some basic first attempt at parsing video attributes; ensured lowest byte of ROM is readable.
|
2016-10-13 07:59:11 -04:00 |
|
Thomas Harte
|
ae48ad1bb4
|
Meaningful text! Albeit with the initial 'O' of 'Oric' missing. I guess control codes and NMIs next?
|
2016-10-12 22:03:54 -04:00 |
|
Thomas Harte
|
120b2d9e33
|
Switched to using a diagnostic ROM for now, as it'll definitely boot without initially requiring either a 6522 or AY. Have some forms appearing which imply I'm not doing badly, at least up to not knowing where I'm supposed to get character pixels from.
|
2016-10-12 21:52:47 -04:00 |
|
Thomas Harte
|
1f857c619b
|
Fixed timing issues. Static box of frame achieved!
|
2016-10-12 21:42:36 -04:00 |
|
Thomas Harte
|
304f0999cd
|
Made a faulty but hopefully creditable attempt to demarcate an Oric frame.
|
2016-10-12 21:29:21 -04:00 |
|
Thomas Harte
|
8c8a71107e
|
Added just enough wiring to add something that will generate the video, one day.
|
2016-10-12 19:20:23 -04:00 |
|
Thomas Harte
|
e6937d8003
|
Ensured that the ROM gets installed. So next for some video action?
|
2016-10-12 18:51:02 -04:00 |
|
Thomas Harte
|
4a062c616f
|
Added enough wiring to get Oric TAPs through to a completely unimplemented Oric emulation.
|
2016-10-11 22:20:13 -04:00 |
|
Thomas Harte
|
922dd6a586
|
Hit up the other two kinds of audio generator.
|
2016-10-07 17:10:00 -04:00 |
|
Thomas Harte
|
de658b70d7
|
That's thread safety, subject to the async task queue being made to work...
|
2016-10-07 17:02:36 -04:00 |
|
Thomas Harte
|
2d26feb073
|
Added mappings for the previously-missing characters @, [ and ].
|
2016-10-04 22:03:53 -04:00 |
|
Thomas Harte
|
f9ee6803df
|
It's likely this should be set at startup too, based on latest info.
|
2016-10-03 22:16:10 -04:00 |
|
Thomas Harte
|
97304e22f0
|
Adjusted per tests on StarDot; it appears the tape interrupts may fire during audio output, as if in tape output mode.
|
2016-10-03 20:03:14 -04:00 |
|
Thomas Harte
|
dae6b45464
|
Ensured the always-on bit of the interrupt status register is indeed on.
|
2016-10-03 19:15:31 -04:00 |
|
Thomas Harte
|
cd1ab09701
|
The Vic-20 now inserts ROMs again.
|
2016-09-29 20:15:25 -04:00 |
|
Thomas Harte
|
79412dc84d
|
Upped MFM clock cycles, switched back to using the typer for the ADFS and adjusted ADFS ROM slots.
|
2016-09-28 21:28:34 -04:00 |
|
Thomas Harte
|
4db086949a
|
Made an attempt to add MFM decoding to the 1770; ensured something is returned when reading the Plus 3 status register again.
|
2016-09-25 21:38:52 -04:00 |
|
Thomas Harte
|
572d5587d9
|
Made a first stab at enabling multi-disk machines and thereby obeying (some of) the Plus 3's status register.
|
2016-09-25 21:24:16 -04:00 |
|
Thomas Harte
|
9bbcbd1001
|
Renamed class, intending to turn a Disk::Drive into literally just that, and have a thing with a PLL that consumes events be a Controller .
|
2016-09-25 20:05:56 -04:00 |
|
Thomas Harte
|
7f4c78139c
|
Attempted to ensure that ADFS disks get to an appropriately-configured Electron. Not immediately sure why the shift press isn't working; doesn't need to be dealt with immediately.
|
2016-09-25 19:59:46 -04:00 |
|
Thomas Harte
|
6084020ab3
|
Added shift-break as a better way to boot suitable disks. Continued attempting to clean the 1770.
