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1370 Commits

Author SHA1 Message Date
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
Thomas Harte
0897210969 Neither cartridge machine should be a media target; their media can't be changed at runtime. 2018-07-10 21:40:13 -04:00
Thomas Harte
7e58a44771 Renames ConfigurationTarget to MediaTarget as per its newly-reduced interface. 2018-07-10 21:32:28 -04:00
Thomas Harte
3862fdb44c Simplifies initialisation procedure for all machines. 
With the side effect of allowing every machine to try to load only the ROMs that it needs.
 2018-07-10 20:00:46 -04:00
Thomas Harte
c97c5fa03a [Re-]recalibrates CRT retrace period and affected view windows. 
In the hope of moving the CPC closer to the real CTM visible area.
 2018-07-05 22:07:18 -04:00
Thomas Harte
640a84d456 Shift the h-within-v pulse to eliminate a curved top line. 2018-06-24 11:27:18 -04:00
Thomas Harte
04f6cb1750 Merge branch 'master' into AppleIIEqualisation 2018-06-23 23:10:29 -04:00
Thomas Harte
a93f8103ad Zooms out the CPC a little more. 
To fix the maximum amount of content that I can, at least for now.
 2018-06-23 22:15:34 -04:00
Thomas Harte
55ab305dbf Introduces equalisation pulses for the Apple II. 2018-06-23 22:11:39 -04:00
Thomas Harte
52c9f9e89e Merge branch 'master' into CPCJoysticks 2018-06-23 16:43:49 -04:00
Thomas Harte
1c6af279b2 Picks more appropriate cropping now that I'm obeying HSYNC-as-blank. 2018-06-23 16:40:17 -04:00
Thomas Harte
9968342a11 Ensures the pixel collection test is inline with other decisions. 2018-06-23 16:18:33 -04:00
Thomas Harte
c248ecde48 Introduces joystick support for the CPC. 2018-06-21 22:46:10 -04:00
Thomas Harte
154c89e041 Introduces a missing separator. 2018-06-21 20:01:04 -04:00
Thomas Harte
d45f1a793d Introduces composite/RGB selection for the Amstrad CPC. 2018-06-21 20:00:49 -04:00
Thomas Harte
1f8b69a5b0 Attempts to honour the full CRTC 'sync' period, placing blank and the colour burst. 2018-06-20 22:38:54 -04:00
Thomas Harte
acb74185d5 Revokes test logging. 2018-06-19 19:39:09 -04:00
Thomas Harte
1bdc718527 Ensures the MSX reports the proper number of drives. 2018-06-18 22:15:52 -04:00
Thomas Harte
685a80f95b Ensures the Electron Plus 3 properly announces drives to an activity observer. 
Does away with lazy allocation as not all that helpful, and liable to cause complexity.
 2018-06-18 21:49:57 -04:00
Thomas Harte
6a3702a5c7 Reduces space for floating point accuracy errors. 2018-06-16 22:22:40 -04:00
Thomas Harte
7728adfc5a Eliminates repetition of the 10 constant. 2018-06-14 17:23:47 -04:00
Thomas Harte
51da21b844 Formally introduces keyboard-as-joystick for the Mac, and fixes discovered joystick issues. 
Specifically:
* digital to analogue conversion not returning to centre;
* Apple II axes being the wrong way around; and
* Apple II buttons using improper selection logic.
 2018-06-13 19:22:34 -04:00
Thomas Harte
0be19d8de7 Ensures analogue channels which are already charging don't abide by c070. 2018-06-13 18:16:02 -04:00
Thomas Harte
f26e4734b3 Adds use of joystick input in the Apple II. 2018-06-12 22:21:43 -04:00
Thomas Harte
f1b430338e Makes the Apple II a joystick machine. 
Albeit that the values supplied to its joysticks do not currently make it into the emulated state.
 2018-06-11 22:16:32 -04:00
Thomas Harte
2954373115 Introduces an intermediary for digital <-> analogue conversion. 2018-06-11 21:35:03 -04:00
Thomas Harte
42d21ea3a9 Merge branch 'master' into Joystick 2018-06-10 21:08:59 -04:00
Thomas Harte
7d761f145f Corrects typo that mapped Apple II options to the Electron. 2018-06-10 21:05:14 -04:00
Thomas Harte
3ea2a4ccb8 Moves the joystick class towards accepting analogue inputs. 2018-06-10 20:45:52 -04:00
Thomas Harte
69da00fcfb Modifies test slightly for usual RWTS16 location. 
Also eliminates messy print logging.
 2018-06-10 18:41:09 -04:00
Thomas Harte
d576ff1172 Exposes DOS 3.3 acceleration as an option. 
Albeit with an unhelpful label in the macOS GUI for now.
 2018-06-10 18:28:29 -04:00
Thomas Harte
af54666c23 Implements RWTS acceleration. 2018-06-10 17:58:16 -04:00
Thomas Harte
12c59ede09 Adds writeback of track location. 2018-06-09 20:34:12 -04:00
Thomas Harte
b4d0d4fff6 Starts building out some fast-loading infrastructure for DOS 3.3. 2018-06-09 17:29:14 -04:00
Thomas Harte
dde9b73a22 Creates the through-path that will be necessary for RWTS acceleration. 2018-06-09 12:51:53 -04:00
Thomas Harte
fb4bb21bf6 Ensures an objective copy of the bus address is kept, and forwarded to cards. 2018-06-08 20:12:15 -04:00
Thomas Harte
d380595ad4 Unrolls the loops for slightly fewer conditionals. 2018-06-03 07:27:03 -04:00
Thomas Harte
d84b8700a3 Switches the Apple II to one byte per pixel. 
Just trying to get it right for now; optimisation to come.
 2018-06-02 22:03:45 -04:00
Thomas Harte
80b281d9f1 Switches back to whole bytes per pixel, owing to persistent precision problems at 1bpp. 
Also fixes the inaccurately-named `cycles_since_update_`.
 2018-06-02 18:25:00 -04:00
Thomas Harte
69dc3cc4d8 Switches to using the same varying for byte and subpixel selection. 2018-06-01 22:52:29 -04:00
Thomas Harte
0833412df9 Corrects port for ZON-X reads. 2018-06-01 19:45:37 -04:00