Thomas Harte
|
2e9ef2b0ef
|
Took a shot at reinstating the horizontal blank extend flag.
|
2017-02-09 18:37:19 -05:00 |
|
Thomas Harte
|
70745286a5
|
Ensured this array is properly aligned for the uin32_t accesses I intend to make for background drawing.
|
2017-02-08 20:25:23 -05:00 |
|
Thomas Harte
|
dcb7584060
|
Added the four-cycle playfield output latency and ensured you can't get smaller-than-usual pixels by rapid register value changing.
|
2017-02-08 07:30:32 -05:00 |
|
Thomas Harte
|
a477499724
|
Got a bit more explicit with range returned by get_cycles_until_horizontal_blank and hence attempted a more thorough (/correct) version of WSYNC.
|
2017-02-07 22:14:45 -05:00 |
|
Thomas Harte
|
944d835eea
|
Switched explicitly to an accumulation model for filling the collision buffer.
|
2017-02-06 21:59:28 -05:00 |
|
Thomas Harte
|
8f5039130c
|
Changed index naming order to ensure no out-of-bounds accesses.
|
2017-02-06 21:48:41 -05:00 |
|
Thomas Harte
|
ba165bb70a
|
Made an attempt properly to populate collision registers from the collision buffer.
|
2017-02-06 21:15:55 -05:00 |
|
Thomas Harte
|
474e2e8d2c
|
Fixed once again to respect mid-line palette changes.
|
2017-02-06 20:09:12 -05:00 |
|
Thomas Harte
|
8b8eb787df
|
Fixed complete invisibility.
|
2017-02-06 18:42:58 -05:00 |
|
Thomas Harte
|
66bcdd36f3
|
Made an attempt to introduce an intermediate buffer that ends up with a bit mask of all graphical components present on it, and to use that to infer collision flags and colours, based on playfield priority and colour palette. Immediately yielding: a blank screen. Good work!
|
2017-02-06 18:29:00 -05:00 |
|
Thomas Harte
|
6bcf95042c
|
Started trying to be a bit more explicit about usage, and to divide up drawing responsibility.
|
2017-02-05 17:51:56 -05:00 |
|
Thomas Harte
|
f2437cb257
|
Added some additional documentation, started making steps towards returning sprites, fixed a counter bug that would exhibit as incorrect sync.
|
2017-01-31 20:30:32 -05:00 |
|
Thomas Harte
|
abe04334c2
|
Attempted to retain more player information, and removed the output cursor from class storage as I think it's acceptable as a temporary.
|
2017-01-30 22:42:27 -05:00 |
|
Thomas Harte
|
8545707b54
|
Reinstituted the playfield. Probably needs more buffering though. Time to look into delays.
|
2017-01-30 21:38:58 -05:00 |
|
Thomas Harte
|
2b08758b2b
|
Started capturing playfield/ball and background colours.
|
2017-01-30 08:08:03 -05:00 |
|
Thomas Harte
|
764b528891
|
Made a first attempt at switching to a model that respects blank and sync.
|
2017-01-30 07:19:19 -05:00 |
|
Thomas Harte
|
92754ace7a
|
Some mild fixes get me up to having a rolling screen of vertical lines. Which is what I was hoping for right now!
|
2017-01-29 22:16:23 -05:00 |
|
Thomas Harte
|
d51f185dc7
|
Made an attempt to reintroduce the basic horizontal loop.
|
2017-01-29 15:43:57 -05:00 |
|
Thomas Harte
|
2390358c24
|
Prevented unbounded CPU usage, albeit without yet deciding who has authority for the clock rate.
|
2017-01-29 14:19:26 -05:00 |
|
Thomas Harte
|
2432a3b4d7
|
Fixed condition — >= is smarter.
|
2017-01-29 14:00:01 -05:00 |
|
Thomas Harte
|
9c3597c7e3
|
Attempted to reintroduce enough logic to handle [most of] line timing, such that WSYNC works. Initial objective is to get back to having a working background.
|
2017-01-29 13:47:36 -05:00 |
|
Thomas Harte
|
fba6baaa9c
|
Stubbed and disabled to get back to building.
|
2017-01-28 21:56:01 -05:00 |
|
Thomas Harte
|
a246530953
|
Supposing the TIA were implemented, this is (more or less) what the Atari 2600 would now look like.
|
2017-01-28 21:46:40 -05:00 |
|
Thomas Harte
|
0ffded72a6
|
Created a placeholder class for a factored-out TIA. There's a bit more it'll need to do, like vending (or receiving) a CRT but this is the full hardware stuff, I think.
|
2017-01-28 16:19:08 -05:00 |
|
Thomas Harte
|
6d087ca054
|
Restored 2600 audio.
