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1883 Commits

Author SHA1 Message Date
Thomas Harte
24340d1d4f Resolves fetch errors. 2020-02-09 17:04:49 -05:00
Thomas Harte
085529ed72 Makes the shifter behaviour conform to its documentation. 2020-02-02 17:26:39 -05:00
Thomas Harte
ff39f71ca0 Eliminates meaningless constants from the Macintosh video's CRT setup. 2020-01-30 23:29:04 -05:00
Thomas Harte
019474300d Centralises responsibility for picking irrelevant numbers for a computer-style monitor. 2020-01-30 23:26:02 -05:00
Thomas Harte
af976b8b3d Eliminates modulus operation per ROM access. 2020-01-30 23:09:24 -05:00
Thomas Harte
f3db1a0c60 Eliminates ad hoc scheduling for delayed DE -> LOAD. 2020-01-29 22:50:22 -05:00
Thomas Harte
ce28213a5e [Mostly] unifies deferral process. 2020-01-29 22:46:08 -05:00
Thomas Harte
f9ce50d2bb Adds some debugging `asserts. 2020-01-29 22:45:44 -05:00
Thomas Harte
f0a6e0f3d5 Splits out the queue management stuff from queue+action. 
Temporarily breaks ST video in the endeavour.
 2020-01-29 22:18:41 -05:00
Thomas Harte
0e29c6b0ab On further reflection, I think events should occur after the running period. 
I'm testing this now for sanity in 2/4bpp mode.
 2020-01-28 23:26:37 -05:00
Thomas Harte
c5edc879b6 Switches back to testing the monochrome monitor. 2020-01-28 22:12:57 -05:00
Thomas Harte
65309e60c4 Corrects sequence point generation by allowing for hsync_end != end of line. 2020-01-28 20:38:20 -05:00
Thomas Harte
2c0cab9e4d Adds line length latching as a line event. 2020-01-28 20:22:37 -05:00
Thomas Harte
b1ff031b54 Fixes runtime test. 2020-01-27 23:41:08 -05:00
Thomas Harte
7e8405e68a Makes 72Hz horizontal sync independently relocatable. 
... and moves and shortens it, based on my guesswork as to requirements.
 2020-01-27 23:40:01 -05:00
Thomas Harte
c8fd00217d Resolves loss of horizontal resolution in 1bpp mode. 2020-01-27 23:08:28 -05:00
Thomas Harte
9d340599a6 Towards ST 1bpp support: puts vsync in an appropriate location, starts experimenting with proper CRT timings. 2020-01-27 23:00:30 -05:00
Thomas Harte
7316a3aa88 Merge branch 'master' into FinalOverride 2020-01-26 23:42:25 -05:00
Thomas Harte
b514756272 Adds the option to run machines at a multiple of their real speeds. 
Exposed to SDL users only, for now.
 2020-01-26 13:25:23 -05:00
Thomas Harte
79bb0f8222 Updates comment. 2020-01-26 11:36:06 -05:00
Thomas Harte
43bf6aca67 Corrects reported scan status for the Amstrad CPC. 2020-01-25 23:46:18 -05:00
Thomas Harte
03d23aad41 Corrects reported ZX80/81 scan status. 2020-01-25 23:27:09 -05:00
Thomas Harte
294e09f275 All these 'override's can be 'final's. 
At least for the purpose of being communicative. I doubt there's much to gain in terms of compiler output — the DiskImageHolder can avoid some virtual lookups but nothing else leaps out.
