Thomas Harte
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a6b75b8637
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Attempts improvements to video fetch timing. Alas, a lot of guess work here.
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2021-03-22 15:59:03 -04:00 |
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Thomas Harte
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bdb3bce8d6
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Corrects semantics on contended-timing calculation.
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2021-03-22 15:48:51 -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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f37f89a7d3
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Merge branch 'master' into ZXSpectrum
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2021-03-21 22:44:37 -04:00 |
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Thomas Harte
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d987e5a9d7
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Merge pull request #887 from TomHarte/ZX80Wait
Ensures no signalling to wait by a ZX80, ever.
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2021-03-21 22:44:11 -04:00 |
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Thomas Harte
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c097ed348a
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Ensures no signalling to wait by a ZX80, ever.
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2021-03-21 22:38:50 -04:00 |
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Thomas Harte
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0f9ab53ea0
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Resolves GCC warnings from dangling Apple IIgs work.
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2021-03-21 22:36:18 -04:00 |
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Thomas Harte
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dd7419282d
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Resolves GCC warnings from dangling Apple IIgs work.
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2021-03-21 22:25:14 -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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6482303063
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Reduces code duplication slightly.
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2021-03-21 20:34:58 -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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064667c0c3
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Corrects asymmetrical flash, ensures consistent burst phase.
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2021-03-21 20:22:27 -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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1b0f45649e
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Improves contended timing.
Still not quite on the money, but this was an overt bug.
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2021-03-21 00:00:18 -04:00 |
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Thomas Harte
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42bfabbe8c
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The implication seems to be of a fixed phase swing.
I'm enquiring further.
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2021-03-20 23:46:13 -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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26911a16e8
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Lengthens sync, better to conform to PAL; experiments with fixed-phase colour burst.
I need to get hold of real documentation here.
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2021-03-20 10:38:21 -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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Thomas Harte
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7d59ff6d8f
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Builds in a colour burst, producing colour composite.
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2021-03-19 22:25:37 -04:00 |
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Thomas Harte
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2ee478b4c4
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Goes some way towards wiring up Spectrum options.
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2021-03-19 22:17:20 -04:00 |
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Thomas Harte
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bb0d35e3d0
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Minor formatting/layout fixes.
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2021-03-19 22:17:03 -04:00 |
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Thomas Harte
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a482ce1546
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Adds a tape player.
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2021-03-19 11:12:50 -04:00 |
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Thomas Harte
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a35e1f4fbe
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Starts to make formal Spectrum accommodations.
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2021-03-19 11:06:09 -04:00 |
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Thomas Harte
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2371048ad1
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Formally separates keyboard code.
With an eye to formalising the Spectrum/ZX81/ZX80 differences.
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2021-03-19 10:36:08 -04:00 |
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Thomas Harte
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93b9ea67e6
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Takes a run at contended timings.
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2021-03-19 08:49:56 -04:00 |
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Thomas Harte
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f8c9ef2950
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Add necessary header for memset.
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2021-03-19 00:00:59 -04:00 |
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Thomas Harte
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87fac15cc4
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This is going to remain purely a template; no .cpp.
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2021-03-18 23:51:45 -04:00 |
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Thomas Harte
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2d51924a3c
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Wires up Spectrum keyboard.
The machine now appears to be fully interactive and functional. Timing and media aside, that is.
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2021-03-18 23:51:21 -04:00 |
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Thomas Harte
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c3d96b30d7
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Factors out a little of the ZX81's keyboard logic.
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2021-03-18 23:45:57 -04:00 |
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Thomas Harte
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44240773ef
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Corrects address generation, ink/paper selection.
Seemingly to give a correct +2a boot. Time to add a keyboard and find out, I guess.
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2021-03-18 23:30:48 -04:00 |
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Thomas Harte
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ed587a4db5
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Provides a better no-port-here value.
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2021-03-18 23:14:39 -04:00 |
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Thomas Harte
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020a04006e
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Adds flashing, randomises initial RAM contents.
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2021-03-18 23:07:51 -04:00 |
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Thomas Harte
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622a8abf7f
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Takes a stab at pixel output.
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2021-03-18 22:57:10 -04:00 |
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Thomas Harte
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871bac6c8a
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Marks out and approximately centres a pixel region.
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2021-03-18 22:41:20 -04:00 |
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Thomas Harte
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fe3e8f87e7
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Takes a shot at an all-border output.