|
2017-01-25 21:29:19 -05:00 |
|
Thomas Harte
|
be1cb2a551
|
Fixed NTSC phase.
|
2017-01-11 21:31:24 -05:00 |
|
Thomas Harte
|
6153ada33b
|
Fixed Electron's support for automatically booting floppy disks.
|
2017-01-08 14:46:19 -05:00 |
|
Thomas Harte
|
8cd1575891
|
Similar fix to that over in Oric land: ensure a known, effective initial value for the Plus 3's control register.
|
2016-12-28 18:52:36 -05:00 |
|
Thomas Harte
|
90151e2094
|
Fixed to ensure a known initial control register value, which has taken effect.
|
2016-12-28 18:49:32 -05:00 |
|
Thomas Harte
|
a568172758
|
Made steps towards proper CRC generation. Am currently comparing against Oric disk images, as — amongst other things — they include precomputed CRCs.
|
2016-12-28 18:29:37 -05:00 |
|
Thomas Harte
|
4fca30b81f
|
Made the Plus 3 less chatty, documented invalidate_track .
|
2016-12-25 21:06:58 -05:00 |
|
Thomas Harte
|
3805e3d17d
|
Ensured base address is set properly at construction.
|
2016-12-22 22:46:02 -05:00 |
|
Thomas Harte
|
63107cd492
|
Tidied, very slightly.
|
2016-12-15 19:49:25 -05:00 |
|
Thomas Harte
|
a555c5762a
|
Rearranged code, hopefully into a more logical grouping.
|
2016-12-15 19:47:04 -05:00 |
|
Thomas Harte
|
4a7ddaf2e9
|
Added documentation and a quick note to self.
|
2016-12-15 19:43:04 -05:00 |
|
Thomas Harte
|
f61176cd7d
|
Reinstituted something of the don't-do-pixel-work-until-an-affecting-write-occurs optimisation.
|
2016-12-15 19:20:14 -05:00 |
|
Thomas Harte
|
c1c70a767a
|
Attempted fully to reinstate proper timing.
|
2016-12-15 18:52:16 -05:00 |
|
Thomas Harte
|
0326316bb8
|
Reinstated whole-frame counting. Thereby to reinstate proper interrupts.
|
2016-12-15 18:09:49 -05:00 |
|
Thomas Harte
|
b58b11fc93
|
Switched to a table-based dispatch of line-by-line actions, primarily to simplify.
|
2016-12-15 18:07:46 -05:00 |
|
Thomas Harte
|
fd541e1142
|
An early draft; dealing with the issue that not all cycles are necessarily consumed in a single call. Incomplete; broken. Committing for cross-machine visibility.
|
2016-12-12 08:01:10 -05:00 |
|
Thomas Harte
|
be7e05e109
|
Started attempting to move total responsibility for display-related interrupts and RAM timing into the video.
|
2016-12-11 18:34:49 -05:00 |
|
Thomas Harte
|
c5cf8d9531
|
Ensured the video subsystem correctly handles requests to run over a frame boundary.
|
2016-12-11 16:17:51 -05:00 |
|
Thomas Harte
|
52028432e1
|
Restored some semblance of output.
|
2016-12-10 22:19:10 -05:00 |
|
Thomas Harte
|
0aae1bd1ef
|
Fixed calculation of termination cycle.
|
2016-12-10 21:35:41 -05:00 |
|
Thomas Harte
|
c43e481a33
|
Started factoring video out of the Electron.
|
2016-12-10 21:07:52 -05:00 |
|
Thomas Harte
|
e62be03673
|
Removed endianness assumption.
|
2016-12-10 19:10:33 -05:00 |
|
Thomas Harte
|
a5683dfb21
|
Removed now untrue comment.
|
2016-12-10 15:19:48 -05:00 |
|
Thomas Harte
|
0e71802b92
|
Reduced Oric video to single nibble constants. Removed attempt at asynchronous flush as no longer required.
|
2016-12-10 14:17:46 -05:00 |
|
Thomas Harte
|
580f347727
|
Fixed Oric SCART mode by having it change what it's giving to the CRT based on which shader it knows will be active.
|
2016-12-10 13:55:56 -05:00 |
|
Thomas Harte
|
a549fd1ecc
|
Introduced the ability simply to piggy-back off the CRT's natural phase for the colour burst, thereby eliminating a couple of redundant independent attempts in the Oric and Electron.
|
2016-12-10 13:42:34 -05:00 |
|
Thomas Harte
|
6cdd41e5a9
|
Added direct use of the colour ROM, uploading 16 bits per pixel to contain the entire ROM composite wave.
