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Author SHA1 Message Date
Thomas Harte
9bbccd89d3 Adds an extended rationale for current implementation. 
Also strips some cruft of prior guesses.
 2019-07-31 23:19:46 -04:00
Thomas Harte
1ae3799aee
Merge pull request #634 from TomHarte/OpenCrash 
Resolves a potential crash at launch on the Mac
 2019-07-31 14:11:58 -04:00
Thomas Harte
260843e5b1 Starts poking at a pure total-based formula. 
On the assumption that any relevant DC offset will fall out in the wash. This causes one 400kb disk to boot in a Macintosh 128kb, another couple to do reasonably well. So it's better than what was here before.
 2019-07-31 12:42:23 -04:00
Thomas Harte
e3f22e5787 This should actually be PWM, I think. 
I'm just unsure of exactly the proper formula, owing to my ignorance on basic electrical engineering. Research ahoy!
 2019-07-30 22:02:41 -04:00
Thomas Harte
2aa308efdd Tweaks magic formulas. 
The computer now at least seeks outward, until this attempt at drive speed calculation fails.
 2019-07-30 16:18:36 -04:00
Thomas Harte
74c18d7861 Attempts a full wiring up of 400kb drive speed. 2019-07-30 15:08:55 -04:00
Thomas Harte
c41cccd9a6 Adds a workaround to display the ROM import banner even from File -> Open... . 2019-07-30 13:07:33 -04:00
Thomas Harte
bba34b28b8
Merge pull request #633 from TomHarte/Deferrer 
Starts to formalise just-in-time handling
 2019-07-30 11:35:13 -04:00
Thomas Harte
d8a41575c8 Picks a better function name. 2019-07-30 10:54:56 -04:00
Thomas Harte
0521de668a Omits redundant qualifier. 
This code can't be anything but `inline`.
 2019-07-29 23:07:02 -04:00
Thomas Harte
12441bddab Tries operator overloading as a workaround. 2019-07-29 23:04:02 -04:00
Thomas Harte
bc25c52683 Although duplicative, resolves function redefinition. 2019-07-29 22:49:02 -04:00
Thomas Harte
eb3fb70ea1 Merge branch 'Deferrer' of github.com:TomHarte/CLK into Deferrer 2019-07-29 21:24:21 -04:00
Thomas Harte
2f90ed1f32 Attempts to reformulate into valid C++. 2019-07-29 21:23:37 -04:00
Thomas Harte
f3dd4b028d Rolls out JustInTime acting to the MSX and ColecoVision. 2019-07-29 21:22:31 -04:00
Thomas Harte
7dcad516bd Undoes incorrect project change. 2019-07-29 17:21:34 -04:00
Thomas Harte
9859f99513 Adds a route to not bumping time. 2019-07-29 17:21:27 -04:00
Thomas Harte
51b7f2777d Adds a route to not bumping time. 2019-07-29 17:17:39 -04:00
Thomas Harte
2f2478d2d3 Implements AsyncJustInTimeActor, experimentally. 2019-07-29 16:38:57 -04:00
Thomas Harte
a43ada82b2 Experiments with a JustInTimeActor in the Master System. 2019-07-29 15:38:41 -04:00
Thomas Harte
5149f290d0 Starts trying to formalise just-in-time execution. 
Which, at least, simplifies Cycle/HalfCycle to Cycle run_for usage via template.
 2019-07-28 21:49:54 -04:00
Thomas Harte
0dc6f08deb
Merge pull request #632 from TomHarte/BINSwitch 
Eliminates the crutch of PlusToo BIN files.
 2019-07-28 16:08:54 -04:00
Thomas Harte
b1f04ed96d Eliminates the crutch of PlusToo BIN files. 
Thereby returning the .bin extension to the various consoles.
 2019-07-28 16:07:16 -04:00
Thomas Harte
cd49b3c89b
Merge pull request #631 from TomHarte/MacPageFlipping 
Removes the video and audio base address latches.
