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7742 Commits

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Author SHA1 Message Date
Thomas Harte
c88abed2dc Merge branch 'master' into DesktopScreenshots 2021-03-24 21:47:40 -04:00
Thomas Harte
e42b6cb3c8
Merge pull request #892 from TomHarte/FixedFloatingBus 
Attempts to implement proper floating bus behaviour.
 2021-03-24 21:44:01 -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
ae4ccdf5e6 Merge branch 'master' into DesktopScreenshots 2021-03-24 18:40:20 -04:00
Thomas Harte
6bdaa54aaf Bumps copyright year. 2021-03-23 17:46:32 -04:00
Thomas Harte
3543a25168
Merge pull request #890 from TomHarte/SpectrumPolish 
Adds Spectrum polish
 2021-03-23 17:23:15 -04:00
Thomas Harte
03ef81b07c Attempts to reduce initial bounce. 2021-03-23 17:12:00 -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
ad8cb52f11 Improves const correctness. 2021-03-23 16:59:26 -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
584a5ad7fb Maps HFE files to the Spectrum. 2021-03-23 10:30:30 -04:00
Thomas Harte
0ab85cce20
Merge pull request #888 from TomHarte/SpectrumShots 
Adds mention of the ZX Spectrum.
 2021-03-23 08:01:41 -04:00
Thomas Harte
44e5caf803 Adds mention of the ZX Spectrum. 2021-03-23 08:00:10 -04:00
Thomas Harte
04291e9a86
Merge pull request #883 from TomHarte/ZXSpectrum 
Adds the ZX Spectrum +2a and +3 as emulated machines.
 2021-03-22 23:28:04 -04:00
Thomas Harte
d0776b58cf Tweaks timing empirically. 2021-03-22 23:20:49 -04:00
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
cc3c3663f6 Makes minor style improvements. 2021-03-22 19:55:03 -04:00
Thomas Harte
b76c923ff4 Adds detection of Spectrum-bootable disks. 2021-03-22 19:53:51 -04:00
Thomas Harte
3c1131a84b Attempts to implement the +3. 2021-03-22 19:36:05 -04:00
Thomas Harte
a3cd953415 Fixes Spectrum machine selection. 2021-03-22 19:28:12 -04:00
Thomas Harte
c0abdf1b86 Factors out the CPC's simple FDC adaptor. 2021-03-22 19:12:10 -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
Thomas Harte
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
d987e5a9d7
Merge pull request #887 from TomHarte/ZX80Wait 
Ensures no signalling to wait by a ZX80, ever.
 2021-03-21 22:44:11 -04:00
Thomas Harte
fcba0cc3d6
Merge pull request #886 from TomHarte/AppleIIgsWarnings 
Resolves GCC warnings from dangling Apple IIgs work.
 2021-03-21 22:40:56 -04:00
Thomas Harte
c097ed348a Ensures no signalling to wait by a ZX80, ever. 2021-03-21 22:38:50 -04:00
Thomas Harte
0f9ab53ea0 Resolves GCC warnings from dangling Apple IIgs work. 2021-03-21 22:36:18 -04:00
Thomas Harte
21b1dab4a5 Adds the ZX Spectrum to Qt's New... menu. 2021-03-21 22:35:46 -04:00
Thomas Harte
dd7419282d Resolves GCC warnings from dangling Apple IIgs work. 2021-03-21 22:25:14 -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
388b136980 Relaxes test for a valid TAP. 2021-03-21 20:31:09 -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