Thomas Harte
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0ebd900e40
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Baby steps: apply Z80 state.
As far as it currently is. Since SNA is leaving the PC at the default of 0x0000, this currently has no visible effect.
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2021-04-25 13:03:24 -04:00 |
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Thomas Harte
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cc78bfb229
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Forwards most of the Z80 state.
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2021-04-25 13:00:43 -04:00 |
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Thomas Harte
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9baa861742
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Simplifies timing calculation expression.
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2021-04-21 19:18:07 -04:00 |
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Thomas Harte
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9293bcbc88
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Exclude the ROM from contention on 48kb and 128kb models.
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2021-04-21 18:49:18 -04:00 |
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Thomas Harte
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7bac18bd65
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Address bus load time is not + 1/2.
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2021-04-18 18:41:24 -04:00 |
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Thomas Harte
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80d4846a27
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Respond with 0xff during an interrupt acknowledge.
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2021-04-18 11:56:00 -04:00 |
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Thomas Harte
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7fdb1d848b
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Corrects Spectrum 128kb partial decoding.
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2021-04-16 21:54:52 -04:00 |
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Thomas Harte
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ef636da866
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Attempts 48/128kb floating bus behaviour.
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2021-04-15 21:19:21 -04:00 |
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Thomas Harte
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349b9ce502
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Don't post contended accesses other than on the +2a/+3.
Those machines have an actual latch for this stuff, the others don't.
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2021-04-15 21:13:06 -04:00 |
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Thomas Harte
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71cf63bd35
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Corrects internal cycle contention.
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2021-04-15 19:17:11 -04:00 |
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Thomas Harte
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d1bb3aada4
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Attempts to complete the in-machine application of contention.
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2021-04-15 18:57:34 -04:00 |
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Thomas Harte
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b4214c6e08
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Blocks off the AY from inputs in 48kb mode.
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2021-04-15 18:04:16 -04:00 |
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Thomas Harte
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f5c7746493
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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
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Gets started on different video timings.
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2021-04-14 22:23:27 -04:00 |
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Thomas Harte
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0af405aa46
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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
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dd28246f9f
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Better indicate interrupt timing.
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2021-04-06 12:06:13 -04:00 |
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Thomas Harte
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fd88071c0a
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Remove further detritus.
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2021-04-05 17:21:26 -04:00 |
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Thomas Harte
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90c3d6a1e8
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Attempts a later interception of tape loading.
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2021-04-04 22:39:30 -04:00 |
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Thomas Harte
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f26bf4b9e4
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Splitting here isn't achieving anything.
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2021-04-04 19:52:38 -04:00 |
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Thomas Harte
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5a66956221
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Merge branch 'master' into SpeccyTiming
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2021-04-04 19:12:37 -04:00 |
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Thomas Harte
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d77ddaf4fa
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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.
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2021-04-04 17:33:49 -04:00 |
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Thomas Harte
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afb4e6d37d
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Merge branch 'master' into JITSleeper
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2021-04-04 15:37:19 -04:00 |
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Thomas Harte
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14663bd06b
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I think 3 is what I'm aiming for here.
But this probably isn't correct for IO cycles.
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2021-04-02 07:36:57 -04:00 |
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Thomas Harte
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87317f5673
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Improve documentation, pin down read/write times.
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2021-04-01 12:38:58 -04:00 |
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Thomas Harte
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687c05365e
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Flushes before set_last_contended_area_access.
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2021-03-31 22:52:41 -04:00 |
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Thomas Harte
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acdbd88b9e
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Merge pull request #896 from TomHarte/FastLoadUponInsert
Ensure CPC and Spectrum update fast-tape flag upon media insertion.
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2021-03-28 11:44:01 -04:00 |
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Thomas Harte
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729edeac6c
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Ensure CPC and Spectrum update fast-tape flag upon media insertion.
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2021-03-27 18:08:46 -04:00 |
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Thomas Harte
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faaa4961ed
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Attempts to rely on JustInTimeActor's built-in ClockingHint::Observer.
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2021-03-26 23:54:08 -04:00 |
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Thomas Harte
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8a11a5832c
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Uses GI::AY38910::Utility far and wide.
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2021-03-26 23:19:47 -04:00 |
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Thomas Harte
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465ecc4a78
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Attempts to implement proper floating bus behaviour.
As per http://sky.relative-path.com/zx/floating_bus.html
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2021-03-24 20:23:33 -04:00 |
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Thomas Harte
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0ac11fc39e
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Add floating bus.
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2021-03-23 17:09:42 -04:00 |
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Thomas Harte
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3d0503a35e
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Adds a genuine Spectrum mapping, tweaks timing.
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2021-03-23 16:59:43 -04:00 |
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Thomas Harte
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496a294c71
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Adds clocking observers for the tape and FDC.
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2021-03-23 16:38:04 -04:00 |
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Thomas Harte
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465c74ab86
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Adds the Spectrum side of typing.
The character mapper itself needs some Spectrum logic.
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2021-03-23 10:44:43 -04:00 |
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Thomas Harte
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4e8f82a39c
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Adds ZX Spectrum activity indicators.
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2021-03-23 10:32:22 -04:00 |
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Thomas Harte
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6da099d7e1
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Ensures the enter key is cleared before fast-loading tapes have loaded.
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2021-03-22 22:42:10 -04:00 |
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Thomas Harte
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08432dd94b
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Adds automatic media starts.
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2021-03-22 20:12:03 -04:00 |
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Thomas Harte
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3c1131a84b
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Attempts to implement the +3.
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2021-03-22 19:36:05 -04:00 |
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Thomas Harte
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3ef2715eee
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Implements the ROM version of fast loading.
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2021-03-22 19:04:38 -04:00 |
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Thomas Harte
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a26716919c
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Switches to an is-in-video test that allows for video memory being paged twice.
This is trivially possible even in plain 128kb mode.
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2021-03-22 15:46:02 -04:00 |
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Thomas Harte
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8dbc7649aa
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Adds note-to-self re: FDC.
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2021-03-22 09:15:00 -04:00 |
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Thomas Harte
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42a9dc7c2b
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Minimises video flushing, moves it to the proper time.
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2021-03-22 09:02:49 -04:00 |
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Thomas Harte
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7965772745
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Moves contention delays up to the time of MREQ going active.
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2021-03-21 23:04:20 -04:00 |
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Thomas Harte
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7562917740
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Adds the Spectrum to the macOS New... menu.
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2021-03-21 21:50:50 -04:00 |
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Thomas Harte
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3925eee575
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Attempts more relaxed decoding of AY accesses.
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2021-03-21 21:03:35 -04:00 |
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Thomas Harte
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9ce1dbaebb
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Switches to partial decoding for paging registers; permits video address changes after paging is locked.
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2021-03-21 20:23:00 -04:00 |
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Thomas Harte
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58be770eaa
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Factors out some boilerplate.
When I'm confident this is correct, I can fix up the other call sites.
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2021-03-21 00:14:48 -04:00 |
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Thomas Harte
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07a63d62dd
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Adds some quick arithmetic on the clock speed.
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2021-03-20 11:19:44 -04:00 |
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Thomas Harte
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cf9a5d595b
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Completes piping of audio.
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2021-03-19 23:33:46 -04:00 |
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Thomas Harte
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7729f1f3d0
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Attempts automatic Spectrum tape control.
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2021-03-19 22:43:48 -04:00 |
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