472 Commits

Author	SHA1	Message	Date
Thomas Harte	5c69728625	Introduced a memory fuzzer, and ensured the Oric uses it.	2016-10-19 21:31:50 -04:00
Thomas Harte	734b575d30	Ensured no attempt to write to pixel storage if none was available.	2016-10-19 21:17:27 -04:00
Thomas Harte	ca28e3c64e	Ensured the AY is pumped linearly, not exponentially.	2016-10-18 22:21:06 -04:00
Thomas Harte	9669a5ec9b	Switched to a more authentic interfacing to the AY.	2016-10-18 19:32:15 -04:00
Thomas Harte	988bbb5ab1	Ensured AY registers aren't rewritten just because of a synchronise event. A stall prior to figuring out proper bus logic, clearly.	2016-10-17 08:05:57 -04:00
Thomas Harte	1a57e89ff0	Altered phase so that it now merely accounts for accumulated error across a frame. Can probably do better.	2016-10-17 08:04:15 -04:00
Thomas Harte	61ad0f8bdc	Fixed inverse characters, added an extra per-frame phase change, based on empirical observation, ensured header guard won't become ambiguous.	2016-10-16 22:14:01 -04:00
Thomas Harte	a67afb7efa	Switched to a tight crop on the pixel part of the display.	2016-10-15 21:43:46 -04:00
Thomas Harte	a608bbebfb	Performed enough wiring to put the onus back onto OricTAP to do appropriate things.	2016-10-15 21:32:59 -04:00
Thomas Harte	6d7c3f6ac2	Factored out the now-sampling binary-level tape player from the Vic and connected it up to the Oric.	2016-10-15 21:21:18 -04:00
Thomas Harte	9730e8247f	Ensured propagation of synchronise messages, added enough to do plain tone. Probably. So: noise and envelopes missing. And it's all far too quiet.	2016-10-15 21:04:21 -04:00
Thomas Harte	51bdac27ae	Made some AY advances; it's now being polled for samples and collecting more information on what it needs to output.	2016-10-15 17:45:39 -04:00
Thomas Harte	da9c9ad51a	Added in the missing keys; added variable phase to the video.	2016-10-14 22:39:27 -04:00
Thomas Harte	288d10c253	Got some keyboard reaction.	2016-10-14 21:44:15 -04:00
Thomas Harte	3dbb602419	This seems to be a bit more likely.	2016-10-14 21:36:59 -04:00
Thomas Harte	138eabcff4	Continued in my effort to wire up a keyboard. Will need further to continue.	2016-10-14 21:35:15 -04:00
Thomas Harte	d8e4c488c2	Started iterating towards having an AY and a fully-working keyboard.	2016-10-14 21:18:03 -04:00
Thomas Harte	8867ad647c	Made an attempt at implementing the loopbacks necessary for diagnostics.	2016-10-13 21:47:12 -04:00
Thomas Harte	41e7eff6c8	Added a VIA. Now it's time to find out how poor my 6522 emulation is.	2016-10-13 20:50:55 -04:00
Thomas Harte	c9962f6502	Made an almost complete implementation of video. Just one row of the diagnostics cartridge seems to be off, showing thw wrong character set.	2016-10-13 19:34:29 -04:00
Thomas Harte	69920a4979	Made some basic first attempt at parsing video attributes; ensured lowest byte of ROM is readable.	2016-10-13 07:59:11 -04:00
Thomas Harte	ae48ad1bb4	Meaningful text! Albeit with the initial 'O' of 'Oric' missing. I guess control codes and NMIs next?	2016-10-12 22:03:54 -04:00
Thomas Harte	120b2d9e33	Switched to using a diagnostic ROM for now, as it'll definitely boot without initially requiring either a 6522 or AY. Have some forms appearing which imply I'm not doing badly, at least up to not knowing where I'm supposed to get character pixels from.	2016-10-12 21:52:47 -04:00
Thomas Harte	1f857c619b	Fixed timing issues. Static box of frame achieved!	2016-10-12 21:42:36 -04:00
Thomas Harte	304f0999cd	Made a faulty but hopefully creditable attempt to demarcate an Oric frame.	2016-10-12 21:29:21 -04:00
Thomas Harte	8c8a71107e	Added just enough wiring to add something that will generate the video, one day.	2016-10-12 19:20:23 -04:00
Thomas Harte	e6937d8003	Ensured that the ROM gets installed. So next for some video action?	2016-10-12 18:51:02 -04:00
Thomas Harte	4a062c616f	Added enough wiring to get Oric TAPs through to a completely unimplemented Oric emulation.	2016-10-11 22:20:13 -04:00
Thomas Harte	922dd6a586	Hit up the other two kinds of audio generator.	2016-10-07 17:10:00 -04:00
Thomas Harte	de658b70d7	That's thread safety, subject to the async task queue being made to work...	2016-10-07 17:02:36 -04:00
Thomas Harte	2d26feb073	Added mappings for the previously-missing characters @, [ and ].	2016-10-04 22:03:53 -04:00
Thomas Harte	f9ee6803df	It's likely this should be set at startup too, based on latest info.	2016-10-03 22:16:10 -04:00
Thomas Harte	97304e22f0	Adjusted per tests on StarDot; it appears the tape interrupts may fire during audio output, as if in tape output mode.	2016-10-03 20:03:14 -04:00
Thomas Harte	dae6b45464	Ensured the always-on bit of the interrupt status register is indeed on.	2016-10-03 19:15:31 -04:00
Thomas Harte	cd1ab09701	The Vic-20 now inserts ROMs again.	2016-09-29 20:15:25 -04:00
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	4db086949a	Made an attempt to add MFM decoding to the 1770; ensured something is returned when reading the Plus 3 status register again.	2016-09-25 21:38:52 -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	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	ce4100e5b9	Fixed slots for DFS and ADFS to sideways RAM; continued working on the 1770 to get as far as trying to get the body of a sector.	2016-09-24 22:04:54 -04:00
Thomas Harte	8db0030068	Fixed ROM loading by the Electron, turned the WD1770 into a 'disk drive' (it'll do for now), persuaded it to get all the way through a very specifically convenient type 1 command.	2016-09-20 22:14:33 -04:00
Thomas Harte	3b97b038b9	Corrected and sketched out state machine far enough to get to a complaint about unhandled work.	2016-09-20 15:56:31 -04:00
Thomas Harte	e358057440	Added a WD1770 run_for_cycles call. So I really can now move that as far as reporting that it has no disk?	2016-09-20 07:42:17 -04:00
Thomas Harte	cd5939501f	Treading water some more, ensured the DFS and ADFS ROMs get to the Electron. It now even inserts the DFS ROM if it has a DFS disk image. Might need to make it a sideways RAM though? Regardless, the next job surely — surely! — has to be to stop avoiding the 1770?	2016-09-20 07:36:57 -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	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	142254a478	Resolved failure to open disks that arrive through analysis.	2016-09-17 18:11:58 -04:00
Thomas Harte	ee8510984f	Added just enough wiring to restore the 2600 to functionality.	2016-09-15 19:34:45 -04:00