 2020-01-23 22:57:51 -05:00
Thomas Harte
ba516387ba In all these instances, final => override. So no need to repeat myself. 2020-01-23 22:35:39 -05:00
Thomas Harte
9136917f00 Enables the Oric for 50/60Hz mode switching, inventing PAL60 for the purpose. 2020-01-23 22:14:02 -05:00
Thomas Harte
6802318784 Removes audio_queue_.flush() calls; I don't think I really need to block. At least, not usually. 2020-01-23 20:13:16 -05:00
Thomas Harte
428d141bc9 Factors out the logic behind the Atari 2600's frequency switching. 2020-01-23 20:12:44 -05:00
Thomas Harte
a86fb33789 Ensures that the ColecoVision, MSX and Master System fully flush. 2020-01-22 22:57:16 -05:00
Thomas Harte
beefb70f75 Adds vertical sync as something that can be run_until. 2020-01-22 22:20:56 -05:00
Thomas Harte
8404409c0d Causes the Atari 2600 to obey normal flush semantics. 
This stuff is going to become more important with run_until.
 2020-01-22 22:05:51 -05:00
Thomas Harte
a71c5946f0 Ensures proper manipulation of scan_statuses, leading to the correct result out of a CRTMachine. 
Possibly with the exception of the TMS, as I appear to have uncovered an unrelated issue there.
 2020-01-21 22:28:25 -05:00
Thomas Harte
d97a073d1b Adds the necessary routine for all machines to be able to respond to get_scan_status. 
They all just as the CRT, as all are currently based on the CRT. Which doesn't currently know the total clock rate it would need to in order properly to scale the answer to the question. Further thought coming.
 2020-01-20 21:45:10 -05:00
Thomas Harte
3c760e585a Switches to accepting a bit mask of events to run_until. 2020-01-20 16:08:21 -05:00
Thomas Harte
cb61e84868 Starts building out higher-level run_until functionality. 
Specifically: you can now run until the next set of speaker samples has been delivered.
 2020-01-20 12:12:23 -05:00
Thomas Harte
8349005c4b Adds CRTMachine::run_until, which will run until a condition is true. 
I want to get to being able to say "run until the beam is 60% of the way down", "run until a new packet of audio has been delivered", etc.
 2020-01-19 23:52:47 -05:00
Thomas Harte
d30f83871d Corrects Jasmin activity light. 2020-01-16 22:59:43 -05:00
Thomas Harte
efd684dc56 Opts the BD-500 in for modified Shugart RDY. 
Hopefully this is correct. I'm presently mystified as to other options.
 2020-01-16 21:34:57 -05:00
Thomas Harte
1972ca00a4 Fixes quick-NTSC-avoidance fix. 
I suspect this is very temporary, but here it is.
 2020-01-16 00:01:16 -05:00
Thomas Harte
c606931c93 Ensures a safe default-selected drive. 2020-01-15 23:56:44 -05:00
Thomas Harte
93cecf0882 Ensures no possible initial NTSC, removes printfs. 2020-01-15 23:47:45 -05:00
Thomas Harte
aac3d27c10 Adds activity indicators for the BD-500 and Jasmin. 
Also slightly cleans up DiskController a little further.
 2020-01-15 23:39:15 -05:00
Thomas Harte
91fae86e73 Factors out paging, implements a bit more of the BD500. 
That is, enough seemingly fully to work, if I force the drive to report ready.
 2020-01-15 23:15:39 -05:00
Thomas Harte
f5c194386c Ties head load to ready. 
BD-DOS no longer perpetually retries.
 2020-01-14 23:45:36 -05:00
Thomas Harte
62c3720c97 Adds status register and shout-outs on other address access. 2020-01-14 23:24:11 -05:00
Thomas Harte
f258fc2971 Adds enough of a BD500 for the boot sector seemingly to load. 2020-01-14 23:15:27 -05:00
Thomas Harte
6b84ae3095 Makes the Microdisc also a DiskController, and simplifies delegate interface. 2020-01-14 22:53:27 -05:00
Thomas Harte
5dd8c677f1 Factors out from the Jasmin the stuff that I'm going to need to repeat for the BD-500. 2020-01-14 22:23:00 -05:00
Thomas Harte
3ced31043a Makes Jasmin autoboot optional, adds a Jasmin reset key, adds the Jasmin to File -> New... . 
