40 Commits

Author	SHA1	Message	Date
Thomas Harte	79412dc84d	Upped MFM clock cycles, switched back to using the typer for the ADFS and adjusted ADFS ROM slots.	2016-09-28 21:28:34 -04:00
Thomas Harte	572d5587d9	Made a first stab at enabling multi-disk machines and thereby obeying (some of) the Plus 3's status register.	2016-09-25 21:24:16 -04:00
Thomas Harte	9bbcbd1001	Renamed class, intending to turn a Disk::Drive into literally just that, and have a thing with a PLL that consumes events be a Controller.	2016-09-25 20:05:56 -04:00
Thomas Harte	7f4c78139c	Attempted to ensure that ADFS disks get to an appropriately-configured Electron. Not immediately sure why the shift press isn't working; doesn't need to be dealt with immediately.	2016-09-25 19:59:46 -04:00
Thomas Harte	523dbb9678	This'll do for getting the ADF into the machine.	2016-09-25 18:32:26 -04:00
Thomas Harte	de863719d0	Made a first attempt at Acorn ADFS support plus the start of a suitable analyser.	2016-09-25 17:46:11 -04:00
Thomas Harte	6084020ab3	Added shift-break as a better way to boot suitable disks. Continued attempting to clean the 1770.	2016-09-25 14:11:22 -04:00
Thomas Harte	67b54269c9	Added typer support for loading from DFS. It'll do for now.	2016-09-24 22:52:49 -04:00
Thomas Harte	a9e65e9b7a	Tweaked disk side density, added call-outs to a WD1770 if the Electron had one (albeit without run_for_cycles yet as I need to figure out the clock rate), added a shell of the basic functions of the WD1770. No implementation yet.	2016-09-19 22:06:56 -04:00
Thomas Harte	c9dd07cecd	DFS disks are now delivered right up to the emulator's front door. So everything's in place to get started on that WD1770 nonsense.	2016-09-19 08:29:23 -04:00
Thomas Harte	e025768604	Two passes of the index hole => no sector found.	2016-09-19 08:17:07 -04:00
Thomas Harte	64f2538b1f	Added CRC checking to DFS comprehension; fixed a bunch of places where I'd used Objective-C's #import rather than #include.	2016-09-19 08:16:06 -04:00
Thomas Harte	c58cdbf151	Minor tweak to support zero-length files.	2016-09-19 07:37:11 -04:00
Thomas Harte	ca4df5dd61	Introduced a full container for disk catalogues, so as also to capture non-file information, and 'completed' (i.e. albeit that CRC checking is still absent) DFS catalogue decoding.	2016-09-19 07:35:02 -04:00
Thomas Harte	231f3dd0f4	This is exactly as far as I'm going to get with DFS parsing today, I think.	2016-09-18 22:18:01 -04:00
Thomas Harte	b1e7f2dfd0	There's no cache and no CRC checking yet, but this is probably a rough outline of an FM parser.	2016-09-18 22:03:06 -04:00
Thomas Harte	0ce901bd48	Added necessary wiring to get as far as asking an arm of the analyser to check out an Acorn disk image.	2016-09-18 21:18:11 -04:00
Thomas Harte	5ebca62bba	Now the CRC is a factoring out.	2016-09-18 18:35:50 -04:00
Thomas Harte	92af19098c	Improved file naming.	2016-09-15 19:24:59 -04:00
Thomas Harte	27fedaf892	The error flag is no longer directly exposed. I also tweaked the Commodore import numbers just a touch. But I think I need proper calibration.	2016-09-08 21:09:05 -04:00
Thomas Harte	556b77f2fd	Added some TODOs, re-enabled master Acorn decision.	2016-09-07 07:39:47 -04:00
Thomas Harte	149cbb327b	Made something of a first attempt at a parser. Which is failing terribly.	2016-09-06 06:59:51 -04:00
Thomas Harte	cfe8251166	Further documented interface, fixed a potential parsing blockage.	2016-09-05 22:12:52 -04:00
Thomas Harte	05c24222d8	Liberated the tape parser template.	2016-09-05 20:02:35 -04:00
Thomas Harte	463b74301d	Sought to reduce the amount of heap nonsense.	2016-09-05 19:59:58 -04:00
Thomas Harte	11850b872d	Sought to emulate 0111 as a longer 0110 to test a particular HQ UEF. Some progress. Not great.	2016-09-05 18:28:43 -04:00
Thomas Harte	6239297212	Fixed off-by-one error on filename lengths and order-of-operations mistake preventing data CRC from being checked.	2016-09-05 18:15:15 -04:00
Thomas Harte	e25fee2332	I'm going back to believing in this test.	2016-09-05 17:55:40 -04:00
Thomas Harte	68874b6080	Fixed accidental implicit assumption that Acorn files will be at least two blocks.	2016-09-05 17:53:57 -04:00
Thomas Harte	93f5b5303e	Factored out the stuff I expect to be common to this tape nonsense, started looking at the one currently-failing tape. More on the latter to do.	2016-09-05 17:17:52 -04:00
Thomas Harte	6f62803814	Resolved dropping of every other file.	2016-09-01 08:35:28 -04:00
Thomas Harte	21e5f407d8	I need to get a bit more definitive on naming but this gets all the way to setting a configuration upon an Electron.	2016-08-31 22:03:42 -04:00
Thomas Harte	9d7962d6c0	Closed the loop on Electron analysis for now. Including loading command detection.	2016-08-31 20:24:13 -04:00
Thomas Harte	d8c0da7ccb	I think this should lead to a full representation of files on an Acorn tape, but subject to is_at_end working.	2016-08-31 19:57:09 -04:00
Thomas Harte	7b5d5858ff	CRCs are just stored reversed. Of course. So this should be sufficient to load each chunk of an Acorn file.	2016-08-30 08:13:40 -04:00
Thomas Harte	b3521ed187	Started working towards capturing everything there is to know about a file. CRC calculation appears to be flawed somehow at the moment.	2016-08-30 07:38:08 -04:00
Thomas Harte	6218f05b8c	This loads the name. That'll do for now.	2016-08-29 22:05:06 -04:00
Thomas Harte	963a479908	Made a quick first attempt at getting a file name from Acorn tape, failing terribly but at least formalising tapes being able to signal their end.	2016-08-29 21:53:06 -04:00
Thomas Harte	0032ad2634	Edging ever onwards; killed forced attempt at uniformity in targets, sketched out the interface for a next-file-from call to Acorn tapes.	2016-08-29 21:10:38 -04:00
Thomas Harte	d1abfc040c	Addressed my dithering here: the file format containers themselves should do nothing but inspect the data to find out whether it is of the correct format. The machine steps are there for machine-specific validation. So it's probably easier to treat a binary ROM image just as a binary ROM image. Therefore, the Acorn-specific .rom detection is now in an Acorn-specific area.	2016-08-29 08:48:49 -04:00