100 Commits

Author	SHA1	Message	Date
Thomas Harte	2ff157cf7a	Switched CRTMachine over to use Cycles as an explicit statement of units, and followed through on the effects of that.	2017-07-22 22:17:29 -04:00
Thomas Harte	83628b285b	Experimentally turned the 6502 into a clock receiver. No problem encountered.	2017-07-22 21:52:21 -04:00
Thomas Harte	3f609e17b3	Factored out the table-lookup approach to being a typer, and adjusted so as definitely to limit myself to positive offset table lookups.	2017-07-21 21:18:51 -04:00
Thomas Harte	52d9ddf9e5	Gave the binary tape player a more logical assignment of wave level to output level. Which miraculously appears to have been the issue with the ZX80/81 tape loading — the inconsistency of silences seems to have been the issue.	2017-06-21 22:13:24 -04:00
Thomas Harte	2562306802	Merge branch 'master' into Z80	2017-05-16 21:05:00 -04:00
Thomas Harte	a5075d9eb5	Formalised the reasoning behind the colour phase fix-up and made it an opt-in per-caller value. Only the Oric currently needs to opt in.	2017-05-16 20:31:39 -04:00
Thomas Harte	eb8a2de5d6	Settled definitively on flush as more communicative than synchronise (and slightly more locale neutral); culled some more duplication from the Z80.	2017-05-15 07:38:59 -04:00
Thomas Harte	0808e9b6fb	Pulled the 6502 into a CPU namespace, making it an instance of something that has micro-opcodes and schedules them, and factoring out the formulation of a register pair.	2017-05-14 22:08:15 -04:00
Thomas Harte	e01f3f06c8	Completed curly bracket movement.	2017-03-26 14:34:47 -04:00
Thomas Harte	90151e2094	Fixed to ensure a known initial control register value, which has taken effect.	2016-12-28 18:49:32 -05:00
Thomas Harte	a568172758	Made steps towards proper CRC generation. Am currently comparing against Oric disk images, as — amongst other things — they include precomputed CRCs.	2016-12-28 18:29:37 -05:00
Thomas Harte	e62be03673	Removed endianness assumption.	2016-12-10 19:10:33 -05:00
Thomas Harte	a5683dfb21	Removed now untrue comment.	2016-12-10 15:19:48 -05:00
Thomas Harte	0e71802b92	Reduced Oric video to single nibble constants. Removed attempt at asynchronous flush as no longer required.	2016-12-10 14:17:46 -05:00
Thomas Harte	580f347727	Fixed Oric SCART mode by having it change what it's giving to the CRT based on which shader it knows will be active.	2016-12-10 13:55:56 -05:00
Thomas Harte	a549fd1ecc	Introduced the ability simply to piggy-back off the CRT's natural phase for the colour burst, thereby eliminating a couple of redundant independent attempts in the Oric and Electron.	2016-12-10 13:42:34 -05:00
Thomas Harte	6cdd41e5a9	Added direct use of the colour ROM, uploading 16 bits per pixel to contain the entire ROM composite wave.	2016-12-09 22:17:10 -05:00
Thomas Harte	3b5962b171	This is an initial attempt at using the actual Oric colour ROM values for composite video generation.	2016-12-09 20:01:27 -05:00
Thomas Harte	c304db0f5a	Deintegrated the busy flag and the interrupt request line, as the latter is reset by status reads. Which also means I can start reporting the WD INTRQ line status directly from the Microdisc. That appears to be correct, rather than honouring the Microdisc IRQ select there.	2016-12-06 21:16:29 -05:00
Thomas Harte	2003b514aa	Switched the typer to postfix underscores.	2016-12-03 10:55:50 -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	442986ee2c	Introduced a head loading path for 1793 machines.	2016-12-01 20:12:22 -05:00
Thomas Harte	82899f2f47	Ensured flag setting is atomic, removed duplication of interrupt request versus busy, found better names for the personality testers, unified delegate protocol.	2016-12-01 07:41:52 -05:00
Thomas Harte	9b6c5e814a	Now that it can be more explicit, this should admit that it's '93-based, not '73.	2016-11-28 16:22:35 -05:00