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2021-03-18 22:29:24 -04:00 |
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Thomas Harte
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87fc7c02e8
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Provides a base pointer for video output.
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2021-03-18 22:04:41 -04:00 |
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Thomas Harte
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f2620e6afb
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Adds a CRT. Not yet clocked.
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2021-03-18 21:54:42 -04:00 |
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Thomas Harte
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ab2ad70885
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Takes a run at interrupts.
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2021-03-18 21:29:52 -04:00 |
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Thomas Harte
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135134acfd
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Adds a shell for video emulation.
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2021-03-18 12:47:48 -04:00 |
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Thomas Harte
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5664e81d48
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It appears the +2a and +3 have a different clock rate.
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2021-03-18 12:41:24 -04:00 |
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Thomas Harte
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c353923557
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This can be constexpr.
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2021-03-18 12:40:59 -04:00 |
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Thomas Harte
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b830d62850
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Adds quick notes on port FE.
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2021-03-18 12:32:54 -04:00 |
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Thomas Harte
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17f551e89d
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Attempts a full audio wiring.
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2021-03-18 12:23:54 -04:00 |
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Thomas Harte
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4a4da90d56
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Implements some of the memory map, and instantiates audio objects.
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2021-03-18 12:14:48 -04:00 |
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Thomas Harte
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404c1f06e6
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Insert missing space.
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2021-03-18 10:44:01 -04:00 |
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Thomas Harte
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730bfcd1fd
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Stumbles towards a memory map.
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2021-03-18 10:43:51 -04:00 |
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Thomas Harte
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97249b0edd
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Slow walks further towards a functioning Spectrum.
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2021-03-18 10:18:17 -04:00 |
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Thomas Harte
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5a1bda1d82
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Performs boilerplate towards a ZX Spectrum class.
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2021-03-17 23:38:55 -04:00 |
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Thomas Harte
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9bec91c2b9
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Correct further namespace references.
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2021-03-17 22:56:03 -04:00 |
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Thomas Harte
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3d1775d853
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Correct namespace.
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2021-03-17 22:52:23 -04:00 |
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Thomas Harte
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814c057570
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Update further path references.
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2021-03-17 22:46:25 -04:00 |
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Thomas Harte
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b63ca16ce2
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Attempts to hatch a Sinclair namespace.
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2021-03-17 22:40:29 -04:00 |
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Thomas Harte
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cdc19c6990
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Adds TODO.
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2021-03-15 11:39:15 -04:00 |
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Thomas Harte
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1a5dafae00
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Slightly neatens.
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2021-03-15 11:37:03 -04:00 |
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Thomas Harte
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d368dae94a
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Adds tape motor LED.
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2021-03-12 23:09:51 -05:00 |
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Thomas Harte
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7d778bc328
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Formally introduces fast tape support as an option.
It doesn't feel that fast yet though.
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2021-03-12 22:57:02 -05:00 |
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Thomas Harte
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7a8317ad81
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It seems a full CRC is in play.
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2021-03-12 22:45:48 -05:00 |
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Thomas Harte
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a32a2f36be
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Advances to correctly reading bytes.
Something is still amiss though. Maybe I'm supposed to update the checksum?
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2021-03-12 19:15:35 -05:00 |
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Thomas Harte
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cd215ef521
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Stumbles towards supporting fast tape loading.
Right now: in a non-optional manner.
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2021-03-12 18:42:17 -05:00 |
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Thomas Harte
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67408521cd
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Makes absolutely sure not to try to use quickboot workaround for Mac 128kb/512kb.
Albeit that it should be harmless; it's just seeding RAM.
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2021-03-06 22:34:35 -05:00 |
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Thomas Harte
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f05260b839
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ZX80/1: fix initial key state, wait line when NMI disabled.
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2021-03-06 21:59:45 -05:00 |
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Thomas Harte
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7b164de6fd
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Reenables interrupts.
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2021-03-06 18:53:39 -05:00 |
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Thomas Harte
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24e68166c6
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Minor clean-ups of my temporary cruft.
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2021-03-06 17:11:06 -05:00 |
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Thomas Harte
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b72474f418
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Reduces debugging shout outs a touch.
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2021-03-03 20:53:05 -05:00 |
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Thomas Harte
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38046d49aa
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Increases debugging noise.
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2021-03-03 20:52:14 -05:00 |
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Thomas Harte
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4601421aa6
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This conditional is gone.
