Thomas Harte
|
d7954a4cb1
|
Tweaks timing a little.
|
2021-04-15 21:51:49 -04:00 |
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Thomas Harte
|
ef636da866
|
Attempts 48/128kb floating bus behaviour.
|
2021-04-15 21:19:21 -04:00 |
|
Thomas Harte
|
fa18b06dbf
|
Correct get_floating_value to be consistent in out-of-bounds behaviour.
|
2021-04-15 21:13:36 -04:00 |
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Thomas Harte
|
349b9ce502
|
Don't post contended accesses other than on the +2a/+3.
Those machines have an actual latch for this stuff, the others don't.
|
2021-04-15 21:13:06 -04:00 |
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Thomas Harte
|
71cf63bd35
|
Corrects internal cycle contention.
|
2021-04-15 19:17:11 -04:00 |
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Thomas Harte
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d1bb3aada4
|
Attempts to complete the in-machine application of contention.
|
2021-04-15 18:57:34 -04:00 |
|
Thomas Harte
|
b4214c6e08
|
Blocks off the AY from inputs in 48kb mode.
|
2021-04-15 18:04:16 -04:00 |
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Thomas Harte
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f5c7746493
|
Extends fast loading support to the just-introduced models.
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2021-04-15 17:31:42 -04:00 |
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Thomas Harte
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f10ec80153
|
Gets started on different video timings.
|
2021-04-14 22:23:27 -04:00 |
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Thomas Harte
|
0af405aa46
|
Starts working in the 48kb and 128kb Spectrums.
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2021-04-14 21:37:10 -04:00 |
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Thomas Harte
|
60e8273de2
|
Tweaks video timing, again.
|
2021-04-06 21:04:54 -04:00 |
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Thomas Harte
|
dd28246f9f
|
Better indicate interrupt timing.
|
2021-04-06 12:06:13 -04:00 |
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Thomas Harte
|
fd88071c0a
|
Remove further detritus.
|
2021-04-05 17:21:26 -04:00 |
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Thomas Harte
|
16bfe1a55c
|
Resolves use-after-return memory error.
|
2021-04-04 22:45:56 -04:00 |
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Thomas Harte
|
90c3d6a1e8
|
Attempts a later interception of tape loading.
|
2021-04-04 22:39:30 -04:00 |
|
Thomas Harte
|
f26bf4b9e4
|
Splitting here isn't achieving anything.
|
2021-04-04 19:52:38 -04:00 |
|
Thomas Harte
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1da51bee6c
|
14368 and six seem to be the proper numbers, per my comprehension of Patrick Rak.
|
2021-04-04 19:52:19 -04:00 |
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Thomas Harte
|
5a66956221
|
Merge branch 'master' into SpeccyTiming
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2021-04-04 19:12:37 -04:00 |
|
Thomas Harte
|
d77ddaf4fa
|
Switches the Electron to JustInTimeActor video.
Also reorders template parameters; I think that specifying a different time base is likely to be more common than using a divider.
|
2021-04-04 17:33:49 -04:00 |
|
Thomas Harte
|
afb4e6d37d
|
Merge branch 'master' into JITSleeper
|
2021-04-04 15:37:19 -04:00 |
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Thomas Harte
|
14663bd06b
|
I think 3 is what I'm aiming for here.
But this probably isn't correct for IO cycles.
|
2021-04-02 07:36:57 -04:00 |
|
Thomas Harte
|
044ac949ba
|
Rearrange fields.
|
2021-04-01 12:44:00 -04:00 |
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Thomas Harte
|
87317f5673
|
Improve documentation, pin down read/write times.
|
2021-04-01 12:38:58 -04:00 |
|
Thomas Harte
|
687c05365e
|
Flushes before set_last_contended_area_access.
|
2021-03-31 22:52:41 -04:00 |
|
Thomas Harte
|
4f80523828
|
Tweaks contended timing.
|
2021-03-31 22:51:20 -04:00 |
|
Thomas Harte
|
acdbd88b9e
|
Merge pull request #896 from TomHarte/FastLoadUponInsert
Ensure CPC and Spectrum update fast-tape flag upon media insertion.
|
2021-03-28 11:44:01 -04:00 |
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Thomas Harte
|
729edeac6c
|
Ensure CPC and Spectrum update fast-tape flag upon media insertion.
|
2021-03-27 18:08:46 -04:00 |
|
Thomas Harte
|
faaa4961ed
|
Attempts to rely on JustInTimeActor's built-in ClockingHint::Observer.
|
2021-03-26 23:54:08 -04:00 |
|
Thomas Harte
|
8a11a5832c
|
Uses GI::AY38910::Utility far and wide.
|
2021-03-26 23:19:47 -04:00 |
|
Thomas Harte
|
465ecc4a78
|
Attempts to implement proper floating bus behaviour.
As per http://sky.relative-path.com/zx/floating_bus.html
|
2021-03-24 20:23:33 -04:00 |
|
Thomas Harte
|
0ac11fc39e
|
Add floating bus.
|
2021-03-23 17:09:42 -04:00 |
|
Thomas Harte
|
3d0503a35e
|
Adds a genuine Spectrum mapping, tweaks timing.
|
2021-03-23 16:59:43 -04:00 |
|
Thomas Harte
|
496a294c71
|
Adds clocking observers for the tape and FDC.
|
2021-03-23 16:38:04 -04:00 |
|
Thomas Harte
|
465c74ab86
|
Adds the Spectrum side of typing.