 2019-07-27 22:25:12 -04:00
Thomas Harte
f894d43111 Removes the video and audio base address latches. 
It now seems to me that these take effect immediately.
 2019-07-27 22:23:40 -04:00
Thomas Harte
4033c0c754
Merge pull request #630 from TomHarte/IWMWrites 
Makes various fixes to `Drive` and `Track`.
 2019-07-26 23:41:20 -04:00
Thomas Harte
786b26d23e Adds an admission of incompleteness. 
I really need to figure out the 5-and-3 encoding.
 2019-07-26 23:23:40 -04:00
Thomas Harte
d08d8ed22c Adds a further drift safeguard. 2019-07-26 23:23:01 -04:00
Thomas Harte
b7b62aa3f6 Resolves some type conversion warnings. 2019-07-26 23:20:40 -04:00
Thomas Harte
39d7e3c62c Ensures relative_exponents less than or equal to -32 don't overflow. 2019-07-26 22:19:40 -04:00
Thomas Harte
81b57ecf7c Adds noexcept. 2019-07-26 22:18:40 -04:00
Thomas Harte
572e8b52e1 At the cost of extra storage, attempts to simplify away potential rounding issues around the index hole. 2019-07-26 17:20:32 -04:00
Thomas Harte
9b634472c6 Gets a little more rigorous on "high resolution". 2019-07-26 15:26:51 -04:00
Thomas Harte
d8bc20b1ab Ensures quieter Release behaviour. 2019-07-25 22:55:27 -04:00
Thomas Harte
d2bfd59953 Ensures positional continuity across rotation speed changes. 2019-07-25 22:29:54 -04:00
Thomas Harte
3d20ae47ea Ensures cycles_since_index_hole_ is wrapped to track length. 2019-07-25 21:48:01 -04:00
Thomas Harte
85cf8d89bc Ensures an initial non-zero value. 2019-07-25 21:47:44 -04:00
Thomas Harte
50e954223a
Merge pull request #629 from TomHarte/MinorSpeedImprovements 
Attempts to improve 68000 (and Macintosh) emulation speed
 2019-07-25 10:39:41 -04:00
Thomas Harte
109d5d16bd Withdraws optimisation, for further testing in the future. 2019-07-25 10:33:38 -04:00
Thomas Harte
1672dc5946 Reduces frequency of update_video() calls. 2019-07-25 10:14:52 -04:00
Thomas Harte
5769944918 Shrinks MicroOp struct size from 16 bytes to 4. 2019-07-25 10:14:36 -04:00
Thomas Harte
9ef1211d53 Adds missing header file. 2019-07-24 22:13:32 -04:00
Thomas Harte
f2ae04597f Updates test case. 2019-07-24 22:07:17 -04:00
Thomas Harte
1327de1c82 Slims the Program struct down to 8 bytes total. 2019-07-24 22:02:50 -04:00
Thomas Harte
827c4e172a Cuts a third from the Program struct. 
Observation: [source/destination]_address are always one of the address registers. So you can fit both within a single byte.

Net effect: around a 12% reduction in execution costs, given that this reduces the size of the instructions table from 3mb to 2mb.
 2019-07-24 18:39:36 -04:00
Thomas Harte
c300bd17fa Regularises as many source/destination sets as fit the current setter. 2019-07-24 18:22:44 -04:00
Thomas Harte
0187fd8eae Hides all runtime Program member accesses behind macros. 
... and fixes unit tests.
 2019-07-24 12:01:30 -04:00
Thomas Harte
0469f0240b Moves interrupt level selection outside the loop. 2019-07-23 23:13:03 -04:00
Thomas Harte
4aca6c5ef8 Adds a note of admission here. 2019-07-23 23:03:15 -04:00
Thomas Harte
d69aee4972 Removes stray \n. 2019-07-23 22:17:46 -04:00