|
2016-09-25 14:11:22 -04:00 |
|
Thomas Harte
|
ce4100e5b9
|
Fixed slots for DFS and ADFS to sideways RAM; continued working on the 1770 to get as far as trying to get the body of a sector.
|
2016-09-24 22:04:54 -04:00 |
|
Thomas Harte
|
8db0030068
|
Fixed ROM loading by the Electron, turned the WD1770 into a 'disk drive' (it'll do for now), persuaded it to get all the way through a very specifically convenient type 1 command.
|
2016-09-20 22:14:33 -04:00 |
|
Thomas Harte
|
3b97b038b9
|
Corrected and sketched out state machine far enough to get to a complaint about unhandled work.
|
2016-09-20 15:56:31 -04:00 |
|
Thomas Harte
|
e358057440
|
Added a WD1770 run_for_cycles call. So I really can now move that as far as reporting that it has no disk?
|
2016-09-20 07:42:17 -04:00 |
|
Thomas Harte
|
cd5939501f
|
Treading water some more, ensured the DFS and ADFS ROMs get to the Electron. It now even inserts the DFS ROM if it has a DFS disk image. Might need to make it a sideways RAM though? Regardless, the next job surely — surely! — has to be to stop avoiding the 1770?
|
2016-09-20 07:36:57 -04:00 |
|
Thomas Harte
|
a9e65e9b7a
|
Tweaked disk side density, added call-outs to a WD1770 if the Electron had one (albeit without run_for_cycles yet as I need to figure out the clock rate), added a shell of the basic functions of the WD1770. No implementation yet.
|
2016-09-19 22:06:56 -04:00 |
|
Thomas Harte
|
64f2538b1f
|
Added CRC checking to DFS comprehension; fixed a bunch of places where I'd used Objective-C's #import rather than #include .
|
2016-09-19 08:16:06 -04:00 |
|
Thomas Harte
|
142254a478
|
Resolved failure to open disks that arrive through analysis.
|
2016-09-17 18:11:58 -04:00 |
|
Thomas Harte
|
ee8510984f
|
Added just enough wiring to restore the 2600 to functionality.
|
2016-09-15 19:34:45 -04:00 |
|
Thomas Harte
|
e3571e8b9e
|
Added insurance against an infinite loop should the tape be exhausted.
|
2016-09-12 22:22:23 -04:00 |
|
Thomas Harte
|
40660fe680
|
Made yet another guess at Commodore analysis. Elevated fast tape-related unnatural speed up to the OS-side mechanisms.
|
2016-09-12 22:06:03 -04:00 |
|
Thomas Harte
|
e54a2326a3
|
Made attempt to run at zero cost while processing tape input.
|
2016-09-11 17:34:02 -04:00 |
|
Thomas Harte
|
eeec516fa6
|
Implemented seeking on tapes, mucked about a bit more with the Commodore analyser, at least temporarily removed cropping from the Vic emulator.
|
2016-09-11 17:09:00 -04:00 |
|
Thomas Harte
|
8c84f3581a
|
Attempted to bring some uniformity in application of configurations.
|
2016-09-08 05:32:17 -04:00 |
|
Thomas Harte
|
50175a9aed
|
Added logic to try to spot when the first program is BASIC and, if so, what the correct memory model is, then to get that information to the Vic. Though it currently then gets overwritten by the view controller. Grrrr.
|
2016-09-07 22:17:19 -04:00 |
|
Thomas Harte
|
21e5f407d8
|
I need to get a bit more definitive on naming but this gets all the way to setting a configuration upon an Electron.
|
2016-08-31 22:03:42 -04:00 |
|
Thomas Harte
|
56c0d70c1f
|
Gave disks their own namespace.
|
2016-08-27 17:15:09 -04:00 |
|
Thomas Harte
|
c0402d0c2b
|
Gave tapes their own namespace.
|
2016-08-27 17:09:45 -04:00 |
|
Thomas Harte
|
55ada536ac
|
Added a test call, further mutated result structure.
