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5,164 Commits 8 Branches 121 Tags 496 MiB
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1510 Commits

Author SHA1 Message Date
Thomas Harte
0536697d8f Corrects scope of delay. 2019-02-28 18:46:28 -05:00
Thomas Harte
0dbd8a667d Corrects delay for SN access. 2019-02-27 22:58:43 -05:00
Thomas Harte
d2da55aa03 Adds a single-cycle M1 delay to the ColecoVision. 2019-02-27 22:01:30 -05:00
Thomas Harte
c7c21a7e2c Sorry, ColecoVision, it's composite only for you. 2019-02-24 22:37:24 -05:00
Thomas Harte
16731661e8 Switches back to being explicit about the colour burst phase. 
Some sort of phase inversion otherwise seems to be achievable by software that switch modes often.
 2019-02-24 22:28:11 -05:00
Thomas Harte
d4134cd0d8 Restores proper colour phase to the Apple II. 
Given that its timing errors were fixed, this also switches back to using 'default' colour bursts — i.e. ones with implicit phase. The Apple II continues to be an excellent bellwether for issues in the pipeline, and this helps further to ensure that.
 2019-02-24 14:35:13 -05:00
Thomas Harte
d0b967ce53 Corrects typo; disables original colour ROM usage for now. 2019-02-18 20:49:54 -05:00
Thomas Harte
ac8d43cc4a Improves use of const. 2019-02-18 20:21:41 -05:00
Thomas Harte
40ee215b1b By #define provides a means not to use the real composite samples. 
To aid with debugging.
 2019-02-18 17:20:52 -05:00
Thomas Harte
6c1d94beaa Adds composite monochrome output for the Oric. At least temporarily. 2019-02-18 16:56:48 -05:00
Thomas Harte
7939897622 Fixes announced timing difference between pixel and border lines. 
The Apple II sync fault is now fixed!
 2019-02-12 22:32:02 -05:00
Thomas Harte
3e0b5433b9 Institutes colour/monochrome screen selection as an Apple II option. 
Allowing me to test that straight-through composite still works.
 2019-02-12 19:52:32 -05:00
Thomas Harte
75987f64ec Restores Oric audio. 2019-02-05 21:42:39 -05:00
Thomas Harte
097bc7055e Adds a default selection, for invalid models. 2019-01-25 19:31:44 -05:00
Thomas Harte
6c49953115 Returns gamma correction, and corrects Amstrad CPC brightness. 2019-01-14 22:56:08 -05:00
Thomas Harte
2ef6d4327c Resolves further build warnings. 2019-01-13 20:37:50 -05:00
Thomas Harte
cc95e587db Adds virtual destructors for various interface classes. 2019-01-13 19:19:01 -05:00
Thomas Harte
ccb52fb625 Ensures no writes to pixel_pointer_ when allocation has failed. 2019-01-11 22:00:44 -05:00
Thomas Harte
601961deeb Wires through set_display_type. 2018-11-29 20:44:21 -08:00
Thomas Harte
b723740f64 Improves PAL colours. 2018-11-29 19:12:20 -08:00
Thomas Harte
6be46ae921 Mostly restores Atari 2600 output. PAL colours need work. 2018-11-29 18:26:05 -08:00
Thomas Harte
a25470ee41 Permits tweaking of PhaseLinkedLuminance8 sampling offset. 2018-11-29 16:29:28 -08:00
Thomas Harte
fd579a019b Introduces a new scan source data type, motivated by the reasoning used by the Oric. 
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. 
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. 
Resolving errors in shader generation while I'm here.
 2018-11-22 22:43:42 -05:00
Thomas Harte
5a31891048 Returns Amstrad CPC output. 
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. 
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. 
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. 
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. 
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. 
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. 
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. 
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. 