Thomas Harte	2f459690d4	It would appear the 1770 and 1773 actually differ in relation to the (non-sensical) ability not to spin-up for a Type 2, and whether a side compare can occur. So the WD1770 class now requires a personality to be specified. Which it singly fails to honour.	2016-11-26 23:29:30 +08:00
Thomas Harte	e9d6566e9c	Of course, changing the IRQ enable may immediately change the IRQ line. Signal if so.	2016-11-26 09:35:44 +08:00
Thomas Harte	73d30b9c00	Corrected typo.	2016-11-25 21:30:45 +08:00
Thomas Harte	12956901d6	Filled in some register mirrors.	2016-11-25 21:28:11 +08:00
Thomas Harte	54246c8f1a	Interrupt enabling works the other way around I think, and both registers with only one bit defined should probably return '1' in all other places?	2016-11-25 21:24:59 +08:00
Thomas Harte	8be81f6ebd	Supplied disks are given to the Microdisc.	2016-11-25 20:53:38 +08:00
Thomas Harte	4af678d2ed	Gave the Microdisc a clock signal, added just enough of force interrupt to avoid a spurious belief that a type 3 command has started.	2016-11-25 20:51:39 +08:00
Thomas Harte	5c019ad1c0	Okay, so it looks like both ROM paging flags are the opposite of what I previously had.	2016-11-25 20:42:40 +08:00
Thomas Harte	5be45c6c50	Ensured proper default behaviour.	2016-11-25 20:30:27 +08:00
Thomas Harte	d33f3b9224	This is the broad strokes effort at enabling Microdisc emulation.	2016-11-25 20:15:48 +08:00
Thomas Harte	7c2d9f3752	This seems to be right, per http://wiki.defence-force.org/doku.php?id=oric:hardware:floppy_disk_controller_wd1793	2016-11-22 22:35:43 +08:00
Thomas Harte	5ebc1c63ff	Switched video to postfix underscores, for consistency.	2016-11-22 22:28:45 +08:00
Thomas Harte	707763f80b	Added Microdisc storage to the Oric class, switching all instance storage to postfix underscore while I'm here.	2016-11-22 22:22:00 +08:00
Thomas Harte	0c3644f350	Made a second parse at logic. We'll see.	2016-11-22 22:12:32 +08:00
Thomas Harte	03843bf934	Unified delegates. Let's keep it easy for the caller.	2016-11-22 22:11:11 +08:00
Thomas Harte	13a608a8c2	Added what may be correct paging logic.	2016-11-22 22:09:52 +08:00
Thomas Harte	363db695e8	Started implementation of the Microdisc selection logic.	2016-11-22 08:12:53 +08:00
Thomas Harte	ea33a28695	Any Oric-format disks that are inserted now make it all the way to the Oric, along with a request to emulate the Microdisc. It has received a copy of the ROM. The ball is entirely in its court now.	2016-11-21 20:59:25 +08:00
Thomas Harte	8b40ae03ca	Extended analysis to spot IRQ and NMI vector changes, for titles that simply adjust those then exit. Ensured Oric emulator can type and load quickly on an Oric 1 just as well as on an Atmos.	2016-11-15 11:05:53 +08:00
Thomas Harte	e2cdfae8a7	The emulated Oric now has access to both versions of the BASIC ROM and picks between them based on the static analyser's recommendation.	2016-11-15 10:39:16 +08:00
Thomas Harte	9c550c594a	Moved audio work back into its own thread, but this time it queues up an all happens only upon a flush. Hopefully to resolve synchronisation cost concerns.	2016-11-09 21:17:50 -05:00
Thomas Harte	64827931bf	Switched the Oric implementation simply to rely upon the Storage-level tape parser. So now there's only one, authoritative one of those.	2016-11-07 21:57:58 -05:00
Thomas Harte	45b169f341	Made a few mapping fixes, clarified where the default reset code lives, ensured the Oric and Vic clear their keys when the typer ends.	2016-11-05 15:28:03 -04:00
Thomas Harte	338904fffe	Made similar cleanings of the Electron and Vic.	2016-11-05 15:07:57 -04:00
Thomas Harte	9fb9d92437	Made the typer much more able to help out, and thereby tidied and separated the Oric's typer.	2016-11-05 14:47:09 -04:00