|
2016-08-27 14:25:16 -04:00 |
|
Thomas Harte
|
dab3580111
|
Experimental: can I afford a lower sampling rate if there's a low-pass filter in effect?
|
2016-08-22 22:18:05 -04:00 |
|
Thomas Harte
|
1541273785
|
Moved responsibility for throwing in a low-pass filter up to the Vic, appropriately.
|
2016-08-21 18:13:31 -04:00 |
|
Thomas Harte
|
99157ad6b2
|
Ensured the 6560 knows its real audio clock on a PAL machine; removed some stray semicolons.
|
2016-08-19 13:35:34 -04:00 |
|
Thomas Harte
|
e985c72ce8
|
Removed a dead special case.
|
2016-08-19 12:23:06 -04:00 |
|
Thomas Harte
|
4edd1214f1
|
This has now successfully loaded its first PRG-as-a-tape.
|
2016-08-19 10:58:42 -04:00 |
|
Thomas Harte
|
2935848f35
|
Adopted header/header/data/data pattern. But still not complete joy.
|
2016-08-17 08:03:34 -04:00 |
|
Thomas Harte
|
dfe9fb83ef
|
This proves that bytes are being deposited properly. For the first 36 anyway, and with no announcement.
|
2016-08-16 21:09:50 -04:00 |
|
Thomas Harte
|
12f8aff65b
|
Lengths I'd taken seem to have been for dipoles, not single poles. So I just doubled the clock rate. Also I was producing each dipole as high then low, when they should probably be low then high. The Vic now at least recognises that something is happening on the tape.
|
2016-08-16 19:46:53 -04:00 |
|
Thomas Harte
|
ca2dc6b6c4
|
Ensured ROMs survive in the new memory model.
|
2016-08-15 19:56:01 -04:00 |
|
Thomas Harte
|
38aec44d85
|
Made sufficient changes for the Vic itself to believe it can recast a PRG as a tape and insert it that way. So now the ball is in the court of: how the heck are Commodore tapes encoded?
|
2016-08-15 19:44:41 -04:00 |
|
Thomas Harte
|
547aefb696
|
Slightly adjusted PRG strategy, made a note about where next.
|
2016-08-14 16:36:42 -04:00 |
|
Thomas Harte
|
d9016909ed
|
Added some wiring for PAL/NTSC mode switching on the Vic, making an attempt to simplify the whole loop of having different clock rates.
|
2016-08-14 13:33:20 -04:00 |
|
Thomas Harte
|
a547b7e1d8
|
Took basic steps towards supporting memory expansions.
|
2016-08-13 17:21:25 -04:00 |
|
Thomas Harte
|
142774be37
|
Collapsed 6560 template to a more direct loop, albeit with quite a bit still left to fix.
|
2016-08-09 21:10:53 -04:00 |
|
Thomas Harte
|
12bad8f23f
|
Turned the 6560 into an ordinary template, similar to the rest of the project, albeit right now with a fairly shonky internal implementation. Fixed a Mac-specific interface sizing issue.
|
2016-08-09 20:41:05 -04:00 |
|
Thomas Harte
|
285a288c80
|
Switched to two cycles of options loading, meaning that they get set before files are inserted. Might need some further work?
|
2016-08-07 21:48:09 -04:00 |
|
Thomas Harte
|
be54d8040e
|
Made a first stab at having automatic loading be optional. But things are currently arranged such that the machine options are communicated too late to have an effect. So work to do.
|
2016-08-06 17:39:27 -04:00 |
|
Thomas Harte
|
3e65450a54
|
Converted the 6560 fully into a template; worked on allowing the typer to run at a much faster rate where hardware has some trigger by which it can request the next key.
|
2016-08-06 14:33:24 -04:00 |
|
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 |
|
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
|
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 |
|
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 |
|
Thomas Harte
|
9e9e50edb1
|
Added guess on how colour memory and the 12-bit bus possibly works.
|
2016-06-05 16:28:06 -04:00 |
|
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 |
|
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 |
|
Thomas Harte
|
8b342f77a9
|
Made an attempt further to rationalise timing.
