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142 Commits

Author SHA1 Message Date
Thomas Harte
ca08716c52 Introduces real hard disk images to the nascent world of SCSI. 2019-08-25 17:03:41 -04:00
Thomas Harte
f668e4a54c Makes an attempt at getting the 5380 past arbitration. 
Not entirely successful. Also gets a bit smarter with `final` on ClockingHint::Sources.
 2019-08-15 23:14:40 -04:00
Thomas Harte
0f67e490e8 Adjusts NCR address decoding to produce a more plausible initial interaction. 2019-08-11 22:43:25 -04:00
Thomas Harte
895c315fa5 Increases the Mac Plus too 4mb. 2019-08-11 21:41:12 -04:00
Thomas Harte
a90a74a512 Stubs in just enough of the 5380 to get a Mac Plus too boot. 2019-08-11 20:55:20 -04:00
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
74c18d7861 Attempts a full wiring up of 400kb drive speed. 2019-07-30 15:08:55 -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
2432151bf8 Puts machine name into ROMMachine::ROM. 
Also switches to idiomatic exit codes.
 2019-07-22 21:14:21 -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
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
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
1a9aa60bf7 Ensures no compiler will think this can exit without returning. 2019-07-08 18:13:23 -04:00
Thomas Harte
28de629c08 Fixes the 6522 sufficiently to fix keyboard input. 2019-07-08 15:29:34 -04:00
Thomas Harte
d7329c1bdd Experiments with a timeout on keyboard interactions. 2019-07-07 14:13:55 -04:00
Thomas Harte
96c0253ee2 Fixes mouse input when a button is pressed; attempts keyboard input. 
I think the VIA is somehow sending spurious commands.
 2019-07-02 21:14:33 -04:00
Thomas Harte
191a7a9386 Reintroduces an empty second drive. 
This prevents the uninitialised disk error. Which is a clue.
 2019-07-02 16:59:00 -04:00
Thomas Harte
fffe6ed2df Chops the Macintosh down to a single drive to aid in development. 2019-07-02 13:59:30 -04:00
Thomas Harte
d81053ea38 Invents some additional PEA tests, and further fixes PEA. 2019-06-27 17:59:03 -04:00
Thomas Harte
506276a2bd Corrected: use format tag as intended. 2019-06-18 14:04:28 -04:00
Thomas Harte
00c32e4b59 Further miscellaneous changes to debug logging. All temporary. 2019-06-18 10:34:31 -04:00
Thomas Harte
877b46d2c1 Advances IWM/drive emulation very close to the point of 'Welcome to Macintosh'. 2019-06-15 16:08:54 -04:00
Thomas Harte
bde975a3b9 Possibly mights the tiniest bit of headway with 'the IWM'. 
I'm now pretty sure that my 3.5" drive, which for now is implemented in the IWM (yuck) is just responding to queries incorrectly.
 2019-06-13 22:38:09 -04:00
Thomas Harte
f6f9024631 Corrects Macintosh aspect ratio (and framing). 2019-06-13 18:41:38 -04:00
Thomas Harte
5630141ad7 Ensures randomised memory contents at startup. 2019-06-13 13:35:16 -04:00
Thomas Harte
d6150645c0 By hook or by crook, mouse input now works. 2019-06-12 22:19:25 -04:00
Thomas Harte
ccd2cb44a2 Fills in enough of the SCC to allow completion of the Macintosh side of that relationship. 2019-06-12 17:51:50 -04:00