687 Commits

Author	SHA1	Message	Date
Thomas Harte	fb6da1de4a	Reduces logging temporarily.	2019-07-08 17:37:15 -04:00
Thomas Harte	245e27c893	Solidifies belief that the shift register bit is cleared on read/write.	2019-07-08 16:45:15 -04:00
Thomas Harte	28de629c08	Fixes the 6522 sufficiently to fix keyboard input.	2019-07-08 15:29:34 -04:00
Thomas Harte	210bcaa56d	Introduces an initial shift unit test, and makes it pass.	2019-07-07 22:13:36 -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	b9c2c42bc0	Switches drives to using floats for time counting. ... Hopefully to eliminate a lot of unnecessary `Time` work; inaccuracies should still be within tolerable range.	2019-07-02 15:43:03 -04:00
Thomas Harte	6c588a1510	Makes some further random swings at tracking the startup procedure.	2019-06-28 13:03:47 -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	cc7226ae9f	Starts trying to get a bit more rigorous about collected meanings.	2019-06-13 22:48:10 -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	535747e3f2	Restores single-line logging format.	2019-06-13 13:35:03 -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
Thomas Harte	ad8b68c998	Switches to a proper form of zero-upon-read data. ... Not that it's necessarily correct.	2019-06-11 19:53:51 -04:00
Thomas Harte	3c075e9542	Switches drives 0 and 1.	2019-06-10 14:58:39 -04:00
Thomas Harte	9230969f43	Corrects enough of the 6522 and Keyboard to get an initial command seemingly working.	2019-06-10 09:28:27 -04:00
Thomas Harte	0e16c67805	Improves shift register connection, towards having the keyboard function properly. ... It now seems not to receive a command terminator, but is at least getting a command.	2019-06-08 23:04:55 -04:00
Thomas Harte	697e094a4e	Sketches out the absolute basics of an SCC interface.	2019-06-08 18:47:11 -04:00
Thomas Harte	50d37798a2	Eradicates magic constants.	2019-06-06 21:37:43 -04:00
Thomas Harte	e9d0676e75	Fiddles further with the tachometer.	2019-06-06 21:36:19 -04:00
Thomas Harte	7591906777	Numerous IWM fixes: the machine now seems to be trying to measure the tachometer.	2019-06-06 18:32:11 -04:00
Thomas Harte	a413ae11cb	Makes some sort of first attempt at having the IWM read.	2019-06-04 22:13:00 -04:00
Thomas Harte	b8a1553368	Adds putative support for PlusToo-style BIN files. ... Albeit a bit of a guess, since it's not intended to be an emulator file format.	2019-06-04 21:41:09 -04:00
Thomas Harte	8557558bd8	Mildly improves investigatory reporting.	2019-06-03 21:51:45 -04:00
Thomas Harte	abe55fe950	Adds Timer 1 toggling of PB7.	2019-06-03 15:39:20 -04:00
Thomas Harte	da2b190288	Stores expected bit length.	2019-06-01 19:08:29 -04:00
Thomas Harte	48d837c636	Attempts to respond more sensibly to various queries. ... Including adding a 1-second delay on motor off.	2019-06-01 18:43:47 -04:00
Thomas Harte	723137c0d4	With some time additions to the 6522, starts wiring in Macintosh audio. ... The audio buffer is also the disk motor buffer, so this is preparatory to further disk work.	2019-06-01 14:39:40 -04:00
Thomas Harte	4197c6f149	Attempts to make some further semantic sense of the various IWM controls.	2019-05-30 22:17:49 -04:00
Thomas Harte	4632be4fe5	Wires up the final IWM signal, SEL, preparatory to an implementation.	2019-05-30 12:08:00 -04:00
Thomas Harte	8293b18278	Adds a TODO on what I think might be an incorrect implementation?	2019-05-08 15:06:40 -04:00
Thomas Harte	2ba0364850	Adds the shift register interrupt.	2019-05-08 15:02:07 -04:00
Thomas Harte	2e7bc0b98a	Attempts the shift register.	2019-05-08 14:54:40 -04:00
Thomas Harte	8278809383	Attempts to get more rigorous on communicating outward control line changes.	2019-05-08 13:33:22 -04:00
Thomas Harte	4367459cf2	Takes a first go at handshake and pulse modes.	2019-05-08 12:48:29 -04:00
Thomas Harte	254132b83d	Eliminates 6522Base in pursuit of working handshake modes. ... Specifically: this means that the places from which the BusHandler may be called are more numerous.	2019-05-08 12:35:17 -04:00
Thomas Harte	7e6d4f5a3e	Adds emulation of the real-time clock.	2019-05-08 00:12:19 -04:00
Thomas Harte	ce099a297a	Eliminates RAM writes in ROM area. ... I no longer think that logic is correct.	2019-05-07 17:16:22 -04:00
Thomas Harte	96facc103a	Adds an IWM shim and corrects graphics output. ... ... now that there is some.	2019-05-05 21:55:34 -04:00
Thomas Harte	62a1d69cee	Implements proper AY IO output behaviour.	2019-03-05 20:20:26 -05:00
Thomas Harte	d97348dd38	Eliminates dangling uses of printf.	2019-03-02 18:07:05 -05:00
Thomas Harte	7030abca97	Corrects PAL colours for the Vic-20.	2019-02-25 19:28:52 -05:00
Thomas Harte	e5addb27ec	Corrects log output.	2019-02-18 20:49:01 -05:00
Thomas Harte	2ef6d4327c	Resolves further build warnings.	2019-01-13 20:37:50 -05:00
Thomas Harte	248a8efd2f	Corrects declared pixel clock GCD.	2019-01-06 16:32:13 -05:00
Thomas Harte	601961deeb	Wires through set_display_type.	2018-11-29 20:44:21 -08:00
Thomas Harte	64465f97b6	Starts towards reintroducing the proper mechanisms for selecting a display type at runtime.	2018-11-28 17:53:33 -08:00
Thomas Harte	5618288459	Reduces visible area, producing a tighter crop.	2018-11-25 22:32:12 -05:00