|
2016-05-27 21:51:27 -04:00 |
|
Thomas Harte
|
91d3453cc1
|
Switched to looking backwards rather than forwards.
|
2016-05-27 14:33:08 -04:00 |
|
Thomas Harte
|
106ddae907
|
Sprites are still a pixel off but better; made some attempt to move things outside of the loop.
|
2016-05-25 21:43:19 -04:00 |
|
Thomas Harte
|
40c2c0bd2d
|
Minor simplifications and improvements. Still trying to figure out what's causing the non-linear edge addressing.
|
2016-05-25 21:12:25 -04:00 |
|
Thomas Harte
|
b01b474e36
|
I'm back to thinking that resets are deferred but pixel counts are live.
|
2016-05-25 07:32:25 -04:00 |
|
Thomas Harte
|
758806f924
|
Introduced a separate queue for pixels, which may or may not be correct.
|
2016-05-24 21:39:57 -04:00 |
|
Thomas Harte
|
0b081831a9
|
Set up a pipeline for all pixels that attempts to allow for appropriate delays.
|
2016-05-24 07:58:26 -04:00 |
|
Thomas Harte
|
5c1e594937
|
Realised there's a clocking delay on starting horizontal move. Which fixes Coke Zero.
|
2016-05-22 21:45:40 -04:00 |
|
Thomas Harte
|
c3e719c4ab
|
Added missile-to-player offsetting. Completing the list of graphics-related TODOs.
|
2016-05-22 17:01:56 -04:00 |
|
Thomas Harte
|
4c6d4d899d
|
Ensured that resetting the horizontal timer affects phase.
|
2016-05-22 16:29:53 -04:00 |
|
Thomas Harte
|
df93d7849d
|
Re-enabled the ball.
|
2016-05-22 14:38:14 -04:00 |
|
Thomas Harte
|
0242924fb4
|
Various bits of caveman debugging appearing and disappearing, switched to latching ball behaviour.
|
2016-05-22 14:26:02 -04:00 |
|
Thomas Harte
|
5e220562e4
|
Actually, the four-clock delay, with palette taking effect immediately, appears to be correct. So back to the drawing board on that.
|
2016-05-21 21:44:54 -04:00 |
|
Thomas Harte
|
4eded9b9d0
|
Re-enabled collisions.
|
2016-05-21 13:05:36 -04:00 |
|
Thomas Harte
|
b1c84f5402
|
Counters run every scan line regardless of blank and sync. Also played further with timing.
|
2016-05-21 12:54:39 -04:00 |
|
Thomas Harte
|
470c90428a
|
Switched to two-register implementation of VDELP, etc.
|
2016-05-21 10:26:27 -04:00 |
|
Thomas Harte
|
36d19cb6cf
|
Made an attempt at properly pumping timers during hmove.
|
2016-05-21 10:18:15 -04:00 |
|
Thomas Harte
|
a952813036
|
Fixed missile sizes, played about with ball placement.
|
2016-05-19 18:30:17 -04:00 |
|
Thomas Harte
|
cf5b8ab92e
|
This is now approximately back to where it was on Cosmic Ark.
|
2016-05-19 08:30:10 -04:00 |
|
Thomas Harte
|
40600b4bcb
|
Made sprite placement consistent at least. Not necessarily yet correct.
|
2016-05-18 22:07:24 -04:00 |
|
Thomas Harte
|
e61392d3fb
|
Fixed incorrect duplication.
|
2016-05-18 21:50:28 -04:00 |
|
Thomas Harte
|
8c7ce1ec3f
|
Attempted to fix sprite sizing and, again, missile repetition.
|
2016-05-18 21:41:25 -04:00 |
|
Thomas Harte
|
d013d46337
|
Fixed object motion decoding and checking of the repeat mask for missile graphics.
|
2016-05-18 21:36:28 -04:00 |
|
Thomas Harte
|
83ed6a82cf
|
Fixed: asserting vertical blank doesn't affect underlying timing.
|
2016-05-18 18:49:40 -04:00 |
|
Thomas Harte
|
877c55b5c5
|
Threw in missiles. To 'complete' graphics output. Or, rather, to move me on to debugging.