Also finally implements KeyNMI.
 2020-01-05 21:57:33 -05:00
Thomas Harte
7361e7ec34 Fixed: the issue was failing to propagate motor control. 
Also it seems to be incorrect to have the Jasmin paged at initial boot.
 2020-01-05 21:35:20 -05:00
Thomas Harte
533729638c It seems like Jasmin paged in at boot, and button = page back in and reset works? 
At least, that gets me a 'boot failed' error. Which is something.
 2020-01-05 20:34:15 -05:00
Thomas Harte
9f30be1c13 Attempts to implement most of a Jasmin disk interface. 
With one obvious omission: there's no way to start it? The real interface had a dedicated button, but I don't yet know what that button did. Research needed.
 2020-01-05 20:05:55 -05:00
Thomas Harte
c1bae49a92 Standardises on read and write for bus accesses. 
Logic being: name these things for the bus action they model, not the effect they have.
 2020-01-05 13:40:02 -05:00
Thomas Harte
e4349f5e05 Slightly clarifies logic. 2020-01-04 21:32:34 -05:00
Thomas Harte
7b2777ac08 Sorts cases into order; adds copious audio mirrors. 2020-01-04 21:06:21 -05:00
Thomas Harte
0fbcbfc61b Switches to more idiomatic address listing. 2020-01-04 20:35:47 -05:00
Thomas Harte
3ab4fb8c79 Enables an assumption of partial address decoding at the ACIA and PSG. 2020-01-04 17:27:55 -05:00
Thomas Harte
19ddfae6d6 Adds Joystick key code mode, ensures events aren't posted in interrogation mode. 
This should fix Turrican due to the latter change; I'm not aware of software that uses the former.
 2020-01-04 09:45:59 -05:00
Thomas Harte
414b0cc234 Reintroduces sync write delay. 2020-01-02 23:36:11 -05:00
Thomas Harte
134e828336 Updates note to self. 2020-01-02 23:33:35 -05:00
Thomas Harte
455e831b87 Corrects bug whereby changing pixel mode mid-line will produce an improper amount of data. 2020-01-02 23:18:21 -05:00
Thomas Harte
42ccf48966 Judging by Pompey Pirates Menu 88, vsync should occur a line earlier, ending during line 0. 2020-01-02 20:16:28 -05:00
Thomas Harte
2f8078db22 Switches to should_log as a global when I'm hacking about. 2020-01-02 20:15:48 -05:00
Thomas Harte
23ed9ad2de Corrects application of negative relative scale. 2020-01-01 13:22:21 -05:00
Thomas Harte
017681a97c Now honours permitted mouse range. 2020-01-01 12:48:38 -05:00
Thomas Harte
90b899c00e Attempts to implement absolute mouse positioning mode. 
Along with mouse direction.
 2020-01-01 12:29:33 -05:00
Thomas Harte
c11fe25537 Merge branch 'master' into EnchantedWoods 2019-12-30 23:32:45 -05:00
Thomas Harte
0a12893d63 Shunts vsync back down to top of frame. 
It's guess after guess, basically.
 2019-12-30 23:01:31 -05:00
Thomas Harte
8e777c299f Switches to latching video interrupts until acknowledged. 
Seems to fix Cisco Heat, at least. I have no idea whether I'm latching the correct thing, whether IACK should clear both or only one, etc.
 2019-12-30 23:00:55 -05:00
Thomas Harte
e23d1a2958 Restores vsync active. 2019-12-29 22:03:36 -05:00
Thomas Harte
6449403f6a Corrects pending_events_ test for sequence points. 
Simplifies around as possible.
 2019-12-29 21:53:45 -05:00
Thomas Harte
c8fe66092b Attempts to correct insertion logic (and mostly bypasses it). 2019-12-29 21:42:41 -05:00
Thomas Harte
b33218c61e Fixes reload test, which really needs to sense the CRT-headed vsync output. 
i.e. not the one heading back to the CPU.
