Thomas Harte
fd579a019b
Introduces a new scan source data type, motivated by the reasoning used by the Oric.
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Specifically: it'll allow PCM sampling of the potentially arbitrary composite generation logic of various machines.
2018-11-28 20:40:22 -08:00
Thomas Harte
e39ecf59ef
Restores RGB mode to the Oric. More thought required for composite.
2018-11-28 18:40:43 -08:00
Thomas Harte
5f90941e4e
Starts nudging the Oric back to functionality under the new regime.
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i.e. one where it can't invent internal pixel formats.
2018-11-28 18:16:13 -08:00
Thomas Harte
64465f97b6
Starts towards reintroducing the proper mechanisms for selecting a display type at runtime.
2018-11-28 17:53:33 -08:00
Thomas Harte
aa22af6f05
Corrects regression in VDP type selection.
2018-11-26 22:40:01 -05:00
Thomas Harte
a6383247fc
Attempts further to ensure proper CRT signalling.
2018-11-26 22:36:22 -05:00
Thomas Harte
b69ac4ec2f
Ensures video stability is no longer affected by transient allocation failures.
2018-11-25 22:04:04 -05:00
Thomas Harte
f4764ea680
Fixes divider.
2018-11-24 16:56:41 -05:00
Thomas Harte
ee89be6730
Removes many stray spaces.
2018-11-23 22:32:32 -05:00
Thomas Harte
770d7e90e9
Removes stale sampling functions.
2018-11-22 22:47:29 -05:00
Thomas Harte
b9aca39eb0
Reintroduces Vic-20 output.
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Resolving errors in shader generation while I'm here.
2018-11-22 22:43:42 -05:00
Thomas Harte
5a31891048
Returns Amstrad CPC output.
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Which is probably it until I get some more composite processing back in.
2018-11-15 21:32:22 -05:00
Thomas Harte
8b37496447
Restores video output to the Master System.
2018-11-15 21:21:54 -05:00
Thomas Harte
8f6664f0d7
Starts towards picking an input shader based on data type and pipeline.
2018-11-15 21:02:46 -05:00
Thomas Harte
3eab1f8f7c
Removes a little cruft.
2018-11-14 22:26:31 -05:00
Thomas Harte
9dff13cbbf
Re-establishes output from the machines with 9918s and derivatives.
2018-11-14 22:25:19 -05:00
Thomas Harte
a47de9a884
Returns the Apple II to submitting video.
2018-11-14 22:04:57 -05:00
Thomas Harte
8a699b6072
Kills setup_output definitively, saving some indirection. set_scan_target takes its place.
2018-11-14 21:52:57 -05:00
Thomas Harte
6d277fecd5
Makes ScanTarget a little more communicative and orthogonal.
2018-11-10 19:52:57 -05:00
Thomas Harte
55da1e9c0f
Simplifies semantics a little and starts accepting a single buffer of pixel data.
2018-11-06 22:23:38 -05:00
Thomas Harte
014da41471
Ensures scan positions are communicated with a specified range, and switches manner of pixel clock communication.
2018-11-04 21:06:25 -05:00
Thomas Harte
f6562de325
Possibly adds enough for the Electron and ZX80 to start outputting dummy lines.
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Let's see!
2018-11-03 23:40:39 -04:00
Thomas Harte
b40211d2c0
Starts to bend 'CRTMachine' to a world farther from owning the GPU relationship.
2018-11-03 21:54:25 -04:00
Thomas Harte
da4d883321
Adds first, incomplete attempts to talk to a ScanTarget from the CRT.
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Does away with the hassle of `unsigned` while I'm here; that was a schoolboy error.
2018-11-03 19:58:44 -04:00
Thomas Harte
d1fc39d6e5
Attempts to carry on even if no BIOS is found.
2018-10-26 21:19:16 -04:00
Thomas Harte
a8645f80bf
Introduces 'non-exclusive' emulator-space keyboards.
