Thomas Harte
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f5d3d6bcea
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Splits the lowpass filter into push and pull variants.
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2021-11-21 15:37:29 -05:00 |
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Thomas Harte
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f4db4c3a73
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Implements ROM::Request::validate.
It now also validates ROM sizes, so can no longer take a const Map.
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2021-06-04 18:54:50 -04:00 |
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Thomas Harte
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a30eeaab6a
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Starts to introduce a new grammar for ROM requests.
They can be optional, and chained together in AND or OR combinations. A central catalogue knows the definitions of all ROMs.
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2021-06-03 21:55:59 -04:00 |
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Thomas Harte
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22c31e4f55
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Tightens automatic tape control timing.
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2021-05-08 17:34:59 -04:00 |
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Thomas Harte
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052e284c33
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Add overt fallthrough.
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2021-05-03 22:17:43 -04:00 |
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Thomas Harte
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2c18bb4508
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Make it overt that this can't return without a value.
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2021-05-03 22:17:12 -04:00 |
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Thomas Harte
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b6554c8255
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Adds joystick support.
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2021-04-28 20:19:01 -04:00 |
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Thomas Harte
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708c24cc57
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This field is counted in half-cycles.
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2021-04-26 21:20:32 -04:00 |
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Thomas Harte
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b7a62e0121
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Adds SZX support.
Tweaking exposed Spectrum state object as relevant.
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2021-04-26 20:47:28 -04:00 |
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Thomas Harte
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3348167c46
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Ensures AY registers are conveyed.
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2021-04-26 17:39:11 -04:00 |
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Thomas Harte
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700c505974
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Ensures the ZX Spectrum properly reports its display type.
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2021-04-25 21:16:22 -04:00 |
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Thomas Harte
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d403036d86
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Reduce bounce at Spectrum startup.
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2021-04-25 20:56:57 -04:00 |
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Thomas Harte
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5e08d7db39
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Carries through paging state; avoids file rereads.
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2021-04-25 20:46:49 -04:00 |
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Thomas Harte
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205518ba75
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Switch to more efficient copy.
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2021-04-25 16:51:07 -04:00 |
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Thomas Harte
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2510064218
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Completes state object.
Subject to not yet dealing with last_fetches_ and last_contended_access_ correctly. Thought required.
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2021-04-25 14:20:40 -04:00 |
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Thomas Harte
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0ef2806970
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Adds just enough to ensure that border state gets through.
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2021-04-25 14:16:35 -04:00 |
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Thomas Harte
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fd271d920b
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Adds capture and forwarding of border colour.
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2021-04-25 14:00:12 -04:00 |
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Thomas Harte
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2bbf8bc9fa
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Ensures 16/48kb snapshots are properly copied into place.
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2021-04-25 13:27:11 -04:00 |
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Thomas Harte
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a5098a60ec
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Attempts to get in-SNA software to start.
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2021-04-25 13:18:26 -04:00 |
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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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9cc747b3e2
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Resolves potential source of errors: specifying incorrect table size.
(Having made exactly this mistake with the ZX Spectrum)
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2021-04-24 12:10:28 -04:00 |
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Thomas Harte
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37dcf61130
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Add timing tests, fix +3 discrepancy.
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2021-04-23 22:29:57 -04:00 |
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Thomas Harte
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9731fdd33b
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Moves horizontal sync on the 48kb.
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2021-04-21 19:46:44 -04:00 |
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Thomas Harte
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d0c789ff9a
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Locks declarative form of contention closer to regular expressions.
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2021-04-21 19:37:36 -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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704737144a
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Corrects all interrupt timing for sign and off-by-one errors.
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2021-04-18 18:40:44 -04:00 |
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Thomas Harte
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e87e851401
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Add a redundant but idiomatic initial value.
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2021-04-18 11:56:22 -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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93422f4b1c
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Brings timings into line with WoS specs.
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2021-04-16 22:40:51 -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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d7954a4cb1
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Tweaks timing a little.
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2021-04-15 21:51:49 -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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fa18b06dbf
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Correct get_floating_value to be consistent in out-of-bounds behaviour.
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2021-04-15 21:13:36 -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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60e8273de2
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Tweaks video timing, again.
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2021-04-06 21:04:54 -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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16bfe1a55c
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Resolves use-after-return memory error.
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2021-04-04 22:45:56 -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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1da51bee6c
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14368 and six seem to be the proper numbers, per my comprehension of Patrick Rak.
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2021-04-04 19:52:19 -04:00 |
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