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Author SHA1 Message Date
Thomas Harte
c7a5b054db There's no TODO here; overflow is always 0 for a 16x16 multiply. 
... and the original 68000 doesn't support 32x32 multiplies.
 2020-01-03 22:44:19 -05:00
Thomas Harte
ca12ba297b Renames all files that test multiple opcodes; introduces DIV and MUL tests. 2020-01-03 22:43:24 -05:00
Thomas Harte
7abf527084
Merge pull request #712 from TomHarte/MercsTweaks 
Corrects vsync placement and BPP-change pipeline flushing.
 2020-01-02 23:50:30 -05:00
Thomas Harte
c0b5bfe726 Ensure no possible return without value. 2020-01-02 23:43:53 -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
617e0bada9 Adds some minor extra testing. Highly duplicative, to be honest. 2020-01-02 23:14:05 -05:00
Thomas Harte
7dea99b1cc Update comment, for sense. 2020-01-02 23:13:12 -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
ea45ae78d1
Merge pull request #711 from TomHarte/MoreTests 
Introduces further comparative tests, prompting a new CHK fix.
 2020-01-01 20:12:07 -05:00
Thomas Harte
cb7d6c185c Further expands test coverage. 2020-01-01 20:00:37 -05:00
Thomas Harte
5be30b1f7b Introduces further comparative tests, prompting a new CHK fix. 
Specifically: how to set N when both is_under and is_over are true, and to eliminate a failure fully to prefetch in the longer addressing modes.
 2020-01-01 19:11:36 -05:00
Thomas Harte
0bf1a87f4c
Merge pull request #710 from TomHarte/STOP 
Ensure that an interrupt from a STOP doesn't return to the STOP.
 2020-01-01 15:00:11 -05:00
Thomas Harte
b184426f2b Ensure that an interrupt from a STOP doesn't return to the STOP. 2020-01-01 14:51:47 -05:00
Thomas Harte
2456fb120d
Merge pull request #709 from TomHarte/MoreMouse 
Adds Atari ST mouse support for absolute positioning and inverted scales.
 2020-01-01 13:56:25 -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
153f60735d Banishes redefined macro warning. 2020-01-01 12:38:30 -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
5ce8d7c0e5
Merge pull request #708 from TomHarte/KeyboardLogs 
Adds necessary logging for further IKYB work.
 2019-12-30 23:41:38 -05:00
Thomas Harte
c11fe25537 Merge branch 'master' into EnchantedWoods 2019-12-30 23:32:45 -05:00
Thomas Harte
c4edd635c5
Merge pull request #707 from TomHarte/STGraphicsAgain 
Further improves the ST graphics subsystem
 2019-12-30 23:31:21 -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
09513ec14c Gets explicit about constexpr expectations here. 2019-12-30 22:58:19 -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
5361ee2526 Adds specific Union Demo test. 2019-12-29 17:48:43 -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
ec9357e080
Merge pull request #706 from TomHarte/Vic20Flags 
Permits Vic-20 memory to be specified in banks;
 2019-12-26 23:04:56 -05:00
Thomas Harte
f8dd33b645 Adds necessary header for strcmp. 2019-12-26 22:53:09 -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
314973a5ef
Merge pull request #704 from TomHarte/RTR 
Corrects implementation of RTR
 2019-12-25 20:47:21 -05:00
Thomas Harte
d26ce65236 Introduces an RTR test. 2019-12-25 19:50:12 -05:00
Thomas Harte
1de4f179c0 Adds more thorough comment on the bus program used. 2019-12-25 19:49:49 -05:00
Thomas Harte
3cb5684d95 Fixes RTR: the whole top half of the SR should be preserved. 
Specifically, the 68000 Reference Manual says: "The supervisor portion of the status register is unaffected." Clearly when I first read that I misread it as the supervisor _flag_ (rather than _portion_) should be preserved.
 2019-12-25 19:49:20 -05:00
Thomas Harte
a9a92de954 Adds a bunch of shout-outs for unimplemented behaviour. 2019-12-25 15:32:33 -05:00