|
2016-05-18 07:54:44 -04:00 |
|
Thomas Harte
|
354143a78c
|
Reintroduced an attempt to plot sprites.
|
2016-05-18 07:51:25 -04:00 |
|
Thomas Harte
|
0b99649b0f
|
Had a first shot at triggering player and missile resets.
|
2016-05-18 07:31:05 -04:00 |
|
Thomas Harte
|
b8708b805c
|
The vertical blank flag now works again.
|
2016-05-17 22:02:57 -04:00 |
|
Thomas Harte
|
a1e63e8320
|
Attempted to generalise on pixel counter storage, at least. Further adjusted background timing but I'm still not sure.
|
2016-05-17 21:41:32 -04:00 |
|
Thomas Harte
|
ad6f405483
|
Fixed: was off by one on pixels, allowing four extra pixel output cycles per line.
|
2016-05-17 19:02:32 -04:00 |
|
Thomas Harte
|
c96674b341
|
Made genuine first approximate attempt at hmove.
|
2016-05-17 18:35:40 -04:00 |
|
Thomas Harte
|
d170bb14e6
|
Extended scheduling plans, inserted initial events for hmove, albeit not yet implemented.
|
2016-05-17 18:21:49 -04:00 |
|
Thomas Harte
|
6a961c4d28
|
Added something of the ball counter, but without yet a working HMOVE it's prone to error.
|
2016-05-17 07:18:14 -04:00 |
|
Thomas Harte
|
7d3cf76576
|
Generalised slightly, to allow events to be queued up to eight cycles in advance; most importantly each event gets to pick its own delay.
|
2016-05-17 07:09:18 -04:00 |
|
Thomas Harte
|
3d003070b3
|
Made an attempt better to generalise the idea of things with 4 CLK delays.
|
2016-05-16 21:54:27 -04:00 |
|
Thomas Harte
|
4ad074fc78
|
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.
|
2016-05-16 19:55:56 -04:00 |
|
Thomas Harte
|
f19ed2e8f8
|
Started merely attempting to reintroduce the background layer.
|
2016-05-16 19:04:13 -04:00 |
|
Thomas Harte
|
9d92ad659f
|
Established the basic timing loop, albeit without clocking delays yet.
|
2016-05-16 08:01:29 -04:00 |
|
Thomas Harte
|
cca53598d3
|
Made another run at 2600 colours.
|
2016-05-14 16:52:24 -04:00 |
|
Thomas Harte
|
8d52765f40
|
Realised why new shaders weren't taking. Very negligibly decreased Atari drawing cost.
|
2016-05-12 22:22:24 -04:00 |
|
Thomas Harte
|
6d65bc9b3a
|
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 |
|
Thomas Harte
|
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 |
|
Thomas Harte
|
5a4262d74e
|
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 |
|
Thomas Harte
|
1142c86811
|
Slightly simplified conditional.
|
2016-05-07 18:38:51 -04:00 |
|
Thomas Harte
|
bf9917707e
|
Merge branch 'master' into Glitches
|
2016-05-05 08:31:40 -04:00 |
|
Thomas Harte
|
fea32869b0
|
Implemented what I now believe to be the real paging logic.
|
2016-05-05 08:28:06 -04:00 |
|
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 |
|
Thomas Harte
|
3af97d4069
|
Eliminated redundant variable.
|
2016-04-26 19:57:05 -04:00 |
|
Thomas Harte
|
6c567d166a
|
Fixed colour burst acceptance, switched to an integral single byte streaming of Atari colours.
|
2016-04-25 20:56:15 -04:00 |
|
Thomas Harte
|
9b64f64db7
|
Attempted to normalise some style decisions.`
|
2016-04-24 22:32:24 -04:00 |
|
Thomas Harte
|
7a8d100861
|
Found a new working formula for NTSC Atari 2600 colours.
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2016-04-24 22:02:00 -04:00 |
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Thomas Harte
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d221c712b0
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Ensured GL context is active when destructing CRTOpenGL.
