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1792 Commits

Author SHA1 Message Date
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