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2021-03-03 20:52:01 -05:00 |
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Thomas Harte
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2f45e07d82
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Further consolidates region map, now that shadowing is orthogonal.
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2021-02-28 15:22:36 -05:00 |
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Thomas Harte
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496b6b5cfc
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Introduces a further 128 bits of storage to eliminate the conditional in IsShadowed.
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2021-02-28 15:14:32 -05:00 |
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Thomas Harte
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8604b1786e
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Simplifies banks $02+ to a single region.
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2021-02-27 23:34:51 -05:00 |
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Thomas Harte
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267e28e012
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Adds various bits of debugging detritus.
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2021-02-27 22:27:57 -05:00 |
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Thomas Harte
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631a8a7421
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Adds bitset header.
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2021-02-27 22:13:49 -05:00 |
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Thomas Harte
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7dcb0553e4
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Switches to a target-centric view of shadowing.
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2021-02-27 22:13:10 -05:00 |
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Thomas Harte
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2a7ea9f57c
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Merge branch 'master' into AppleIIgs
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2021-02-26 21:31:18 -05:00 |
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Thomas Harte
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9781460c41
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Thanks to a hint from the MAME guys: finally completes Macintosh 128kb and 512kb emulation (!)
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2021-02-26 21:22:35 -05:00 |
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Thomas Harte
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55c9d152e9
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Slightly smarter: this does branchless shadowing without additional storage.
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2021-02-24 18:46:41 -05:00 |
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Thomas Harte
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6cf9099ce1
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Don't clear the mouse data full flag until both registers have been read.
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2021-02-23 21:57:02 -05:00 |
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Thomas Harte
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e6dc39f6f0
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Makes an attempt at mouse event transmission.
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2021-02-19 22:48:15 -05:00 |
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Thomas Harte
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28ce675c96
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Takes a further stab at ::CommandDataIsValid.
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2021-02-19 22:22:14 -05:00 |
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Thomas Harte
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3d91b0a31b
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Fixes keyboard data return.
Input sort of works now! Except that key repeat is way out of control.
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2021-02-19 21:55:06 -05:00 |
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Thomas Harte
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5d1970d201
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Adds a hacky different guess at how register access might work.
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2021-02-19 21:46:18 -05:00 |
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Thomas Harte
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72d7901c88
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Takes a shot at the keyboard data full flag.
Just a guess. But likely?
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2021-02-19 20:06:12 -05:00 |
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Thomas Harte
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60cfec6a65
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Amongst ever more cruft, adds a couple of extra asserts.
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2021-02-18 22:49:48 -05:00 |
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Thomas Harte
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2e9065b34c
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Increases number of fixed initial values.
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2021-02-18 22:48:53 -05:00 |
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Thomas Harte
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e42843cca0
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This may temporarily exhaust my wit for asserts.
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2021-02-16 22:47:46 -05:00 |
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Thomas Harte
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3336a123f8
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Asserts even more overtly.
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2021-02-16 22:33:28 -05:00 |
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Thomas Harte
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28bd620e7f
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Adds joystick support to the IIgs.
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2021-02-16 19:39:22 -05:00 |
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Thomas Harte
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b117df3367
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Factors out joystick logic.
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2021-02-16 19:17:32 -05:00 |
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Thomas Harte
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fa8236741d
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Takes a shot at an ADB mouse.
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2021-02-15 20:49:16 -05:00 |
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Thomas Harte
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e16d5f33d1
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Adds service requests. The microcontroller now appears to consume keyboard events.
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2021-02-15 20:33:10 -05:00 |
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Thomas Harte
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e773b331cd
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Implements register 2 listen.
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2021-02-15 15:05:46 -05:00 |
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Thomas Harte
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99c21925f4
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Makes attempt at keyboard mapping.
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2021-02-15 15:00:12 -05:00 |
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Thomas Harte
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eccf5ca043
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Makes first effort to wire up the ADB vertical blank input.
However: looking at the disassembly, I'm not sure it really is wired to INTR. So work to do.
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2021-02-14 22:20:58 -05:00 |
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Thomas Harte
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24af62a3e5
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Sets a default handler of 1.
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2021-02-14 22:20:07 -05:00 |
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Thomas Harte
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52cf15c3e6
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Attempts to route out modifier state.
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2021-02-14 21:15:31 -05:00 |
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Thomas Harte
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a791680e6f
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Implements set_status as per advice.
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2021-02-14 21:04:20 -05:00 |
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