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2016-04-24 20:34:25 -04:00 |
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Thomas Harte
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db908a7547
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Adjusted Atari to using its non-standard line lengths.
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2016-04-24 19:23:30 -04:00 |
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Thomas Harte
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9260d97b03
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Oh, of course, it's that the output vertex array doesn't get initialised unless there's an RGB shader program. Silly oversight. Fixed. And switched back to TV output for correct colours.
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2016-04-24 17:56:36 -04:00 |
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Thomas Harte
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d0f9a6c2f5
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Added a dump-the-input default RGB output shader. Which at least proves that the Atari 2600 is generally still working.
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2016-04-24 17:35:25 -04:00 |
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Thomas Harte
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80a3169674
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Started reviving the Atari 2600 emulation. Put new startup sequence into place.
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2016-04-24 06:56:08 -04:00 |
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Thomas Harte
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ae2760e034
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Colour phase is now updated and varies per line.
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2016-04-21 21:07:29 -04:00 |
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Thomas Harte
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7aa87723a9
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Added: key states are all cleared if the window loses focus. Which resolves sticky key issues. Allowing me just to use command+option+O for options and map both command and option as FUNC.
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2016-04-19 21:29:10 -04:00 |
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Thomas Harte
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66f2c10c04
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Resolved potential crash if tape requests are made without one inserted. Softened glFinish to glFlush, though I'm still not sure I should strictly need even that.
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2016-04-19 21:00:48 -04:00 |
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Thomas Harte
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3d53f157de
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Output selection now takes effect. So I can stop accidentally committing changes back and forth.
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2016-04-18 08:27:58 -04:00 |
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Thomas Harte
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94f148e212
|
Wired in options, at least getting as far as the Objective-C bridge. Then fast loading makes it to the emulated machine, display output type doesn't.
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2016-04-18 08:21:00 -04:00 |
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Thomas Harte
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499f7ace07
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Re-enabled working video output for the Electron for the day and consolidated the rough metric I'm using to pick a number of taps for the audio filter.
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2016-04-17 20:43:20 -04:00 |
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Thomas Harte
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6ff9ffba6c
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Switching temporarily to an attempt to draw input runs as if RGB: shader compiles, fixed a race condition on out-of-bounds accesses for the source buffer.
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2016-04-17 15:51:28 -04:00 |
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Thomas Harte
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104f44f27f
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Attempted to improve deinterlacing, gave the CRT full control over blend mode, switched back to 2000000Mhz audio.
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2016-04-14 22:20:47 -04:00 |
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Thomas Harte
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6a17c2992d
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Introduced a compile-time configurable audio divider, set it arbitrarily to '8' for now. Discovered why my graphics aren't centred and added a TODO.
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2016-04-13 22:31:59 -04:00 |
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Thomas Harte
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026ce0255f
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Source runs are now captured, and that buffer appropriately reset.
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2016-04-13 22:20:13 -04:00 |
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Thomas Harte
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2ea02ed127
|
A source array buffer is also now created, mapped, unmapped, etc.
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2016-04-13 22:14:18 -04:00 |
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Thomas Harte
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955e185790
|
Minor simplification.
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2016-04-13 19:19:04 -04:00 |
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Thomas Harte
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4d889d9c7f
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Made an attempt slightly to simplify the fragment processor, at both ends.
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2016-04-12 22:35:11 -04:00 |
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Thomas Harte
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2cc72169ff
|
Ensured machines can nominate their own aspect ratio windows. Switched to 11/10 for the Electron.
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2016-04-11 23:12:56 -04:00 |
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Thomas Harte
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7276a06cc0
|
Added a helper to calculate a visible rect based on output timings, used it to scale the Electron output up to the full window size.
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2016-04-11 21:47:23 -04:00 |
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Thomas Harte
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a3c2cd880e
|
I discovered a further post on this on the STH forums; apparently the Electron simply asserts sync continuously. No breaks.