 2019-12-29 20:55:34 -05:00
Thomas Harte
8ce26e7182 Adds a delay on vsync visibility (i.e. as to generating an interrupt). 2019-12-29 19:03:08 -05:00
Thomas Harte
47068ee081 Ensures visible hsync end generates a sequence point. 2019-12-29 17:51:50 -05:00
Thomas Harte
214b6a254a Adds a delay on visibility of the hsync signal, and a test on address reload. 2019-12-29 17:37:09 -05:00
Thomas Harte
93f6964d8a Introduces some preliminary line length unit tests. 
Thereby fixes one potential issue with load_ toggling.
 2019-12-28 22:50:34 -05:00
Thomas Harte
13f11e071a Simplifies border colour change propagation. 
I'm not sure it was even technically correct as was.
 2019-12-28 10:45:10 -05:00
Thomas Harte
f7825dd2a2 Pulls out address reload position as a separate constant. 2019-12-28 10:36:50 -05:00
Thomas Harte
a9d1f5d925 Pulls out address reload as something I can position independently. 
Sadly receding it by 3 did not have the effect I was hoping for, of receding Enchanted Land's first register tweaking.
 2019-12-27 23:47:19 -05:00
Thomas Harte
2757e5d600 Removes untrue comment. 2019-12-27 22:51:11 -05:00
Thomas Harte
5026de9653 Rejigs the video stream to ensure shifter really is continuous. 
... and definitively to avoid potential buffer overruns. Or, at least, to have a mechanism in place definitively to avoid them. Which will be tested and debugged as necessary.

Also simplifies the colour burst and border/pixels selection logic.
 2019-12-27 22:47:34 -05:00
Thomas Harte
5fa8e046d8 It's inaccurrate to call this _the_ shifter. So don't. 2019-12-27 19:03:10 -05:00
Thomas Harte
de43e86310 Permits Vic-20 memory to be specified in banks; adds recognition of TheC64-style file tags to specify them. 2019-12-26 22:49:48 -05:00
Thomas Harte
a9a92de954 Adds a bunch of shout-outs for unimplemented behaviour. 2019-12-25 15:32:33 -05:00
Thomas Harte
a8ba3607b7 Adds (and disables) a minor additional piece of logging. 2019-12-24 21:43:39 -05:00
Thomas Harte
5068328a15 Fixes debugging output. 2019-12-24 19:15:58 -05:00
Thomas Harte
b2bed82da6 Switches to standard logging. 2019-12-23 22:00:40 -05:00
Thomas Harte
0dae608da5 Embraces std::make_[unique/shared] in place of .reset(new . 2019-12-23 21:31:46 -05:00
Thomas Harte
5456a4a39d Eliminates static where constexpra aren't class members; adds some if constexprs for clarity. 2019-12-22 13:42:24 -05:00
Thomas Harte
274867579b Deploys constexpr as a stricter const. 2019-12-22 00:22:17 -05:00
Thomas Harte
05d77d3297 Also deploys make_unique/shared to avoid type repetition. 2019-12-21 23:52:04 -05:00
Thomas Harte
e5440a4146 Hacks in a colour burst. 
With a major flaw: it's implicit. I think I need a minor rethink of various components here.
 2019-12-20 23:49:38 -05:00
Thomas Harte
47508d50a7 Wires through a composite video option for the ST. 
Which is great and all, except that I've not yet inserted a colour burst. So it's monochrome.
 2019-12-20 20:49:14 -05:00
Thomas Harte
3d83f5ab49 Ensures a proper size handoff and implements a ripple feature I happened to find a forum post about. 2019-12-19 22:58:07 -05:00
Thomas Harte
0007dc23b3 Eliminates bit 0 of the DMA address. 2019-12-19 22:44:21 -05:00
Thomas Harte
ed7f171736 Moves address reload to end of vertical sync. 
