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5,247 Commits 8 Branches 121 Tags 496 MiB
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1535 Commits

Author SHA1 Message Date
Thomas Harte
bbd4e4d3dc Enhances memory map fidelity to allow for ROM holes on the Mac Plus. 
This is how the ROM detects the difference between the Plus and the 512ke, it seems.
 2019-08-10 23:53:34 -04:00
Thomas Harte
bac0461f7f Switches the drive-speed accumulator to the delegate pattern. 
This allows the Macintosh to ensure that the IWM is kept up just-in-time with drive speed changes.
 2019-08-07 21:39:23 -04:00
Thomas Harte
f26a200d78 Switches to a JustInTimeActor to wrap the IWM. 
Also simplifies potential future usage of the IWM template.
 2019-08-07 21:28:02 -04:00
Thomas Harte
0e293e4983 Relocates RAM delay test in order to scrape out a minor performance win. 2019-08-03 21:46:45 -04:00
Thomas Harte
478f2533b5 Corrects 68000 address bus during interrupt acknowledge. 
All unused bits should be 1, not 0.
 2019-08-03 15:38:36 -04:00
Thomas Harte
a07488cf1b Introduces the Mac Plus memory map. 
Albeit with no SCSI support yet.
 2019-08-02 22:26:40 -04:00
Thomas Harte
d67c5145c0 Introduces RAM access delays. 2019-08-02 22:12:34 -04:00
Thomas Harte
5e76d593af Switches to table-based address decoding. 2019-08-02 21:30:04 -04:00
Thomas Harte
b93f9b3973 Distinguishes time advancement from bus response. 2019-08-02 19:48:41 -04:00
Thomas Harte
96005261c7 Adds activity lights for Macintosh disk activity. 
Prompting a quick fix to drives not spinning down.
 2019-08-02 16:26:23 -04:00
Thomas Harte
c8177af45a Introduces missing implementation file. 2019-08-02 16:26:08 -04:00
Thomas Harte
97eff5b16d Formally distinguishes Macintosh keys from virtual keys. 
Also: adds mappings for keypad keys, and corrects a couple of
long-standing capitalisation errors in my virtual key set.
 2019-08-02 16:15:34 -04:00
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
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
f3dd4b028d Rolls out JustInTime acting to the MSX and ColecoVision. 2019-07-29 21:22:31 -04:00
Thomas Harte
9859f99513 Adds a route to not bumping time. 2019-07-29 17:21:27 -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
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
d8bc20b1ab Ensures quieter Release behaviour. 2019-07-25 22:55:27 -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
0469f0240b Moves interrupt level selection outside the loop. 2019-07-23 23:13:03 -04:00
Thomas Harte
fcee7779b0 Inserts missing spaces. 2019-07-22 23:11:37 -04:00
Thomas Harte
b4191b6225 Corrects DiskII boot ROM CRCs and improves corresponding declarations. 2019-07-22 23:07:23 -04:00
Thomas Harte
dbee37ab34 Provides extended ROM details for the VIC-20 and Oric. 2019-07-22 22:15:44 -04:00
Thomas Harte
2432151bf8 Puts machine name into ROMMachine::ROM. 
Also switches to idiomatic exit codes.
 2019-07-22 21:14:21 -04:00
Thomas Harte
b2a6682798 Adds extended ROM information for the ZX80 and '81. 2019-07-20 22:46:49 -04:00
Thomas Harte
f3aac603f8 Adds extended Introduces extended ROM details for the C1540, Electron, Master System and MSX. 2019-07-20 21:30:37 -04:00
Thomas Harte
712cb473f7 Adds extended ROM information for the CPC and ColecoVision. 2019-07-20 17:07:59 -04:00
Thomas Harte
3c68a5ca65 Enhances the amount of ROM information posted by the Apple machines. 2019-07-20 16:08:40 -04:00
Thomas Harte
20670bab2f Expands information included in ROM load requests. 2019-07-19 22:35:22 -04:00
Thomas Harte
b9a34bee51 Substitutes a more efficient inner loop for audio generation. 2019-07-17 14:54:06 -04:00
Thomas Harte
22ee51c12c Corrects clocking issues around audio, and cuts down queue costs. 2019-07-17 14:41:36 -04:00
Thomas Harte
59b5dfddec Added logic to allow a second disk to be inserted, at least. 2019-07-11 23:03:02 -04:00
Thomas Harte
cac97a9663 Devolves drive responsibility. 2019-07-10 22:39:56 -04:00
Thomas Harte
2ccb564a7b Throws some extra logging into place, to test the IWM changeover. 2019-07-10 21:39:45 -04:00
Thomas Harte
d1d0430fce Eliminates the SonyDrive class. 2019-07-10 17:38:05 -04:00
Thomas Harte
be251d6b03 Begins substituting the DoubleDensityDrive for the Sony. 2019-07-10 16:24:48 -04:00
Thomas Harte
c4ab0bb867 Starts sketching out an interface for IWM drives, eliminating a dangling use of unsigned as it goes. 2019-07-10 16:05:59 -04:00
Thomas Harte
886946cc8c Rejigs time-until-event tracking. 2019-07-09 23:27:27 -04:00
Thomas Harte
ed4ddcfda8 Reduces call/return overhead on Microcycle methods. 2019-07-09 19:55:30 -04:00
Thomas Harte
7886cd63bd Flattens the Macintosh's perform_bus_operation, for legibility. 2019-07-09 19:49:06 -04:00
Thomas Harte
b4a3f66773 Restores just-in-time processing of video. 2019-07-09 18:08:07 -04:00
Thomas Harte
52e96e3d2a Documents and extends the Video interface. 
With the intention of returning it soon to JIT execution.
 2019-07-08 22:28:05 -04:00
Thomas Harte
1a9aa60bf7 Ensures no compiler will think this can exit without returning. 2019-07-08 18:13:23 -04:00
Thomas Harte
793c2df7ee Fixes keypad keys. 2019-07-08 16:38:06 -04:00