85 Commits

Author	SHA1	Message	Date
Thomas Harte	f8c11bf217	Rejig to ensure SAA output ends.	2025-09-25 21:31:21 -04:00
Thomas Harte	0214a77cd7	Add TODO.	2025-09-25 13:10:52 -04:00
Thomas Harte	425ed658f1	Support colour control codes, clarify SAA5050 signalling.	2025-09-25 13:03:55 -04:00
Thomas Harte	a53adb561e	Erase TODO, continue to update state without target.	2025-09-25 09:25:46 -04:00
Thomas Harte	ebc04c6520	Eliminate warning.	2025-09-24 22:58:50 -04:00
Thomas Harte	8b0e8f5b13	Move all work [near] definitively into the SAA5050.	2025-09-24 22:55:49 -04:00
Thomas Harte	16132a007e	Remove silly call.	2025-09-24 22:26:37 -04:00
Thomas Harte	b6e41ceea7	Hack in low-resolution Mode 7.	2025-09-24 22:25:43 -04:00
Thomas Harte	2e49bc2044	Add teletext pixel route, albeit without proper selection.	2025-09-24 20:33:07 -04:00
Thomas Harte	174c8dafbf	Resolve potential out-of-phase line counter.	2025-09-24 17:26:40 -04:00
Thomas Harte	90a96293de	Implement interlace-dependent row addressing.	2025-09-24 17:20:04 -04:00
Thomas Harte	ca6359a597	Reintroduce pixels, proving myself to be off-by-one.	2025-09-24 14:29:25 -04:00
Thomas Harte	f34ec03ff0	Attempt to fix off-by-one; adopt fixed pixel pattern.	2025-09-24 13:42:17 -04:00
Thomas Harte	1363be59b7	Formalise field size.	2025-09-24 11:17:47 -04:00
Thomas Harte	539b0e49d4	Start in mode 7, reallow interlaced modes.	2025-09-23 14:45:32 -04:00
Thomas Harte	3f6b3a4fa0	Don't allow a state to be permanently accumulated.	2025-09-23 14:41:59 -04:00
Thomas Harte	a199b64aa0	Clarify naming, attempt better to conform to FPGA precedent.	2025-09-23 14:27:21 -04:00
Thomas Harte	ed4f299d55	Start formalising types.	2025-09-22 13:09:30 -04:00
Thomas Harte	557631f6ba	Support ADFS, sideways RAM.	2025-09-20 22:33:08 -04:00
Thomas Harte	fb5ef200fb	Correct uPD7002 interrupt wiring.	2025-09-20 21:51:19 -04:00
Thomas Harte	40747f51bd	Disable ADC interrupt, experimentally.	2025-09-20 17:41:22 -04:00
Thomas Harte	503e974375	Restrict cursor to visible area, fix width.	2025-09-20 08:15:02 -04:00
Thomas Harte	c959f2fee5	Attempt to show the hardware cursor.	2025-09-20 07:54:37 -04:00
Thomas Harte	2720bcdf18	Retrench to static inline const.	2025-09-19 23:40:30 -04:00
Thomas Harte	57a795df96	Add keyboard LEDs.	2025-09-19 23:34:51 -04:00
Thomas Harte	6bdd9e4543	Add drive activity indicators.	2025-09-19 23:26:50 -04:00
Thomas Harte	ff0ba7d48b	Reduce logging again.	2025-09-19 22:59:58 -04:00
Thomas Harte	3916ba1a42	This intermittently succeeds. Doubling down on investigation.	2025-09-19 20:33:02 -04:00
Thomas Harte	0b3d22b97c	Take a swing and a miss at alternative documentation interpretations.	2025-09-19 19:59:12 -04:00
Thomas Harte	9b8b0f2023	Attempt to introduce a DFS ROM and WD1770.	2025-09-19 10:38:22 -04:00
Thomas Harte	239c485f3c	An underclock will do.	2025-09-18 21:35:08 -04:00
Thomas Harte	5e5fdda0ca	Correct audio.	2025-09-18 21:33:25 -04:00
Thomas Harte	4b2dddf3c6	Remove stale TODO.	2025-09-18 21:21:51 -04:00
Thomas Harte	c99ec745ca	Remove dead logging.	2025-09-18 21:20:27 -04:00
Thomas Harte	1ec2e455ec	Support flash, mixed modes.	2025-09-18 21:19:33 -04:00
Thomas Harte	69304737c6	Switch red and blue.	2025-09-18 17:53:58 -04:00
Thomas Harte	fe91670127	Pull count outside loop, simplify state machine.	2025-09-18 17:50:46 -04:00
Thomas Harte	7a59f94f3d	Install more realistic pixel pipeline.	2025-09-18 17:46:09 -04:00
Thomas Harte	4c49ffe3d1	Attmept full ADC implementation.	2025-09-18 12:21:25 -04:00
Thomas Harte	26b1ef247b	Add calls to ADB.	2025-09-17 23:11:48 -04:00
Thomas Harte	3aafba707a	Use more efficient means for blank lines.	2025-09-17 22:33:59 -04:00
Thomas Harte	ff56dd53cf	Remove dead code.	2025-09-17 21:42:33 -04:00
Thomas Harte	888148d282	Reduce chatter.	2025-09-17 21:35:34 -04:00
Thomas Harte	7bba0b82ef	Correct video address generation.	2025-09-17 21:26:13 -04:00
Thomas Harte	a99ed0e557	Add break key.	2025-09-17 17:26:28 -04:00
Thomas Harte	654981fb03	Clean up.	2025-09-17 17:24:08 -04:00
Thomas Harte	25b15fcdd1	Switch to map-based mapping.	2025-09-17 11:34:55 -04:00
Thomas Harte	1106fbb5ef	Implement circular scan.	2025-09-17 10:44:53 -04:00
Thomas Harte	b3c057f911	Increase logging, play about more.	2025-09-16 23:14:05 -04:00
Thomas Harte	1c33e9ead9	Attempt row scanning.	2025-09-16 23:03:25 -04:00