25 Commits

Author	SHA1	Message	Date
Thomas Harte	742c5df367	With lots of logging arising temporarily, fixed bug whereby conversion to a patched track would lead to holding a track with a distinct measure of time, leading to improperly-placed patches.	2016-12-25 22:00:39 -05:00
Thomas Harte	a6d038cad9	Eliminated special case that doesn't seek properly and isn't needed. Added TODO.	2016-12-25 21:32:14 -05:00
Thomas Harte	acc35885cd	Attempted to reduce track invalidations.	2016-12-25 20:38:25 -05:00
Thomas Harte	1349e85d83	[Mostly] fixed track write-back.	2016-12-25 19:19:22 -05:00
Thomas Harte	007c13ec16	Fixed: cycles_per_bit_ isn't a function of the rotational multiplier, it's absolute. Also made sure that exactly hitting the end of a bit counts.	2016-12-25 16:35:39 -05:00
Thomas Harte	98be6ede45	Shuffled a little to reduce risk of overflow, ensured writing is a loop, still seem to be writing too quickly for some reason.	2016-12-25 16:13:05 -05:00
Thomas Harte	d2ad2c756e	Added enough shovelling to write rubbish for an entire sector.	2016-12-25 15:46:49 -05:00
Thomas Harte	ec55a25620	It makes sense to simplify these ahead of time.	2016-12-25 12:32:25 -05:00
Thomas Harte	aceb7e3b6b	Started implementing write sector on the 1770, immediately deciding it would be useful to have a callback for end-of-queued-data-written from disk controller. So had a go at implementing that, naively. More investigation required.	2016-12-25 12:31:38 -05:00
Thomas Harte	901f19f89c	Added enough stuff that SSDs attached to a 1770 will now reach the entry point for writing.	2016-12-25 09:46:12 -05:00
Thomas Harte	9d555c4a02	Let's try just declining to pump the PLL while in write mode. Added documentation to explain.	2016-12-25 09:19:18 -05:00
Thomas Harte	b57038edc5	Actually, at least index holes will still be receivable while writing, so this wasn't entirely correct. Probably best to leave it in.	2016-12-25 09:16:09 -05:00
Thomas Harte	af69b21033	This is almost complete, except that it doesn't act appropriately if some bits are written but not enough to cover the entire writing period.	2016-12-24 22:51:26 -05:00
Thomas Harte	7f303cfceb	Continued the baby steps.	2016-12-24 21:54:43 -05:00
Thomas Harte	afc6f4129c	Withdrew unused tally.	2016-12-24 21:47:57 -05:00
Thomas Harte	1e416d4af0	Withdrew now-unused and never-implemented API from TimedEventLoop, and the redundant track time count from DiskController.	2016-12-24 21:02:10 -05:00
Thomas Harte	bedea48d03	This is a much better way of dealing with being partway into an incoming event. Subject to eliminating overruns, of course.	2016-12-24 20:54:27 -05:00
Thomas Harte	4cb17143ef	Messing around trying to lock down timing precisely. Which includes formal initial conditions.	2016-12-24 15:18:46 -05:00
Thomas Harte	1e970a9772	Started stepping slowly towards allowing writing on the disk controller, taking the opportunity to introduce self-simplifying behaviour to Storage::Time.	2016-12-24 13:07:23 -05:00
Thomas Harte	0dc2aa6454	Commuted all of 'Storage' other than 'Tape' to postfix underscores.	2016-12-03 11:59:28 -05:00
Thomas Harte	81ee834530	As well as a bunch of logging, reinstated rotation position preservation across tracks.	2016-12-02 18:36:47 -05:00
Thomas Harte	93c573bfa9	Implemented missing status bits (other than the index hole), and a head loading delay for the Microdisc.	2016-12-01 21:13:16 -05:00
Thomas Harte	2222cb65d6	Split the status up into flags, assembled into a register upon demand. Attempted to implement some of the differences between the 1770/1772 and 1773/1793. Albeit with a motor fix still in place.	2016-11-30 22:26:02 -05:00
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