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2016-04-11 21:01:09 -04:00 |
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Thomas Harte
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bdb99ba92f
|
Corrections back towards composite output: fixed misnamed constant, ensured the CRT doesn't write nonsense to the output buffer, ensured it grows three vertices at a time rather than six when desired. Net effect should be that the output stage is working again, with the input processing remaining to fill in.
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2016-04-10 22:56:52 -04:00 |
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Thomas Harte
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8701366277
|
Switched horizontal sync detection back to differential, switched the Electron to an XOR-style sync output (believed to be accurate, but I need to check), fixed some latent issues around vertical sync detection.
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2016-04-10 21:34:40 -04:00 |
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Thomas Harte
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e617bd2bb3
|
Turned audio quality up to the maximum, at least for now.
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2016-04-06 21:12:22 -04:00 |
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Thomas Harte
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5aa6da221f
|
Shifted responsibility for byte shifts, probably to a more logical place.
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2016-04-05 22:19:14 -04:00 |
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Thomas Harte
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2248769df9
|
Pulled a bunch of selection parts outside of the loops. Probably exhausting this angle of attack.
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2016-04-05 22:17:44 -04:00 |
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Thomas Harte
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8f87973a96
|
Switched to table-based byte to output conversion.
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2016-04-05 22:07:10 -04:00 |
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Thomas Harte
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e35456612a
|
Simplified 40-column to pixel conversion.
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2016-04-05 20:44:05 -04:00 |
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Thomas Harte
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6dbd20ffde
|
Expanded interface to rgb_sample to eliminate its need to make assumptions about globals, used expanded interface to compact Electron data to two pixels per byte.
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2016-04-05 20:32:55 -04:00 |
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Thomas Harte
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7838507a7a
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Simplified sound generation.
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2016-04-04 22:22:19 -04:00 |
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Thomas Harte
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729fddea1c
|
Switched to integer textures, likely to simplify for most use cases.
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2016-04-04 19:39:01 -04:00 |
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Thomas Harte
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3ca58b2a57
|
Attemted further to diminish jumpiness.
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2016-03-22 22:07:30 -04:00 |
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Thomas Harte
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8cd5d40e00
|
Made an attempt to reduce the amount of data heading to the GPU.
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2016-03-22 21:16:32 -04:00 |
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Thomas Harte
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902017a962
|
Fixes: drop any processing backlog, try not to allow an Electron document to close mid-draw, perform a frame grab even if the emulated machine is over-processing, really really don't create a CRT until it's safe.
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2016-03-20 18:42:37 -04:00 |
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Thomas Harte
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fb6fb5d948
|
Switched to two-phase setup to deal with OpenGL scheduling.
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2016-03-20 13:50:13 -04:00 |
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Thomas Harte
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aa8a192c7e
|
Simplified API down to their being a single texture with a specified depth.
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2016-03-19 17:37:55 -04:00 |
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Thomas Harte
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b074860031
|
Updated to latest information on interrupt timing.
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2016-03-18 21:11:25 -04:00 |
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Thomas Harte
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4cd0aa3416
|
Completed FIR filter based audio output.
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2016-03-15 23:37:35 -04:00 |
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Thomas Harte
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0edf165401
|
Fixed sound pitch, though I'm not yet exactly sure why.
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2016-03-14 22:52:16 -04:00 |
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Thomas Harte
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9a492ac15f
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Made a further guess at the state interrupts would probably be left; slightly simplified interface.
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2016-03-14 22:42:52 -04:00 |
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Thomas Harte
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15120d8fb6
|
Switched to probably more accurate contended memory, resolved issue of not leaving the tape data received interrupt set when returning a byte from the fast tape, fixing Joe Blade, and tested slightly further to determine that interrupts probably signal upon entry into horizontal sync.
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2016-03-14 19:29:28 -04:00 |
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Thomas Harte
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fb26b38ff9
|
This is as simplified as things seem to be able to get without breaking at least Northern Star. Joe Blade et al remain stubbornly broken but I'm not immediately able to determine why.
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2016-03-13 19:55:20 -04:00 |
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Thomas Harte
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f797e6b5b6
|
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
|
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
|
1c4acfb599
|
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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