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i.e. sets of keys that don't amount to an entire keyboard in the modern sense. Experimentally used by the Master System for its reset key.
2018-10-24 21:59:30 -04:00
Thomas Harte
e3fd63b2d7
Adds composite/RGB selection for the Master System.
2018-10-23 22:30:24 -04:00
Thomas Harte
00e7958a97
Separates request for an SMS2 VDP from current graphics mode.
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Thereby fixes various minor segments of Codemasters games.
2018-10-23 22:19:45 -04:00
Thomas Harte
0822c96ce0
Implements the proper row counter values for > 192 row modes.
2018-10-19 22:37:56 -04:00
Thomas Harte
f49718e94b
Ensures Codemasters games have the proper initial state.
2018-10-19 22:10:14 -04:00
Thomas Harte
6fff514901
Honours the region by implementing Japanese (no BIOS) and European (PAL) paths.
2018-10-19 21:37:05 -04:00
Thomas Harte
c365cca38a
Makes order of operations explicit.
2018-10-18 22:37:04 -04:00
Thomas Harte
10d9cbdeb1
Adds an extra LOG to track the memory map as a potential cause of emulation failure.
2018-10-18 21:48:37 -04:00
Thomas Harte
57f03e660c
Ensures console output only in debug builds.
2018-10-18 21:16:56 -04:00
Thomas Harte
6a2db52adb
Ensures safe Megacart cartridge sizes too.
2018-10-18 21:09:05 -04:00
Thomas Harte
34e13d0d4d
Clears top bit when reading the keypad and ensures no undefined behaviour reading the cartridge.
2018-10-18 21:05:58 -04:00
Thomas Harte
0278d5b61c
Restores SG1000 compatibility.
2018-10-18 19:13:15 -04:00
Thomas Harte
52e02db5c8
Introduces horizontal counter latching and reading.
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Then makes a new guess at frame IRQ position. But gets it wrong. Hmmm.
2018-10-11 19:56:32 -04:00
Thomas Harte
24644f1dd1
Adds a low-pass filter, picked entirely by ear, and switches to composite output, at least for now.
2018-10-07 18:39:03 -04:00
Thomas Harte
76f3b9f6ba
Fixed: paging writes don't obstruct RAM.
2018-10-06 14:26:00 -04:00
Thomas Harte
7830cda912
Implements line querying and most of line interrupts.
2018-10-04 22:50:35 -04:00
Thomas Harte
e9328d819e
Switches to RGB output, at least for development.
2018-09-30 20:47:03 -04:00
Thomas Harte
2e4c4c3e91
Makes some attempt to implement paging.
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This causes several of the 32kb games to be recognised by the BIOS and permitted to start, so it really really may be time to stop deferring work on the VDP.
2018-09-24 21:34:42 -04:00
Thomas Harte
7515fa8a98
Ensures the SG1000 gets an unadulterated TMS and SN.
2018-09-23 22:24:29 -04:00
Thomas Harte
5b9e7213dd
Adds a couple of joystick inputs.
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SG1000 titles all seem to work now.
2018-09-23 21:55:07 -04:00
Thomas Harte
2253341904
This now goes far enough for the only SG1000 game I'm testing to start up.
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Which hopefully gives me as much as I need to implement joypads, etc, and definitively get to just the VDP being outstanding.
2018-09-23 17:42:42 -04:00
Thomas Harte
e155dc8d6e
Adds fairly standard memory map indirection.
2018-09-23 17:36:30 -04:00
Thomas Harte
00b2db4fb9
Ensures the Master System is informed when it should pretend to be an SG1000.
2018-09-23 16:34:47 -04:00
Thomas Harte
f59386f523
Adds just enough input logic that the Sega sound now plays.
2018-09-23 16:05:37 -04:00
Thomas Harte
38a1fde3bf
Attempts to permit Master System interrupts.
2018-09-23 00:07:46 -04:00