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
Thomas Harte
40c7a63fb5 Makes a first attempt at Master System IO decoding. 2018-09-22 23:45:29 -04:00
Thomas Harte
d9e65cd758 Ensures neither the ColecoVision nor the MSX processes mid-cycles. 2018-09-21 22:53:35 -04:00
Thomas Harte
e511261b04 Adds a Master System class, so that SMSs can end up somewhere. 2018-09-21 22:13:07 -04:00
Thomas Harte
0d01346ad4 Advertises SMS support and goes as far as realising it needs to spawn a Master System. 2018-09-20 22:04:28 -04:00
Thomas Harte
e7f4babf41 Starts taking steps towards SMS/GG and V9938/9958 support. 
Specifically: routine namespace stuff, plus the intention to move to a table-based operation+cost version of timing. Reordering works fine for the TMS, and probably would also for the SMS/GG, but it'd be problematic with the command engine of the V9938/9958 and maintaining a consistent set of code is easier.
 2018-09-17 22:59:16 -04:00
Thomas Harte
a8b116e217 Turns down the Apple II brightness a little. 
So that light blue is more like a blue.
 2018-09-17 20:08:20 -04:00
Thomas Harte
868cd5cb09 Improves alignment request. 2018-09-12 20:27:02 -04:00
Thomas Harte
dec18d9acc Restores full pixel output to the Electron. 2018-09-12 20:25:30 -04:00
Thomas Harte
a7508bc2ae Switching explicitly to one pixel per sample eliminates the need for a bookender. 2018-09-12 20:11:17 -04:00
Thomas Harte
a38639d099 Eliminates the concept of an iCoordinate. 
Real-life precision appears not to support the idea of sub-sample pixel storage.
 2018-09-12 20:05:39 -04:00
Thomas Harte
c6e94bc2a6 Adds missing #include. 2018-09-11 21:55:03 -04:00
Thomas Harte
09dafb1a79 Simplifies and corrects MSX pasting behaviour. 
Now including mapping \n -> \r.
 2018-09-11 21:46:28 -04:00
Thomas Harte
36ff2105fb Updates C-style (bool) casts. 2018-09-11 20:37:15 -04:00
Thomas Harte
5445081c96 It's eight pixels that aren't written in double output mode, not four. 2018-09-10 21:38:05 -04:00
Thomas Harte
6e9cd5cb21 Resolves over-brightness created by over-composition. 2018-09-09 20:30:43 -04:00
Thomas Harte
8d79a1e381 Corrected fat low-res implementation. 
As per comment of awanderin that "the odd addresses don't get their pixels auto-shifted by the hardware as with normal lo-res".
 2018-09-09 10:06:21 -04:00
Thomas Harte
d70f5da94e Attempts an implementation of the undocumented low res + annunciator 3 graphics mode. 2018-09-08 20:51:15 -04:00
Thomas Harte
afeec09902 Gets explicit about DHIRES being annunciator 3; implements four-colour high res mode. 2018-09-06 23:23:19 -04:00
Thomas Harte
0526ac2ee2 Slightly increases const correctness. 
The converters from source data to output pixels do not modify the source data. It's a shame there's no `restrict` in C++.