|
2016-12-09 22:17:10 -05:00 |
|
Thomas Harte
|
3b5962b171
|
This is an initial attempt at using the actual Oric colour ROM values for composite video generation.
|
2016-12-09 20:01:27 -05:00 |
|
Thomas Harte
|
c304db0f5a
|
Deintegrated the busy flag and the interrupt request line, as the latter is reset by status reads. Which also means I can start reporting the WD INTRQ line status directly from the Microdisc. That appears to be correct, rather than honouring the Microdisc IRQ select there.
|
2016-12-06 21:16:29 -05:00 |
|
Thomas Harte
|
ebb62a2d78
|
Switched the 2600 to postfix and non-camel-case instance variable names.
|
2016-12-03 14:07:38 -05:00 |
|
Thomas Harte
|
b81c058c0a
|
Factored out the Atari 2600's 6532 connection, as a low-hanging fruit.
|
2016-12-03 13:41:55 -05:00 |
|
Thomas Harte
|
3361d6b93a
|
Factored out the Atari 2600 speaker and adjusted it to postfix underscores.
|
2016-12-03 13:39:46 -05:00 |
|
Thomas Harte
|
1b1a8d3e52
|
Brought the Vic-20 into suffix naming.
|
2016-12-03 13:30:27 -05:00 |
|
Thomas Harte
|
063a62372f
|
The Commodore serial bus and C1540 are now postfix underscorers.
|
2016-12-03 13:14:03 -05:00 |
|
Thomas Harte
|
eb3a1fbfb7
|
Commuted remaining Electron underscores. It would be nice also to factor out the video, but the time hasn't come yet.
|
2016-12-03 13:01:01 -05:00 |
|
Thomas Harte
|
4fac538a57
|
Factored out the Electron's speaker and adjusted instance variable naming.
|
2016-12-03 12:41:02 -05:00 |
|
Thomas Harte
|
d1d93829cf
|
Factored out the Tape and switched it to postfix underscores.
|
2016-12-03 12:18:08 -05:00 |
|
Thomas Harte
|
2003b514aa
|
Switched the typer to postfix underscores.
|
2016-12-03 10:55:50 -05:00 |
|
Thomas Harte
|
81ee834530
|
As well as a bunch of logging, reinstated rotation position preservation across tracks.
|
2016-12-02 18:36:47 -05:00 |
|
Thomas Harte
|
93c573bfa9
|
Implemented missing status bits (other than the index hole), and a head loading delay for the Microdisc.
|
2016-12-01 21:13:16 -05:00 |
|
Thomas Harte
|
442986ee2c
|
Introduced a head loading path for 1793 machines.
|
2016-12-01 20:12:22 -05:00 |
|
Thomas Harte
|
82899f2f47
|
Ensured flag setting is atomic, removed duplication of interrupt request versus busy, found better names for the personality testers, unified delegate protocol.
|
2016-12-01 07:41:52 -05:00 |
|
Thomas Harte
|
9b6c5e814a
|
Now that it can be more explicit, this should admit that it's '93-based, not '73.
|
2016-11-28 16:22:35 -05:00 |
|
Thomas Harte
|
2f459690d4
|
It would appear the 1770 and 1773 actually differ in relation to the (non-sensical) ability not to spin-up for a Type 2, and whether a side compare can occur. So the WD1770 class now requires a personality to be specified. Which it singly fails to honour.
|
2016-11-26 23:29:30 +08:00 |
|
Thomas Harte
|
e9d6566e9c
|
Of course, changing the IRQ enable may immediately change the IRQ line. Signal if so.
|
2016-11-26 09:35:44 +08:00 |
|
Thomas Harte
|
73d30b9c00
|
Corrected typo.
|
2016-11-25 21:30:45 +08:00 |
|
Thomas Harte
|
12956901d6
|
Filled in some register mirrors.
|
2016-11-25 21:28:11 +08:00 |
|
Thomas Harte
|
54246c8f1a
|
Interrupt enabling works the other way around I think, and both registers with only one bit defined should probably return '1' in all other places?
|
2016-11-25 21:24:59 +08:00 |
|
Thomas Harte
|
8be81f6ebd
|
Supplied disks are given to the Microdisc.
|
2016-11-25 20:53:38 +08:00 |
|
Thomas Harte
|
4af678d2ed
|
Gave the Microdisc a clock signal, added just enough of force interrupt to avoid a spurious belief that a type 3 command has started.
|
2016-11-25 20:51:39 +08:00 |
|
Thomas Harte
|
5c019ad1c0
|
Okay, so it looks like both ROM paging flags are the opposite of what I previously had.
|
2016-11-25 20:42:40 +08:00 |
|
Thomas Harte
|
5be45c6c50
|
Ensured proper default behaviour.