The character mapper itself needs some Spectrum logic.
|
2021-03-23 10:44:43 -04:00 |
|
Thomas Harte
|
4e8f82a39c
|
Adds ZX Spectrum activity indicators.
|
2021-03-23 10:32:22 -04:00 |
|
Thomas Harte
|
d0776b58cf
|
Tweaks timing empirically.
|
2021-03-22 23:20:49 -04:00 |
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Thomas Harte
|
6da099d7e1
|
Ensures the enter key is cleared before fast-loading tapes have loaded.
|
2021-03-22 22:42:10 -04:00 |
|
Thomas Harte
|
60e77785e8
|
Makes an attempt to provide the necessary hook for floating bus behaviour.
|
2021-03-22 22:34:28 -04:00 |
|
Thomas Harte
|
19cd6a55d3
|
Rejigs the way video is counted to orient it around fetch times.
|
2021-03-22 22:18:38 -04:00 |
|
Thomas Harte
|
08432dd94b
|
Adds automatic media starts.
|
2021-03-22 20:12:03 -04:00 |
|
Thomas Harte
|
3c1131a84b
|
Attempts to implement the +3.
|
2021-03-22 19:36:05 -04:00 |
|
Thomas Harte
|
3ef2715eee
|
Implements the ROM version of fast loading.
|
2021-03-22 19:04:38 -04:00 |
|
Thomas Harte
|
4a12d7086d
|
Makes another guess at total colour phase.
|
2021-03-22 17:24:38 -04:00 |
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Thomas Harte
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a6b75b8637
|
Attempts improvements to video fetch timing. Alas, a lot of guess work here.
|
2021-03-22 15:59:03 -04:00 |
|
Thomas Harte
|
bdb3bce8d6
|
Corrects semantics on contended-timing calculation.
|
2021-03-22 15:48:51 -04:00 |
|
Thomas Harte
|
a26716919c
|
Switches to an is-in-video test that allows for video memory being paged twice.
This is trivially possible even in plain 128kb mode.
|
2021-03-22 15:46:02 -04:00 |
|
Thomas Harte
|
8dbc7649aa
|
Adds note-to-self re: FDC.
|
2021-03-22 09:15:00 -04:00 |
|
Thomas Harte
|
42a9dc7c2b
|
Minimises video flushing, moves it to the proper time.
|
2021-03-22 09:02:49 -04:00 |
|
Thomas Harte
|
7965772745
|
Moves contention delays up to the time of MREQ going active.
|
2021-03-21 23:04:20 -04:00 |
|
Thomas Harte
|
f37f89a7d3
|
Merge branch 'master' into ZXSpectrum
|
2021-03-21 22:44:37 -04:00 |
|
Thomas Harte
|
7562917740
|
Adds the Spectrum to the macOS New... menu.
|
2021-03-21 21:50:50 -04:00 |
|
Thomas Harte
|
3925eee575
|
Attempts more relaxed decoding of AY accesses.
|
2021-03-21 21:03:35 -04:00 |
|
Thomas Harte
|
6482303063
|
Reduces code duplication slightly.
|
2021-03-21 20:34:58 -04:00 |
|
Thomas Harte
|
9ce1dbaebb
|
Switches to partial decoding for paging registers; permits video address changes after paging is locked.
|
2021-03-21 20:23:00 -04:00 |
|
Thomas Harte
|
064667c0c3
|
Corrects asymmetrical flash, ensures consistent burst phase.
|
2021-03-21 20:22:27 -04:00 |
|
Thomas Harte
|
58be770eaa
|
Factors out some boilerplate.
When I'm confident this is correct, I can fix up the other call sites.
|
2021-03-21 00:14:48 -04:00 |
|
Thomas Harte
|
1b0f45649e
|
Improves contended timing.
Still not quite on the money, but this was an overt bug.
|
2021-03-21 00:00:18 -04:00 |
|
Thomas Harte
|
42bfabbe8c
|
The implication seems to be of a fixed phase swing.
I'm enquiring further.
|
2021-03-20 23:46:13 -04:00 |
|
Thomas Harte
|
07a63d62dd
|
Adds some quick arithmetic on the clock speed.
|
2021-03-20 11:19:44 -04:00 |
|
Thomas Harte
|
26911a16e8
|
Lengthens sync, better to conform to PAL; experiments with fixed-phase colour burst.