 2018-09-05 11:36:40 -04:00
Thomas Harte
8b661fb90f Introduces an extra level of indirection for text mapping. 2018-09-05 10:26:08 -04:00
Thomas Harte
dab7d3db1b Merge branch 'master' into 40ColumnTextCorruption 2018-08-30 20:24:47 -04:00
Thomas Harte
d53b38ec7e Correction: 0xc011 et al get the keyboard value in bits 0 to 6 and the switch value in bit 7. 2018-08-30 20:18:36 -04:00
Thomas Harte
2e04c4442c Adds mirrors for keyboard input and the audio toggle. 2018-08-27 21:14:21 -04:00
Thomas Harte
0599d9602e Ensures no out-of-bounds accesses to inverses on a IIe. 2018-08-26 23:02:31 -04:00
Thomas Harte
234bef2a88 Adds default to make it explicit that fetch_address is initialised. 2018-08-24 22:26:03 -04:00
Thomas Harte
1f491e764e Nudges visible area slightly to the right. 2018-08-24 22:08:11 -04:00
Thomas Harte
114a43a662 Corrects improper indexing for byte shift. 2018-08-24 21:58:43 -04:00
Thomas Harte
97a89aaf4d Factors out the stuff of deferred action interleaving, as I suspect it'll come in handy. 2018-08-24 20:04:26 -04:00
Thomas Harte
61e46399dc About face! There should be no delay on serialisation, but a delay on interpretation-affecting soft switches. 2018-08-22 21:56:45 -04:00
Thomas Harte
e802f6ecc2 Rearranges draw loop around a fixed-size 568-sample line buffer. 2018-08-19 22:31:04 -04:00
Thomas Harte
4209f0e044 Moves memory collection into a separate loop. 2018-08-18 21:54:24 -04:00
Thomas Harte
33576aa2c4 Uses const to ensure output_* are properly constrained. 2018-08-18 21:36:48 -04:00
Thomas Harte
17bf1a64bf Moves the stuff of generating pixels out of the main loop. 2018-08-18 18:44:31 -04:00
Thomas Harte
f8d46f8f3d Merge branch 'master' into AppleDelay 2018-08-18 14:11:21 -04:00
Thomas Harte
be01203cc1 Starts to expand the range of supported 6502s. 
This fully implements the NES 6502 because, well, it's virtually no extra work, and ensures that RDY takes effect on write cycles on 65C02s.
 2018-08-13 22:17:22 -04:00
Thomas Harte
4d1d19a464 Introduces an intermediate buffer for Apple II video data. 2018-08-12 20:36:08 -04:00
Thomas Harte
cb47575860 Eliminates stdout chatter. 2018-08-11 22:57:54 -04:00
Thomas Harte
434d184503 Corrects deserialisation order in double low res mode. 2018-08-11 22:53:06 -04:00
Thomas Harte
7374c665e8 Corrects regression in video flushing. 2018-08-11 19:57:39 -04:00
Thomas Harte
60ab6f0c2a Entrusts IIe-esque character logic fully to the ROM. 2018-08-11 18:45:39 -04:00
Thomas Harte
a13eb351da Implements the Enhanced IIe, other than some text selection errors. 2018-08-11 10:26:30 -04:00
Thomas Harte
76a73c835c Forces 6502 consumers to declare which model — the original, 65C02 or 65SC02. 
All present machines use a regular 6502.
 2018-08-06 20:06:07 -04:00
Thomas Harte
de68e70246 Fixes various IIe video deficiencies. 
Specifically:
* the double-high resolution switches should be read/write; and
* the other IIe-specific switches should cause a video update for real-time effect.
 2018-08-05 17:47:23 -04:00
Thomas Harte
ce14cc8677 Flips meaning of analogue input bits, correcting most joystick titles. 
Mysteriously, some functioned correctly before this. But they continue to do so.
 2018-08-05 17:36:01 -04:00
Thomas Harte
55f2fccf5e Extends correct text handling to 80-column mode. 2018-08-04 22:25:29 -04:00
Thomas Harte
26624d7652 Fixes vertical blank signal; it should be the other way around. 2018-08-04 20:57:02 -04:00
Thomas Harte
85fb4773b0 Tweaks Apple key mapping and implements reset_all_keys. 2018-08-04 20:31:37 -04:00
Thomas Harte
099d66804e Makes colour burst phase explicit. 2018-08-04 19:29:34 -04:00
Thomas Harte
086596c28e Adds reading of vertical blank and implements the full IIe keyboard logic. 
i.e. there are now two Apple keys, and shift isn't assumed.
