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.
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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
7cc5d0b209
Merge pull request #683 from TomHarte/MFPPerformance
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Switch to faster timer implementation; it seems to work.
2019-12-09 19:52:16 -05:00
Thomas Harte
c2646a415f
Switch to faster timer implementation; it seems to work.
2019-12-09 19:23:08 -05:00
Thomas Harte
e1c7a140d0
Merge pull request #682 from TomHarte/AddressError
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ST: Adds some initial bus error logic, plus some optimisations.
2019-12-08 22:53:40 -05:00
Thomas Harte
7cd11ecb7f
Adds necessary #include for assert.
2019-12-08 22:43:39 -05:00
Thomas Harte
4dd235f677
Adds supervisor/user to logged flags in trace mode.
2019-12-08 22:39:10 -05:00
Thomas Harte
a7cfb840ef
Adds but presently disables a diagnostic for border elimination.
2019-12-08 22:34:42 -05:00
Thomas Harte
acfe2c63b8
Adds an assert to verify the interrupt line is clear after a full reset.
2019-12-08 22:34:19 -05:00
Thomas Harte
b192381928
Implements a fuller reset, takes a run at the overran flag.
2019-12-08 21:20:06 -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
407cc78c78
Extends to offer simpler 8-bit access handling.
2019-12-08 20:19:44 -05:00
Thomas Harte
4536c6a224
Resolves printf type errors.
2019-12-08 11:56:05 -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
332f0d6167
Ensures MSAs are explicitly read-only.
2019-12-08 11:52:15 -05:00
Thomas Harte
08a27bdec7
NTSC frame length is correct; removes TODO.
2019-12-08 11:51:12 -05:00
Thomas Harte
288cabbad1
Merge pull request #680 from TomHarte/EventCountReload
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Implements MFP timer reload when in event counting mode.
2019-11-19 22:54:34 -05:00
Thomas Harte
7ff57f8cdf
Starts to flesh out documentation.
2019-11-19 22:32:07 -05:00
Thomas Harte
06edeea866
Adds reload during event count mode.
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Plus a helpful bit of TODO.
2019-11-19 22:24:32 -05:00
Thomas Harte
3c77d3bda0
Merge pull request #679 from TomHarte/OffByOne
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Corrects off-by-one error in the ST's vertical state machine
2019-11-19 22:02:41 -05:00
Thomas Harte
72cb3a1cf6
Integrates basic unit test for Atari ST video event prediction.
2019-11-19 21:54:13 -05:00
Thomas Harte
e0ceab6642
Pivots towards looking at Timer B as a cause of in-frame inaccuracy.
2019-11-19 21:52:50 -05:00
Thomas Harte
894066984c
Moves beginning and end of vertical sync to what I now believe is its proper place.
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At least one demo now successfully opens the top border.
2019-11-19 20:13:47 -05:00
Thomas Harte
c91495d068
Merge pull request #678 from TomHarte/DEDelay
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Introduces a 28-cycle delay on DE propagation
2019-11-18 23:53:46 -05:00
Thomas Harte
e787c03530
Slightly shortens NTSC frame.
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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
b12136691a
Corrects comment.
2019-11-18 23:46:33 -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
0ce5057fd9
Attempts to factor in event counting direction.
2019-11-18 22:37:20 -05:00
Thomas Harte
ade8df7217
Permits a delay on DE propagation back to the CPU. Plus tests.
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Currently set at 28 cycles, but I don't know.
2019-11-18 22:12:24 -05:00
Thomas Harte
b98703bd5b
Corrects lack of const.
2019-11-18 22:11:52 -05:00
Thomas Harte
82c984afa4
Switches the joysticks around.
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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
25da8b7787
Merge pull request #677 from TomHarte/SyncDisturbance
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Corrects accidental dropping of pixel residue.
2019-11-17 18:47:27 -05:00
Thomas Harte
253dd84109
Corrects accidental dropping of pixel residue.
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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
9d07765823
Ensures proper precedence of * over %.
2019-11-14 23:19:31 -05:00
Thomas Harte
11de0e198f
Removes dead travis.yml.
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Travis never worked; GitHub actions do; that's CI.
2019-11-14 19:58:24 -05:00
Thomas Harte
f16f0897d5
Merge pull request #676 from TomHarte/BuildWorkflow
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Adds continuous integration via GitHub actions.
2019-11-14 13:59:52 -05:00
Thomas Harte
3d4d45ef62
Remove redundant 'build'
2019-11-14 13:54:24 -05:00
Thomas Harte
04c4f5f321
Removes syntax violating colon.
2019-11-14 13:53:24 -05:00
Thomas Harte
fa900d22e8
Adds a more manageable title.
2019-11-14 13:52:24 -05:00
Thomas Harte
aee2890b25
Switch to title case.
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This seems to fit better with the fixed named steps.
2019-11-14 13:50:03 -05:00
Thomas Harte
40e1ec28fb
Attempt sudo.
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Sorry for the noise; there's no obvious better way to test this stuff.
2019-11-14 13:42:56 -05:00
Thomas Harte
c6e2b1237c
Add build workflow
2019-11-14 13:40:06 -05:00
Thomas Harte
efdd27a435
Merge pull request #675 from TomHarte/STFileFormat
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Adds support for .ST files.
2019-11-12 23:32:47 -05:00