I need to get hold of real documentation here.
|
2021-03-20 10:38:21 -04:00 |
|
Thomas Harte
|
cf9a5d595b
|
Completes piping of audio.
|
2021-03-19 23:33:46 -04:00 |
|
Thomas Harte
|
7729f1f3d0
|
Attempts automatic Spectrum tape control.
|
2021-03-19 22:43:48 -04:00 |
|
Thomas Harte
|
7d59ff6d8f
|
Builds in a colour burst, producing colour composite.
|
2021-03-19 22:25:37 -04:00 |
|
Thomas Harte
|
2ee478b4c4
|
Goes some way towards wiring up Spectrum options.
|
2021-03-19 22:17:20 -04:00 |
|
Thomas Harte
|
bb0d35e3d0
|
Minor formatting/layout fixes.
|
2021-03-19 22:17:03 -04:00 |
|
Thomas Harte
|
a482ce1546
|
Adds a tape player.
|
2021-03-19 11:12:50 -04:00 |
|
Thomas Harte
|
a35e1f4fbe
|
Starts to make formal Spectrum accommodations.
|
2021-03-19 11:06:09 -04:00 |
|
Thomas Harte
|
2371048ad1
|
Formally separates keyboard code.
With an eye to formalising the Spectrum/ZX81/ZX80 differences.
|
2021-03-19 10:36:08 -04:00 |
|
Thomas Harte
|
93b9ea67e6
|
Takes a run at contended timings.
|
2021-03-19 08:49:56 -04:00 |
|
Thomas Harte
|
f8c9ef2950
|
Add necessary header for memset.
|
2021-03-19 00:00:59 -04:00 |
|
Thomas Harte
|
87fac15cc4
|
This is going to remain purely a template; no .cpp.
|
2021-03-18 23:51:45 -04:00 |
|
Thomas Harte
|
2d51924a3c
|
Wires up Spectrum keyboard.
The machine now appears to be fully interactive and functional. Timing and media aside, that is.
|
2021-03-18 23:51:21 -04:00 |
|
Thomas Harte
|
c3d96b30d7
|
Factors out a little of the ZX81's keyboard logic.
|
2021-03-18 23:45:57 -04:00 |
|
Thomas Harte
|
44240773ef
|
Corrects address generation, ink/paper selection.
Seemingly to give a correct +2a boot. Time to add a keyboard and find out, I guess.
|
2021-03-18 23:30:48 -04:00 |
|
Thomas Harte
|
ed587a4db5
|
Provides a better no-port-here value.
|
2021-03-18 23:14:39 -04:00 |
|
Thomas Harte
|
020a04006e
|
Adds flashing, randomises initial RAM contents.
|
2021-03-18 23:07:51 -04:00 |
|
Thomas Harte
|
622a8abf7f
|
Takes a stab at pixel output.
|
2021-03-18 22:57:10 -04:00 |
|
Thomas Harte
|
871bac6c8a
|
Marks out and approximately centres a pixel region.
|
2021-03-18 22:41:20 -04:00 |
|
Thomas Harte
|
fe3e8f87e7
|
Takes a shot at an all-border output.
|
2021-03-18 22:29:24 -04:00 |
|
Thomas Harte
|
87fc7c02e8
|
Provides a base pointer for video output.
|
2021-03-18 22:04:41 -04:00 |
|
Thomas Harte
|
f2620e6afb
|
Adds a CRT. Not yet clocked.
|
2021-03-18 21:54:42 -04:00 |
|
Thomas Harte
|
ab2ad70885
|
Takes a run at interrupts.
|
2021-03-18 21:29:52 -04:00 |
|
Thomas Harte
|
135134acfd
|
Adds a shell for video emulation.
|
2021-03-18 12:47:48 -04:00 |
|
Thomas Harte
|
5664e81d48
|
It appears the +2a and +3 have a different clock rate.
|
2021-03-18 12:41:24 -04:00 |
|
Thomas Harte
|
c353923557
|
This can be constexpr.
|
2021-03-18 12:40:59 -04:00 |
|
Thomas Harte
|
b830d62850
|
Adds quick notes on port FE.
|
2021-03-18 12:32:54 -04:00 |
|
Thomas Harte
|
17f551e89d
|
Attempts a full audio wiring.
|
2021-03-18 12:23:54 -04:00 |
|
Thomas Harte
|
4a4da90d56
|
Implements some of the memory map, and instantiates audio objects.
|
2021-03-18 12:14:48 -04:00 |
|
Thomas Harte
|
404c1f06e6
|
Insert missing space.
|
2021-03-18 10:44:01 -04:00 |
|
Thomas Harte
|
730bfcd1fd
|
Stumbles towards a memory map.
|
2021-03-18 10:43:51 -04:00 |
|
Thomas Harte
|
97249b0edd
|
Slow walks further towards a functioning Spectrum.
|
2021-03-18 10:18:17 -04:00 |
|
Thomas Harte
|
5a1bda1d82
|
Performs boilerplate towards a ZX Spectrum class.
|
2021-03-17 23:38:55 -04:00 |
|
Thomas Harte
|
9bec91c2b9
|
Correct further namespace references.
|
2021-03-17 22:56:03 -04:00 |
|
Thomas Harte
|
3d1775d853
|
Correct namespace.
|
2021-03-17 22:52:23 -04:00 |
|
Thomas Harte
|
814c057570
|
Update further path references.
|
2021-03-17 22:46:25 -04:00 |
|
Thomas Harte
|
b63ca16ce2
|
Attempts to hatch a Sinclair namespace.
|
2021-03-17 22:40:29 -04:00 |
|