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Author SHA1 Message Date
Thomas Harte
2e7e5ea12b Fleshes out most of a cleaner memory slot layout. 2023-01-12 23:01:11 -05:00
Thomas Harte
0d8c014099 Secondary slot selections are per primary slot. 2023-01-11 13:15:00 -05:00
Thomas Harte
fee82d3baa Fix typo. 2023-01-11 13:14:42 -05:00
Thomas Harte
76ad465030 Also seek the extension ROM for the MSX 2. 2023-01-11 12:56:09 -05:00
Thomas Harte
483ee8a74f Add a catch for the secondary paging register. 2023-01-10 22:24:40 -05:00
Thomas Harte
520ae7f2b2 Pick generic BIOS based on machine type. 2023-01-10 22:15:01 -05:00
Thomas Harte
ae5b81c0ab Add MSX 2 to the ROM catalogue. 2023-01-10 18:17:17 -05:00
Thomas Harte
6bd261b222 Add storage for secondary paging. 2023-01-10 18:07:31 -05:00
Thomas Harte
53bb17c848 Use model as a compile-time MSX configurator. 2023-01-10 14:55:57 -05:00
Thomas Harte
6e0f260478 Add a model field. 2023-01-10 14:52:09 -05:00
Thomas Harte
19e333d117 Merge branch 'master' into SecondarySlots 2023-01-10 14:40:49 -05:00
Thomas Harte
3352feb21b
Merge pull request #1113 from TomHarte/VDPs 
TMS9918 &c: Eliminate hard-coded assumption of 16kb.
 2023-01-10 14:40:38 -05:00
Thomas Harte
73549eb38c Document quite a bit more, to refresh my memory. 2023-01-10 14:40:03 -05:00
Thomas Harte
dbff7592f5
Merge pull request #1112 from TomHarte/VDPs 
Clean up TMS9918-related code.
 2023-01-10 13:40:47 -05:00
Thomas Harte
4d96122884 Eliminate hard-coded assumption of 16kb. 
Clearly I'll have to do something else to support 128k+, probably move the ram pointer?
 2023-01-10 12:38:19 -05:00
Thomas Harte
9085ba4081 Update SMS VDP tests. 2023-01-09 22:58:12 -05:00
Thomas Harte
f1f16d1f9a Clarify and simplify half_cycles_before_internal_cycles. 2023-01-09 22:55:46 -05:00
Thomas Harte
fd14829992 Avoid hand-writing all the various conversions. 2023-01-09 22:34:56 -05:00
Thomas Harte
c0fe88a5bb Apply clock conversion to existing usages of do_external_slot. 2023-01-09 13:54:49 -05:00
Thomas Harte
4d9d684618 Add TODO on dangling hard-coded conversion. 2023-01-08 21:44:25 -05:00
Thomas Harte
a0a835cf10 Export memory size into traits. 2023-01-08 21:37:20 -05:00
Thomas Harte
ef67205ce8 Set pixel count per mode. 2023-01-08 21:31:00 -05:00
Thomas Harte
794adf470b Break assumption that cycles = pixels; fix pixel clocking. 2023-01-08 21:25:22 -05:00
Thomas Harte
8cc20844a9 Clock convert for draw_ calls. 2023-01-08 17:31:08 -05:00
Thomas Harte
b522d65c50 Fix border lengths. 2023-01-08 17:04:19 -05:00
Thomas Harte
cb19c2ffb0 Honour internal-clocked timing constants. 2023-01-08 14:10:06 -05:00
Thomas Harte
5f6ddf8557 Avoid expressing the same thing at different clock rates. 2023-01-08 13:58:12 -05:00
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