Thomas Harte
|
8361756dc4
|
Switched definitively to the works-for-now approach of requiring an explicit opt-in where somebody wants to clock a whole-cycle receiver from a half-cycle clock.
|
2017-07-27 07:40:02 -04:00 |
|
Thomas Harte
|
cda223ffc0
|
Added explicit signedness cast.
|
2017-07-25 22:49:03 -04:00 |
|
Thomas Harte
|
279c369a1f
|
Switched to Cycles as the result from the 6502 perform_bus_operation, helping slightly to clarify what you're intended to return and reducing type jumping within the 6502 implementation.
|
2017-07-25 22:21:09 -04:00 |
|
Thomas Harte
|
296c7cec05
|
Adopted flush widely.
|
2017-07-25 20:42:51 -04:00 |
|
Thomas Harte
|
75d67ee770
|
Relocated ClockReceiver.hpp as it's a dependency for parts of the static analyser, and therefore needs to be distinct from the actual emulation parts.
|
2017-07-25 20:20:55 -04:00 |
|
Thomas Harte
|
a1e9a54765
|
Eliminated redundant uses of ClockReceiver and sought to ensure that proper run_fors are inherited all the way down.
|
2017-07-25 20:09:13 -04:00 |
|
Thomas Harte
|
8d1dacd951
|
Clean ups along the Electron::Tape line: ensured that the ClockReceiver is opted into only once, and that its run_for propagates all the way along the chain.
|
2017-07-25 20:01:30 -04:00 |
|
Thomas Harte
|
40339a12e1
|
Formalised the use of a cycles count with a divider, bringing a few additional plain-int users into the fold.
|
2017-07-25 07:15:31 -04:00 |
|
Thomas Harte
|
90bf6565d0
|
Reduced int/Cycle conversions in the Electron and on the Atari 2600, where the current framework makes it possible to do so.
|
2017-07-24 22:53:13 -04:00 |
|
Thomas Harte
|
a6e377aa57
|
The Electron's video is now a ClockReceiver.
|
2017-07-24 22:36:42 -04:00 |
|
Thomas Harte
|
915f587ef1
|
Updated the Electron's tape class to be a ClockReceiver.
|
2017-07-24 21:36:30 -04:00 |
|
Thomas Harte
|
b7f88e8f61
|
Filter is now a ClockReciever, affecting all sound output devices.
|
2017-07-24 21:29:13 -04:00 |
|
Thomas Harte
|
8a2bdb8d22
|
Converted the TimedEventLoop and the things that sit atop it into ClockReceivers.
|
2017-07-24 21:19:05 -04:00 |
|
Thomas Harte
|
2ff157cf7a
|
Switched CRTMachine over to use Cycles as an explicit statement of units, and followed through on the effects of that.
|
2017-07-22 22:17:29 -04:00 |
|
Thomas Harte
|
83628b285b
|
Experimentally turned the 6502 into a clock receiver. No problem encountered.
|
2017-07-22 21:52:21 -04:00 |
|
Thomas Harte
|
dddb30477b
|
Used a different inner-loop variable, for clarity.
|
2017-07-21 21:52:08 -04:00 |
|
Thomas Harte
|
3f609e17b3
|
Factored out the table-lookup approach to being a typer, and adjusted so as definitely to limit myself to positive offset table lookups.
|
2017-07-21 21:18:51 -04:00 |
|
Thomas Harte
|
b3861ff755
|
Reduced copying of Pulses.
|
2017-07-16 19:49:31 -04:00 |
|
Thomas Harte
|
1d3ae31755
|
Abstracted the concept of an Acorn shifter away from being a PLLParser. The Acorn tape parser now skips using that class and uses the shifter. The actual Electron also uses the shifter. So the two are completely aligned. Net result: the Electron should successfully load exactly when static analysis was successful.
|
2017-07-16 19:24:01 -04:00 |
|
Thomas Harte
|
481487f084
|
Oh yuck, it looks like I've repeated this same test in two different places. Must figure out where to factor it out to. But in the meantime, the emulated Electron has just loaded its first CSW.
|
2017-07-13 22:39:30 -04:00 |
|
Thomas Harte
|
353c854734
|
Removed a TODO that is no longer appropriate.
|
2017-07-09 22:06:50 -04:00 |
|
Thomas Harte
|
eb8a2de5d6
|
Settled definitively on flush as more communicative than synchronise (and slightly more locale neutral); culled some more duplication from the Z80.