I have no information as to when it should be, so this is as valid a guess as any other.
 2019-12-19 22:20:43 -05:00
Thomas Harte
0e066f0f70 Removes 'done' TODO. 
For certain values of done.
 2019-12-19 22:19:59 -05:00
Thomas Harte
d85ae21b2f Adds an explicit declaration of chip type to all AY users. 2019-12-18 19:28:41 -05:00
Thomas Harte
c00ae7ce6a Adds a one-cycle delay on frequency changes. 2019-12-13 19:57:54 -05:00
Thomas Harte
4bcf217324 Ensures delayed loading isn't interrupted by blank, hsync. 2019-12-12 23:20:28 -05:00
Thomas Harte
f6f2b4b90f Removes double DE edge test. 2019-12-12 22:50:35 -05:00
Thomas Harte
95b5db4d87 Tweaks timings yet further, adds a FIFO reset. 
The accuracy of this may require further research.
 2019-12-11 23:22:20 -05:00
Thomas Harte
de4403e021 Corrects blank timing. 2019-12-10 22:17:57 -05:00
Thomas Harte
0a405d1c06 Introduces a latency between DE and load. 2019-12-10 21:24:15 -05:00
Thomas Harte
768b3709b8 Corrects audio clock rate. 2019-12-10 20:25:27 -05:00
Thomas Harte
a7cfb840ef Adds but presently disables a diagnostic for border elimination. 2019-12-08 22:34:42 -05:00
Thomas Harte
c785797da6 Adds a warning for unhandled reset. 2019-12-08 21:01:30 -05:00
Thomas Harte
0408592ada Switches to byte buffers and seeks to reduce unnecessary video flushing. 2019-12-08 20:20:13 -05:00
Thomas Harte
0ed87c61bd Introduces an explicit area of floating bus, starts adding bus errors. 2019-12-08 11:52:43 -05:00
Thomas Harte
08a27bdec7 NTSC frame length is correct; removes TODO. 2019-12-08 11:51:12 -05:00
Thomas Harte
894066984c Moves beginning and end of vertical sync to what I now believe is its proper place. 
At least one demo now successfully opens the top border.
 2019-11-19 20:13:47 -05:00
Thomas Harte
e787c03530 Slightly shortens NTSC frame. 
Either: (i) 263 is incorrect; or (ii) my logic as to frame height is incorrect. Given that the horizontal side of things is really well documented, I'm currently guessing (i). Research to do.
 2019-11-18 23:47:27 -05:00
Thomas Harte
c04d2f6c6e Restricts DTack delay to RAM and Shifter accesses. 2019-11-18 22:57:13 -05:00
Thomas Harte
6990abc0d3 Tweaks selected output mode when both BPP bits are set. 2019-11-18 22:56:40 -05:00
Thomas Harte
ade8df7217 Permits a delay on DE propagation back to the CPU. Plus tests. 
Currently set at 28 cycles, but I don't know.
 2019-11-18 22:12:24 -05:00
Thomas Harte
82c984afa4 Switches the joysticks around. 
Thereby finally allowing me to control mode games.
 2019-11-18 20:02:27 -05:00
Thomas Harte
1202b0a65f Establishes a pipeline for delayed public state visibility. 2019-11-17 23:28:00 -05:00
Thomas Harte
facc0a1976 Amps up the documentation. 2019-11-17 21:28:51 -05:00
Thomas Harte
253dd84109 Corrects accidental dropping of pixel residue. 
Specific issue: the repeated (start_column != end_column) test, which can no longer be correct if start_column has been incremented in the (x_&7) test.

The visible effect was to omit pixels from the output wave, which also affected observed sync timing.