|
2016-11-25 20:30:27 +08:00 |
|
Thomas Harte
|
d33f3b9224
|
This is the broad strokes effort at enabling Microdisc emulation.
|
2016-11-25 20:15:48 +08:00 |
|
Thomas Harte
|
7c2d9f3752
|
This seems to be right, per http://wiki.defence-force.org/doku.php?id=oric:hardware:floppy_disk_controller_wd1793
|
2016-11-22 22:35:43 +08:00 |
|
Thomas Harte
|
5ebc1c63ff
|
Switched video to postfix underscores, for consistency.
|
2016-11-22 22:28:45 +08:00 |
|
Thomas Harte
|
707763f80b
|
Added Microdisc storage to the Oric class, switching all instance storage to postfix underscore while I'm here.
|
2016-11-22 22:22:00 +08:00 |
|
Thomas Harte
|
0c3644f350
|
Made a second parse at logic. We'll see.
|
2016-11-22 22:12:32 +08:00 |
|
Thomas Harte
|
03843bf934
|
Unified delegates. Let's keep it easy for the caller.
|
2016-11-22 22:11:11 +08:00 |
|
Thomas Harte
|
13a608a8c2
|
Added what may be correct paging logic.
|
2016-11-22 22:09:52 +08:00 |
|
Thomas Harte
|
363db695e8
|
Started implementation of the Microdisc selection logic.
|
2016-11-22 08:12:53 +08:00 |
|
Thomas Harte
|
09f965e6a9
|
Fixed potential bug whereby inserting a disk into a drive that hadn't been lazily allocated yet but had already been selected wouldn't take effect.
|
2016-11-22 08:11:57 +08:00 |
|
Thomas Harte
|
ea33a28695
|
Any Oric-format disks that are inserted now make it all the way to the Oric, along with a request to emulate the Microdisc. It has received a copy of the ROM. The ball is entirely in its court now.
|
2016-11-21 20:59:25 +08:00 |
|
Thomas Harte
|
311f8c0b47
|
Restored audio.
|
2016-11-16 11:10:07 +08:00 |
|
Thomas Harte
|
8b40ae03ca
|
Extended analysis to spot IRQ and NMI vector changes, for titles that simply adjust those then exit. Ensured Oric emulator can type and load quickly on an Oric 1 just as well as on an Atmos.
|
2016-11-15 11:05:53 +08:00 |
|
Thomas Harte
|
e2cdfae8a7
|
The emulated Oric now has access to both versions of the BASIC ROM and picks between them based on the static analyser's recommendation.
|
2016-11-15 10:39:16 +08:00 |
|
Thomas Harte
|
9c550c594a
|
Moved audio work back into its own thread, but this time it queues up an all happens only upon a flush. Hopefully to resolve synchronisation cost concerns.
|
2016-11-09 21:17:50 -05:00 |
|
Thomas Harte
|
64827931bf
|
Switched the Oric implementation simply to rely upon the Storage-level tape parser. So now there's only one, authoritative one of those.
|
2016-11-07 21:57:58 -05:00 |
|
Thomas Harte
|
45b169f341
|
Made a few mapping fixes, clarified where the default reset code lives, ensured the Oric and Vic clear their keys when the typer ends.
|
2016-11-05 15:28:03 -04:00 |
|
Thomas Harte
|
338904fffe
|
Made similar cleanings of the Electron and Vic.
|
2016-11-05 15:07:57 -04:00 |
|
Thomas Harte
|
9fb9d92437
|
Made the typer much more able to help out, and thereby tidied and separated the Oric's typer.
|
2016-11-05 14:47:09 -04:00 |
|
Thomas Harte
|
626e719fab
|
Added sanity checks on loading quickly.
|
2016-11-03 22:50:49 -04:00 |
|
Thomas Harte
|
a7e4c0c3b5
|
Switched to a ROM trap for typing.
|
2016-11-03 22:21:05 -04:00 |
|
Thomas Harte
|
8c70dc5891
|
Implemented typer for the Oric, and I'm starting to think the code is a bit too repetitious. Refactoring will be forthcoming. Added CLOAD"" as the loading command for all Oric software.
|
2016-11-03 22:14:40 -04:00 |
|
Thomas Harte
|
9c2df231ce
|
Made fast loading optional.
|
2016-11-03 07:59:30 -04:00 |
|
Thomas Harte
|
e9f1a6a79d
|
This appears to be it. The secret? Don't worry about the stop bits. They're just processing time. Latch onto the next start.
|
2016-11-03 07:34:48 -04:00 |
|
Thomas Harte
|
827a919368
|
This is an initial attempt at reading actual tape data. It loses sync though.
|
2016-11-02 22:30:53 -04:00 |
|