|
2017-05-15 07:38:59 -04:00 |
|
Thomas Harte
|
0808e9b6fb
|
Pulled the 6502 into a CPU namespace, making it an instance of something that has micro-opcodes and schedules them, and factoring out the formulation of a register pair.
|
2017-05-14 22:08:15 -04:00 |
|
Thomas Harte
|
e01f3f06c8
|
Completed curly bracket movement.
|
2017-03-26 14:34:47 -04:00 |
|
Thomas Harte
|
aff69dbc34
|
Resolved spurious static analyser issue; screen mode will always be 0–6 but it doesn't know that. Setting a non-zero divider doesn't feel worth worrying about for a cleaner compile.
|
2017-02-11 13:35:22 -05:00 |
|
Thomas Harte
|
f3d9aec8fc
|
Fixed Electron's support for automatically booting floppy disks.
|
2017-01-08 14:47:41 -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
|
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
|
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
|
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
|
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
|
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
|
311f8c0b47
|
Restored audio.
|
2016-11-16 11:10:07 +08:00 |
|
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
|
7843a244b0
|
Ensured emulation doesn't enter an infinite loop if the user attempts to read beyond the end of a tape.
|
2016-10-28 22:23:25 -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
|
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
|
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
|
ee8510984f
|
Added just enough wiring to restore the 2600 to functionality.
|
2016-09-15 19:34:45 -04:00 |
|
Thomas Harte
|
8c84f3581a
|
Attempted to bring some uniformity in application of configurations.
|
2016-09-08 05:32:17 -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
|
c0402d0c2b
|
Gave tapes their own namespace.
|
2016-08-27 17:09:45 -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
|
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
|
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
|
88964ceac0
|
Eliminated plain pointer passing for object types.
|
2016-07-04 19:33:55 -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
|
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
|
2bd71e7e9b
|
.reset is the more normal way to reassign a unique_ptr.
|
2016-06-23 20:52:44 -04:00 |
|
Thomas Harte
|
b6dd38dad3
|
Corrected type safety warning.
|
2016-06-19 21:41:01 -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
|
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
|
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
|
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
|
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
|
9b64f64db7
|
Attempted to normalise some style decisions.`
|
2016-04-24 22:32:24 -04:00 |
|
Thomas Harte
|
d221c712b0
|
Ensured GL context is active when destructing CRTOpenGL.
|
2016-04-24 20:34:25 -04:00 |
|
Thomas Harte
|
ae2760e034
|
Colour phase is now updated and varies per line.
|
2016-04-21 21:07:29 -04:00 |
|
Thomas Harte
|
7aa87723a9
|
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.
|
2016-04-19 21:29:10 -04:00 |
|
Thomas Harte
|
66f2c10c04
|
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.
|
2016-04-19 21:00:48 -04:00 |
|
Thomas Harte
|
3d53f157de
|
Output selection now takes effect. So I can stop accidentally committing changes back and forth.
|
2016-04-18 08:27:58 -04:00 |
|
Thomas Harte
|
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.
|
2016-04-18 08:21:00 -04:00 |
|
Thomas Harte
|
499f7ace07
|
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.
|
2016-04-17 20:43:20 -04:00 |
|
Thomas Harte
|
6ff9ffba6c
|
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.
|
2016-04-17 15:51:28 -04:00 |
|
Thomas Harte
|
104f44f27f
|
Attempted to improve deinterlacing, gave the CRT full control over blend mode, switched back to 2000000Mhz audio.
|
2016-04-14 22:20:47 -04:00 |
|
Thomas Harte
|
6a17c2992d
|
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.
|
2016-04-13 22:31:59 -04:00 |
|
Thomas Harte
|
026ce0255f
|
Source runs are now captured, and that buffer appropriately reset.
|
2016-04-13 22:20:13 -04:00 |
|
Thomas Harte
|
2ea02ed127
|
A source array buffer is also now created, mapped, unmapped, etc.
|
2016-04-13 22:14:18 -04:00 |
|
Thomas Harte
|
955e185790
|
Minor simplification.
|
2016-04-13 19:19:04 -04:00 |
|
Thomas Harte
|
4d889d9c7f
|
Made an attempt slightly to simplify the fragment processor, at both ends.
|
2016-04-12 22:35:11 -04:00 |
|
Thomas Harte
|
2cc72169ff
|
Ensured machines can nominate their own aspect ratio windows. Switched to 11/10 for the Electron.
|
2016-04-11 23:12:56 -04:00 |
|
Thomas Harte
|
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.
|
2016-04-11 21:47:23 -04:00 |
|
Thomas Harte
|
a3c2cd880e
|
I discovered a further post on this on the STH forums; apparently the Electron simply asserts sync continuously. No breaks.
