Thomas Harte
72e0bfecc1
Edge towards clock-independent line composition.
2023-01-07 14:57:32 -05:00
Thomas Harte
cdf547ac82
Decline to provide synthetic text mode timing on the Mega Drive.
2023-01-07 14:37:06 -05:00
Thomas Harte
dd5b4b484a
Avoid double responsibility for state.
2023-01-07 14:34:33 -05:00
Thomas Harte
56831e02fc
Expand fixed timing constants.
2023-01-07 13:10:51 -05:00
Thomas Harte
5d2d3944ef
Make VRAM access delay a timing property.
2023-01-07 12:48:43 -05:00
Thomas Harte
f9e21df701
Avoid further hard-coded 342s.
2023-01-07 09:13:34 -05:00
Thomas Harte
bb436204f6
Merge branch 'VDPs' of github.com:TomHarte/CLK into VDPs
2023-01-07 09:10:50 -05:00
Thomas Harte
de45536b5c
Elucidate a magic constant, add an extra constexpr.
2023-01-07 09:10:41 -05:00
Thomas Harte
ebc1264c2c
Create a common home for timing information.
2023-01-06 22:39:46 -05:00
Thomas Harte
4875148617
Fill in Mega Drive numbers.
2023-01-05 14:22:51 -05:00
Thomas Harte
7a82b76911
Ensure visibility of memset.
2023-01-05 13:21:03 -05:00
Thomas Harte
27d37f71ec
Generalise and better factor bit reversal and TMS drawing.
2023-01-05 13:18:10 -05:00
Thomas Harte
c4a5a9763e
Minor indentation improvement.
2023-01-02 15:04:50 -05:00
Thomas Harte
a9f97ac871
Fix nothing-to-do test.
2023-01-02 15:04:08 -05:00
Thomas Harte
475440dc70
Update ClockConverter for potential alternative clocks.
2023-01-02 14:59:36 -05:00
Thomas Harte
dc3f8f5e42
These are the three fetchers to implement.
...
They'll look fairly different from the TMS and SMS fetchers, I think, owing to the greater irregularity that comes with the smarter RAM accesses. I might need to play around for a while.
2023-01-01 22:44:06 -05:00
Thomas Harte
459ef39b08
constexpr the TMS palette.
2023-01-01 22:34:07 -05:00
Thomas Harte
27812fd0e2
Separate fetchers into their own header.
2023-01-01 22:26:50 -05:00
Thomas Harte
38eb4d36de
Better explain cumulative nature of @c to_internal.
2023-01-01 22:18:39 -05:00
Thomas Harte
2bd20a0cf8
Add further exposition.
2023-01-01 22:17:21 -05:00
Thomas Harte
da61909ec5
Explain the purpose here.
2023-01-01 21:20:30 -05:00
Thomas Harte
5729ece7bb
Incompletely transitions towards more flexible clock ratios.
2023-01-01 14:20:45 -05:00
Thomas Harte
151f60958e
Relocate the 9918 implementation file.
2023-01-01 14:01:19 -05:00
Thomas Harte
180045ada6
Convert vram_access_delay into a free-standing function.
2023-01-01 13:51:52 -05:00
Thomas Harte
11542e7a7f
Improve const correctness, simplify inheritance.
2023-01-01 13:49:11 -05:00
Thomas Harte
71598250ea
Improve commentary.
2023-01-01 13:41:51 -05:00
Thomas Harte
ffb0b2ce0b
Eliminate runtime duplication of personality.
2022-12-31 21:50:57 -05:00
Thomas Harte
b7c315058f
Also template Base.
2022-12-31 21:47:05 -05:00
Thomas Harte
7d6eac2895
Template the TMS on its personality.
...
Template parameter currently unused, but preparatory to other improvements.
2022-12-31 15:08:33 -05:00
Thomas Harte
d79aac3081
Shuffle the personality enum into the 'public' header.
2022-12-31 15:01:11 -05:00
Thomas Harte
8d5547dc9e
Minor further style improvements.
...
... as I refamiliarise myself.
2022-12-29 22:09:14 -05:00
Thomas Harte
5d89293c92
Improve constness, primarily of reverse_table.
2022-12-29 11:29:19 -05:00
Thomas Harte
711f7b2d75
C++17 makes this a single step.
2022-12-27 22:50:12 -05:00
Thomas Harte
dca8c51384
Prefer to avoid a macro.
2022-12-27 22:36:27 -05:00
Thomas Harte
462b7dcbfa
Add Mega Drive VRAM size.
2022-12-27 22:28:43 -05:00
Thomas Harte
2ab4b351ca
Extend enum.
2022-12-27 22:20:47 -05:00
Thomas Harte
99ced5476f
Add quick clock-rate notes.
2022-12-26 22:56:45 -05:00
Thomas Harte
fea8fecf11
Continue DMA requests if writing, even after a phase mismatch.
2022-09-15 16:46:22 -04:00
Thomas Harte
beca7a01c2
Treat a phase mismatch as ending DMA.
2022-09-15 16:34:06 -04:00
Thomas Harte
2d8e260671
Take a shot at the phase mismatch IRQ.
2022-09-15 16:24:06 -04:00
Thomas Harte
04f5d29ed9
Improve logging, factor out phase_matches per TODO comment.
2022-09-15 16:14:14 -04:00
Thomas Harte
df29a50738
Attempt to support the DMA interface.
2022-08-31 15:33:48 -04:00
Thomas Harte
ea4bf5f31a
Provide card's SCSI ID.
2022-08-23 15:05:36 -04:00
Thomas Harte
8f2e94a1d8
Switch name back to emphasise _async_.
2022-07-16 14:41:04 -04:00
Thomas Harte
bf03bda314
Generalise AsyncTaskQueue, DeferringAsyncTaskQueue and AsyncUpdater into a single template.
2022-07-14 16:39:26 -04:00
Thomas Harte
55af6681af
Avoid unnecessary get_port_input calls.
2021-11-24 17:15:48 -05:00
Thomas Harte
2a7a42ff8f
Add header for assert.
2021-11-24 16:28:18 -05:00
Thomas Harte
0ad1529f3f
Retain delegate bit length for non-self-clocked data.
2021-11-24 16:15:27 -05:00
Thomas Harte
0df8173536
Merge branch 'master' into Amiga
2021-11-24 08:58:03 -05:00
Thomas Harte
f5d3d6bcea
Splits the lowpass filter into push and pull variants.
2021-11-21 15:37:29 -05:00
Thomas Harte