 2019-11-17 18:34:13 -05:00
Thomas Harte
2c4f372872 Adds support for the .ST file format. 2019-11-12 23:23:14 -05:00
Thomas Harte
f4cfca0451 Merge branch 'master' of github.com:TomHarte/CLK 2019-11-12 19:38:44 -05:00
Thomas Harte
eb287605f7 Switches to a default of TOS 1.04. 2019-11-12 19:38:30 -05:00
Thomas Harte
6a82c87320 Withdraws border optimisation temporarily; I think I may be onto an output bug here. 2019-11-12 19:33:13 -05:00
Thomas Harte
f0478225f0 Adjusts logic to reduce number of output spans. 2019-11-12 19:30:28 -05:00
Thomas Harte
c6f6bc68e1 Undoes non-insertion of media. 2019-11-10 21:52:06 -05:00
Thomas Harte
ab34fad8ca Introduces a cleaner, separated shifter. 2019-11-10 21:39:40 -05:00
Thomas Harte
7ae0902103 Adds additional joystick commands to the dispatcher. 2019-11-09 20:10:54 -05:00
Thomas Harte
8e9428623e Adds joystick events to the Atari ST. 2019-11-09 18:39:22 -05:00
Thomas Harte
2c25135d8a Fixes const correctness for joystick machines; the ST is now one such. 2019-11-09 18:19:05 -05:00
Thomas Harte
860837d894 Corrects: KeyPad -> Keypad. Also fleshes out Atari ST keyboard mapping. 2019-11-09 18:02:14 -05:00
Thomas Harte
0204003680 Resolves GCC warnings. 2019-11-09 16:12:37 -05:00
Thomas Harte
77ef7dc8fc Shuffles ST and 2600 into a common parent. 2019-11-09 15:31:41 -05:00
Thomas Harte
e3abbc9966 Renames what didn't end up being a whole SerialPort. 2019-11-09 15:21:51 -05:00
Thomas Harte
70c6010fe0 Expands visible area and adds a few more safety barriers. 2019-11-09 15:00:42 -05:00
Thomas Harte
45375fb5d0 Makes endian aware. 2019-11-09 09:48:59 -05:00
Thomas Harte
d2324e413d Clarifies ownership of bpp-has-changed test. 2019-11-09 00:10:59 -05:00
Thomas Harte
e0c15f43bb Avoids massive over-flushing of pixel buffers. 2019-11-09 00:05:02 -05:00
Thomas Harte
8b0d550b81 Attempts to move vertical sync out to cycle 30. 2019-11-08 22:18:47 -05:00
Thomas Harte
d1259f829e Moves vertical state decisions back to cycle 502. 2019-11-08 21:42:05 -05:00
Thomas Harte
7caef46c05 Switches back to hsync for interrupts; corrects current address reads. 2019-11-08 21:25:28 -05:00
Thomas Harte
6902251d8b Fixed: returns video address in bytes, not words. 2019-11-08 20:47:08 -05:00
Thomas Harte
0b683b0360 Adds some sanity checks. 2019-11-08 20:46:24 -05:00
Thomas Harte
5d5dc79f2c Corrects raster race condition with CPU. 2019-11-07 23:27:05 -05:00
Thomas Harte
b7c407be10 The palette is meant to be read/write. 2019-11-07 23:11:06 -05:00
Thomas Harte
f45798faf0 Corrects initial safe value of line_length_. 2019-11-07 22:53:26 -05:00
Thomas Harte
7c66d7a13c Corrects sync and line-length latch timings. 2019-11-07 22:53:04 -05:00
Thomas Harte
5e1570258d I think the horizontal interrupt is blank, not sync. 2019-11-07 22:00:50 -05:00
Thomas Harte
fc8021c0b0 Adds a centre crop. 2019-11-07 20:02:45 -05:00
Thomas Harte
c9cd56915e Corrects typo that was adding an extra line of PAL video. 2019-11-07 19:55:49 -05:00
Thomas Harte
1fd19c5786 Attempts to add proper bus timing. 2019-11-07 19:55:00 -05:00