|
2016-04-11 21:01:09 -04:00 |
|
Thomas Harte
|
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.
|
2016-04-10 22:56:52 -04:00 |
|
Thomas Harte
|
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.
|
2016-04-10 21:34:40 -04:00 |
|
Thomas Harte
|
e617bd2bb3
|
Turned audio quality up to the maximum, at least for now.
|
2016-04-06 21:12:22 -04:00 |
|
Thomas Harte
|
5aa6da221f
|
Shifted responsibility for byte shifts, probably to a more logical place.
|
2016-04-05 22:19:14 -04:00 |
|
Thomas Harte
|
2248769df9
|
Pulled a bunch of selection parts outside of the loops. Probably exhausting this angle of attack.
|
2016-04-05 22:17:44 -04:00 |
|
Thomas Harte
|
8f87973a96
|
Switched to table-based byte to output conversion.
|
2016-04-05 22:07:10 -04:00 |
|
Thomas Harte
|
e35456612a
|
Simplified 40-column to pixel conversion.
|
2016-04-05 20:44:05 -04:00 |
|
Thomas Harte
|
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.
|
2016-04-05 20:32:55 -04:00 |
|
Thomas Harte
|
7838507a7a
|
Simplified sound generation.
|
2016-04-04 22:22:19 -04:00 |
|
Thomas Harte
|
729fddea1c
|
Switched to integer textures, likely to simplify for most use cases.
|
2016-04-04 19:39:01 -04:00 |
|
Thomas Harte
|
3ca58b2a57
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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1c4acfb599
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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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Thomas Harte
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4462bb92f8
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Moved interrupt back down to where it's probably meant to be.
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2016-03-12 23:18:46 -05:00 |
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Thomas Harte
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cdff90f20d
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Fixed: setting an interrupt control value with the lowest bit set could result in interrupts that can't be disabled.
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2016-03-12 22:55:33 -05:00 |
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Thomas Harte
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6327311130
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Made an attempt to separate and clarify on tape interrupts.
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2016-03-12 20:32:26 -05:00 |
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Thomas Harte
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cfa616d593
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Fixed: timing issue versus supplied test ROM was failure to include the Plus 1 ROM in the mix.
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2016-03-12 11:51:20 -05:00 |
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Thomas Harte
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763d5e8819
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Access timing now appears to be exactly on the nail. Disabled automatic interrupt expiration again as I'm not persuaded it's correct for at least the RTC.
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2016-03-10 23:12:28 -05:00 |
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Thomas Harte
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e305fd9326
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Adjusted numbers, empirically.
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2016-03-10 22:40:18 -05:00 |
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Thomas Harte
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a89225987f
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Blank lines are back.
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2016-03-10 22:19:54 -05:00 |
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Thomas Harte
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b836d74e18
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Believing the previous implementation to be overly complicated through premature optimisation, simplified video. It's slightly slower now. Will need work. Immediately to do: figure out how to deal with blank scan lines.
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2016-03-10 22:08:50 -05:00 |
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Thomas Harte
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20ac630e4d
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Some minor optimisations and timing tweaks. Nothing of substance.
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2016-03-10 19:58:50 -05:00 |
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Thomas Harte
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df3fff51c7
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These interrupts apparently last only 64µs at most.
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2016-03-10 19:10:53 -05:00 |
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Thomas Harte
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f232a12fad
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Fixed RAM timings: it's at least two and possibly three cycles to access RAM, and an access that overlaps with video fetch in Modes 0–3 will cost the length of the video fetch rather than somehow finishing in time.
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2016-03-10 19:04:43 -05:00 |
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Thomas Harte
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c7976dd657
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Started trying to clean up my Outputs namespace by moving stuff related to the CRT underneath a separate subnamespace.
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2016-03-08 20:49:07 -05:00 |
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Thomas Harte
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6dfe877c43
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Basic attempts to organise myself into shape for composite output continue.
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2016-03-07 21:22:47 -05:00 |
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Thomas Harte
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1e5fe2b2c1
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Made an attempt to reestablish the Atari 2600 output connection despite various changes (TODO: generalise that stuff), and to start creating the composite shader.
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2016-03-07 21:04:04 -05:00 |
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Thomas Harte
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cd9c62acca
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Still stepping slowly towards a working composite mode, switched the RGB sampling function to returning a vec4, which may be of benefit to any machine with a brightness part of an RGB signal, and started edging towards at least having the correct GLSL programs ready for converting composite output.
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2016-03-07 19:08:26 -05:00 |
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