 2018-08-04 19:17:04 -04:00
Thomas Harte
3aeb4213fe Implements the C010 read value. 2018-08-04 17:57:02 -04:00
Thomas Harte
558b96bc05 Corrects IIe text display. 2018-08-04 16:52:29 -04:00
Thomas Harte
e97cc40a2c Corrects typo in Cx-page ROM paging. 2018-08-04 12:44:58 -04:00
Thomas Harte
c4f86cc324 The Disk II now being its proper speed, withdraws the quickload option. 2018-08-03 21:20:21 -04:00
Thomas Harte
74a2f717b3 Turns down the composite signal amplitude a little, to help colour distinctness. 2018-08-01 18:52:42 -04:00
Thomas Harte
c91eaaf8da Takes a stab at double low-res graphics. 2018-07-31 21:45:09 -04:00
Thomas Harte
a36f37d240 Introduces a 1/14th delay in output of double high res. 2018-07-31 21:29:51 -04:00
Thomas Harte
c773d3501a Implements the INTC8ROM switch. 
Finally causing the Zellyn tests to pass! Is this nightmare behind me?
 2018-07-31 19:00:46 -04:00
Thomas Harte
5810f9b3f9 Fixes high resolution address range and switching logic. 2018-07-30 23:23:18 -04:00
Thomas Harte
3f56683342 Fixes order of deserialisation between auxiliary and base RAM. 2018-07-30 23:08:45 -04:00
Thomas Harte
16ccbdefd6 Of course, | has higher precedence than ?. Classic! 2018-07-30 23:08:22 -04:00
Thomas Harte
e9aaa5bbdf Factors out the page-mapping function. 
For one less potential source of failure.
 2018-07-30 22:23:48 -04:00
Thomas Harte
ecb26e3281 Corrections: slot_C3_rom_ works the other way around; 80STORE doesn't affect most of RAM but does always affect the text screen. 
Also factored out `set_zero_page_paging` for consistency.
 2018-07-30 19:54:25 -04:00
Thomas Harte
5aa0b17720 Improves IIe paging further. 2018-07-29 23:02:27 -04:00
Thomas Harte
632b37ecec Attempts an implementation of auxiliary memory. 2018-07-29 10:41:12 -04:00
Thomas Harte
c905de2e40 Restores IIe ROM-over-card paging. 2018-07-28 13:31:25 -04:00
Thomas Harte
bc2afe69e1 Accepting that memory mapping on a IIe is more complicated than I anticiapted, introduces mapping for all pages. 
Also picks a name for the Unenhanced Apple IIe ROM.
 2018-07-28 13:02:49 -04:00
Thomas Harte
894998b163 Merge branch 'master' into IIe 2018-07-28 10:54:04 -04:00
Thomas Harte
3c33ccd730 Eliminates various blank lines. 2018-07-28 10:52:34 -04:00
Thomas Harte
5f2b9b2d5a Implements the alternative zero page soft switch. 2018-07-25 22:10:21 -04:00
Thomas Harte
5c4506a9db Talks the IIe into proceeding to a beep and an improperly-formed logo. 2018-07-25 21:43:12 -04:00
Thomas Harte
55a6431fb3 Puts in enough logic to be able to launch a non-functional IIe. 2018-07-25 18:58:34 -04:00
Thomas Harte
ede2696a77 Edges further towards implementing the IIe video subsystem. 
All video-specific switches are in place, and mostly honoured, and a IIe machine configuration is advertised at least.
 2018-07-24 22:15:42 -04:00
Thomas Harte
59b9e39022 Starts the process of supporting the Apple IIe graphics modes. 
Albeit that I'm not yet even up on the proper soft switches.
 2018-07-23 22:14:41 -04:00
Thomas Harte
e339d169c5 Ensures the joystick doesn't obstruct tape input. 2018-07-12 22:10:05 -04:00
Thomas Harte
58484e8f37 Adds joystick support for the MSX. 2018-07-12 21:42:47 -04:00
Thomas Harte
8503589828 Corrects failure to retain OS. 2018-07-10 22:05:50 -04:00
Thomas Harte
efd812cf22 Ensures no buffer overrun when installing the OS ROM. 2018-07-10 21:54:36 -04:00
Thomas Harte
57f161e64c Corrects documentation of the media target. 2018-07-10 21:42:09 -04:00